All 264 VELNARO tools
Every tool we have built, grouped by category. Use the search box to jump straight to what you need — it finds tools by name, unit or the words you would search for.
Calculators
22 tools- Percentage CalculatorWork out any percentage problem in seconds — with the formula shown.
- Percentage Increase CalculatorFind the percentage increase between two numbers, and the new value after an increase.
- Percentage Decrease CalculatorWork out a percentage decrease, or reduce a value by a percentage.
- Percentage Difference CalculatorCompare two values as a percentage of their average.
- Age CalculatorCalculate exact age in years, months and days — plus every useful breakdown.
- Average CalculatorMean, median, mode, range and more for any list of numbers.
- Ratio CalculatorSimplify ratios, find equivalent ratios and solve for a missing value.
- Fraction CalculatorAdd, subtract, multiply and divide fractions with step-by-step working.
- Scientific CalculatorA full scientific calculator with brackets, powers, roots, trig and logarithms.
- Time CalculatorAdd or subtract hours and minutes, and convert time into decimals.
- Date CalculatorAdd or subtract days, weeks, months or years from any date.
- Days Between Dates CalculatorCount the exact number of days between any two dates.
- Business Days CalculatorCount working days between two dates, excluding weekends and holidays.
- Hours CalculatorTurn a start time, end time and breaks into total hours worked.
- Fuel Cost CalculatorWork out the fuel cost of a trip, and what it costs per person.
- Area CalculatorCalculate the area of any common shape.
- Volume CalculatorWork out the volume and capacity of 3D shapes.
- Pythagorean Theorem CalculatorFind the missing side of a right-angled triangle.
- Quadratic Equation CalculatorSolve ax² + bx + c = 0 with the discriminant and roots shown.
- Probability CalculatorSingle events, combined events, unions, intersections and complements.
- Statistics CalculatorMean, median, mode, quartiles, IQR, variance and standard deviation.
- Standard Deviation CalculatorSample or population standard deviation with full working.
Converters
115 tools- KG to LBS ConverterConvert kilograms to pounds instantly, with the formula and a conversion table.
- LBS to KG ConverterConvert pounds to kilograms instantly, with the formula and a conversion table.
- KG to Tons ConverterConvert kilograms to metric tons instantly, with the formula and a conversion table.
- Tons to KG ConverterConvert metric tons to kilograms instantly, with the formula and a conversion table.
- G to OZ ConverterConvert grams to ounces instantly, with the formula and a conversion table.
- OZ to G ConverterConvert ounces to grams instantly, with the formula and a conversion table.
- KG to Stone ConverterConvert kilograms to stones instantly, with the formula and a conversion table.
- Stone to KG ConverterConvert stones to kilograms instantly, with the formula and a conversion table.
- LBS to OZ ConverterConvert pounds to ounces instantly, with the formula and a conversion table.
- OZ to LBS ConverterConvert ounces to pounds instantly, with the formula and a conversion table.
- KG to G ConverterConvert kilograms to grams instantly, with the formula and a conversion table.
- G to KG ConverterConvert grams to kilograms instantly, with the formula and a conversion table.
- Meters to Feet ConverterConvert meters to foots instantly, with the formula and a conversion table.
- Feet to Meters ConverterConvert foots to meters instantly, with the formula and a conversion table.
- KM to Miles ConverterConvert kilometers to miles instantly, with the formula and a conversion table.
- Miles to KM ConverterConvert miles to kilometers instantly, with the formula and a conversion table.
- CM to Inches ConverterConvert centimeters to inchs instantly, with the formula and a conversion table.
- Inches to CM ConverterConvert inchs to centimeters instantly, with the formula and a conversion table.
- Meters to CM ConverterConvert meters to centimeters instantly, with the formula and a conversion table.
- CM to Meters ConverterConvert centimeters to meters instantly, with the formula and a conversion table.
- KM to Meters ConverterConvert kilometers to meters instantly, with the formula and a conversion table.
- Meters to KM ConverterConvert meters to kilometers instantly, with the formula and a conversion table.
- Miles to Feet ConverterConvert miles to foots instantly, with the formula and a conversion table.
- Feet to Inches ConverterConvert foots to inchs instantly, with the formula and a conversion table.
- Inches to Feet ConverterConvert inchs to foots instantly, with the formula and a conversion table.
- Yards to Meters ConverterConvert yards to meters instantly, with the formula and a conversion table.
- Meters to Yards ConverterConvert meters to yards instantly, with the formula and a conversion table.
- MM to Inches ConverterConvert millimeters to inchs instantly, with the formula and a conversion table.
- Inches to MM ConverterConvert inchs to millimeters instantly, with the formula and a conversion table.
- Celsius to Fahrenheit ConverterConvert celsius to fahrenheits instantly, with the formula and a conversion table.
- Fahrenheit to Celsius ConverterConvert fahrenheits to celsius instantly, with the formula and a conversion table.
- Celsius to Kelvin ConverterConvert celsius to kelvins instantly, with the formula and a conversion table.
- Kelvin to Celsius ConverterConvert kelvins to celsius instantly, with the formula and a conversion table.
- Fahrenheit to Kelvin ConverterConvert fahrenheits to kelvins instantly, with the formula and a conversion table.
- Liters to Gallons ConverterConvert liters to us gallons instantly, with the formula and a conversion table.
- Gallons to Liters ConverterConvert us gallons to liters instantly, with the formula and a conversion table.
- Liters to ML ConverterConvert liters to milliliters instantly, with the formula and a conversion table.
- ML to Liters ConverterConvert milliliters to liters instantly, with the formula and a conversion table.
- Gallons to Imperial Gallons ConverterConvert us gallons to imperial gallons instantly, with the formula and a conversion table.
- Liters to Cups ConverterConvert liters to us cups instantly, with the formula and a conversion table.
- ML to FL OZ ConverterConvert milliliters to us fluid ounces instantly, with the formula and a conversion table.
- Cubic Meters to Liters ConverterConvert cubic meters to liters instantly, with the formula and a conversion table.
- Liters to Cubic Meters ConverterConvert liters to cubic meters instantly, with the formula and a conversion table.
- Square Meters to Square Feet ConverterConvert square meters to square foots instantly, with the formula and a conversion table.
- Square Feet to Square Meters ConverterConvert square foots to square meters instantly, with the formula and a conversion table.
- Hectares to Acres ConverterConvert hectares to acres instantly, with the formula and a conversion table.
- Acres to Hectares ConverterConvert acres to hectares instantly, with the formula and a conversion table.
- Square KM to Square Miles ConverterConvert square kilometers to square miles instantly, with the formula and a conversion table.
- Square Miles to Square KM ConverterConvert square miles to square kilometers instantly, with the formula and a conversion table.
- Square CM to Square Inches ConverterConvert square centimeters to square inchs instantly, with the formula and a conversion table.
- MB to GB ConverterConvert megabyte (1000 kb)s to gigabyte (1000 mb)s instantly, with the formula and a conversion table.
- GB to MB ConverterConvert gigabyte (1000 mb)s to megabyte (1000 kb)s instantly, with the formula and a conversion table.
- Bytes to KB ConverterConvert bytes to kilobyte (1000 b)s instantly, with the formula and a conversion table.
- KB to MB ConverterConvert kilobyte (1000 b)s to megabyte (1000 kb)s instantly, with the formula and a conversion table.
- MB to KB ConverterConvert megabyte (1000 kb)s to kilobyte (1000 b)s instantly, with the formula and a conversion table.
- GB to TB ConverterConvert gigabyte (1000 mb)s to terabyte (1000 gb)s instantly, with the formula and a conversion table.
- TB to GB ConverterConvert terabyte (1000 gb)s to gigabyte (1000 mb)s instantly, with the formula and a conversion table.
- MBIT to MB ConverterConvert megabits to megabyte (1000 kb)s instantly, with the formula and a conversion table.
- KMH to MPH ConverterConvert kilometer per hours to mile per hours instantly, with the formula and a conversion table.
- MPH to KMH ConverterConvert mile per hours to kilometer per hours instantly, with the formula and a conversion table.
- MPS to KMH ConverterConvert meter per seconds to kilometer per hours instantly, with the formula and a conversion table.
- Knots to KMH ConverterConvert knots to kilometer per hours instantly, with the formula and a conversion table.
- KMH to MPS ConverterConvert kilometer per hours to meter per seconds instantly, with the formula and a conversion table.
- Hours to Minutes ConverterConvert hours to minutes instantly, with the formula and a conversion table.
- Minutes to Seconds ConverterConvert minutes to seconds instantly, with the formula and a conversion table.
- Days to Hours ConverterConvert days to hours instantly, with the formula and a conversion table.
- Weeks to Days ConverterConvert weeks to days instantly, with the formula and a conversion table.
- Years to Days ConverterConvert year (365 days)s to days instantly, with the formula and a conversion table.
- MS to Seconds ConverterConvert milliseconds to seconds instantly, with the formula and a conversion table.
- BAR to PSI ConverterConvert bars to pound per square inchs instantly, with the formula and a conversion table.
- PSI to BAR ConverterConvert pound per square inchs to bars instantly, with the formula and a conversion table.
- KPA to PSI ConverterConvert kilopascals to pound per square inchs instantly, with the formula and a conversion table.
- ATM to PA ConverterConvert standard atmospheres to pascals instantly, with the formula and a conversion table.
- KWH to MJ ConverterConvert kilowatt hours to megajoules instantly, with the formula and a conversion table.
- KJ to KCAL ConverterConvert kilojoules to kilocalorie (food)s instantly, with the formula and a conversion table.
- KCAL to KJ ConverterConvert kilocalorie (food)s to kilojoules instantly, with the formula and a conversion table.
- J to CAL ConverterConvert joules to calories instantly, with the formula and a conversion table.
- BTU to J ConverterConvert british thermal units to joules instantly, with the formula and a conversion table.
- KW to HP ConverterConvert kilowatts to mechanical horsepowers instantly, with the formula and a conversion table.
- HP to KW ConverterConvert mechanical horsepowers to kilowatts instantly, with the formula and a conversion table.
- W to KW ConverterConvert watts to kilowatts instantly, with the formula and a conversion table.
- L 100KM to MPG ConverterConvert liters per 100 kms to miles per gallon (us)s instantly, with the formula and a conversion table.
- MPG to L 100KM ConverterConvert miles per gallon (us)s to liters per 100 kms instantly, with the formula and a conversion table.
- KM L to MPG ConverterConvert kilometers per liters to miles per gallon (us)s instantly, with the formula and a conversion table.
- MPG to MPG UK ConverterConvert miles per gallon (us)s to miles per gallon (uk)s instantly, with the formula and a conversion table.
- MHZ to GHZ ConverterConvert megahertzs to gigahertzs instantly, with the formula and a conversion table.
- GHZ to MHZ ConverterConvert gigahertzs to megahertzs instantly, with the formula and a conversion table.
- HZ to KHZ ConverterConvert hertzs to kilohertzs instantly, with the formula and a conversion table.
- Degrees to Radians ConverterConvert degrees to radians instantly, with the formula and a conversion table.
- Radians to Degrees ConverterConvert radians to degrees instantly, with the formula and a conversion table.
- PX to REM ConverterConvert pixels to rem (16px base)s instantly, with the formula and a conversion table.
- REM to PX ConverterConvert rem (16px base)s to pixels instantly, with the formula and a conversion table.
- PT to PX ConverterConvert points to pixels instantly, with the formula and a conversion table.
- PX to PT ConverterConvert pixels to points instantly, with the formula and a conversion table.
- Cups to ML ConverterConvert cup (us)s to milliliters instantly, with the formula and a conversion table.
- TBSP to ML ConverterConvert tablespoon (us)s to milliliters instantly, with the formula and a conversion table.
- TSP to ML ConverterConvert teaspoon (us)s to milliliters instantly, with the formula and a conversion table.
- FL OZ to ML ConverterConvert fluid ounce (us)s to milliliters instantly, with the formula and a conversion table.
- Length ConverterConvert between every unit of length in one place.
- Weight & Mass ConverterConvert between every unit of weight & mass in one place.
- Temperature ConverterConvert between every unit of temperature in one place.
- Area ConverterConvert between every unit of area in one place.
- Volume ConverterConvert between every unit of volume in one place.
- Speed ConverterConvert between every unit of speed in one place.
- Time ConverterConvert between every unit of time in one place.
- Pressure ConverterConvert between every unit of pressure in one place.
- Energy ConverterConvert between every unit of energy in one place.
- Power ConverterConvert between every unit of power in one place.
- Data & Digital Storage ConverterConvert between every unit of data & digital storage in one place.
- Fuel Economy ConverterConvert between every unit of fuel economy in one place.
- Frequency ConverterConvert between every unit of frequency in one place.
- Angle ConverterConvert between every unit of angle in one place.
- Typography ConverterConvert between every unit of typography in one place.
- Cooking ConverterConvert between every unit of cooking in one place.
- Currency ConverterLive exchange rates for 160+ currencies, updated every 30 minutes.
Finance
23 tools- Mortgage CalculatorMonthly repayments, total interest and the full cost of a home loan.
- Loan CalculatorMonthly payment, total interest and amortisation for any loan.
- Compound Interest CalculatorSee how money grows when interest earns interest.
- Simple Interest CalculatorInterest calculated on the principal only.
- Investment CalculatorProject the future value of an investment with or without contributions.
- ROI CalculatorReturn on investment as a percentage and a cash amount.
- Savings CalculatorSee how regular saving adds up over time.
- Retirement CalculatorHow much you need, and what to save each month to get there.
- Debt Payoff CalculatorHow long to clear a debt, and how much interest you will pay.
- Credit Card Payoff CalculatorWhat paying only the minimum really costs.
- Inflation CalculatorWhat money in one year is worth in another.
- Salary CalculatorBreak an annual salary into monthly, weekly, daily and hourly pay.
- Hourly to Salary CalculatorConvert an hourly wage into annual, monthly and weekly pay.
- Overtime CalculatorWork out overtime pay at time-and-a-half, double time or any rate.
- Tax CalculatorEstimate income tax and take-home pay from your income and deduction rate.
- Sales Tax CalculatorAdd or remove sales tax from any price.
- Discount CalculatorWork out the sale price and how much you save.
- Tip CalculatorSplit a bill, add a tip and see what everyone owes.
- Profit Margin CalculatorGross profit, margin percentage and markup from cost and revenue.
- CAGR CalculatorCompound annual growth rate between a beginning and ending value.
- Net Worth CalculatorAdd up what you own and subtract what you owe.
- Emergency Fund CalculatorHow much you should set aside, and how long it will take.
- Savings Goal CalculatorWhen will you reach your savings target?
Business
19 tools- Profit CalculatorWork out gross profit, net profit and profit margin.
- Markup CalculatorSet a selling price from your cost and markup percentage.
- Break-Even CalculatorHow many units you must sell before you start making money.
- Revenue CalculatorProject revenue from units, price and growth rate.
- Commission CalculatorCalculate sales commission, including tiered and base-plus structures.
- VAT CalculatorAdd or remove VAT from any amount.
- Wholesale Price CalculatorSet a wholesale price that still leaves you a margin.
- Retail Price CalculatorPrice a product from cost, margin and any discount you plan to offer.
- Inventory CalculatorEOQ, reorder point, stock cover and inventory value.
- Employee Cost CalculatorThe true cost of employing someone, not just their salary.
- Payroll CalculatorWork out gross-to-net pay for a pay period.
- Cash Flow CalculatorSee whether more cash comes in than goes out.
- Gross Margin CalculatorGross profit and margin from revenue and cost of sales.
- Net Margin CalculatorWhat share of revenue survives every cost.
- Time Tracking CalculatorTotal tracked hours and their billable value.
- Customer Lifetime Value CalculatorWhat a customer is worth over their whole relationship with you.
- Invoice GeneratorCreate a clean, printable invoice in your browser.
- Quote GeneratorBuild a professional price quote for a client.
- Receipt GeneratorCreate a payment receipt with a reference and total.
Education
8 tools- GPA CalculatorWork out your grade point average on the 4.0 scale.
- Grade CalculatorWeighted average grade across assignments and exams.
- Final Grade CalculatorThe exam score you need to reach your target grade.
- Algebra CalculatorSolve linear equations and 2×2 systems of equations.
- Geometry CalculatorPerimeter, area, surface area, volume and diagonals of common shapes.
- Mean, Median & Mode CalculatorThe three averages, explained side by side.
- Study Time CalculatorPlan how to spread your study hours before an exam.
- Exam CountdownExactly how long is left before your exam.
Time & Date
10 tools- World ClockThe current time in major cities around the world.
- Time Zone ConverterConvert a time from one city to another instantly.
- Countdown TimerA live countdown to any date and time.
- StopwatchA precise online stopwatch with lap times.
- Pomodoro TimerFocus in 25-minute blocks with automatic breaks.
- Unix Timestamp ConverterConvert between Unix timestamps and readable dates.
- Week Number CalculatorFind the ISO week number for any date.
- Leap Year CalculatorIs it a leap year? And when is the next one?
- Working Hours CalculatorContracted working hours per week, month and year.
- Time Duration CalculatorThe exact duration between two dates and times.
Health & Fitness
11 tools- BMI CalculatorBody mass index with a clear interpretation of the result.
- BMR CalculatorBasal metabolic rate — the calories your body burns at rest.
- TDEE CalculatorTotal daily energy expenditure from your activity level.
- Calorie CalculatorDaily calorie targets for maintaining, losing or gaining weight.
- Body Fat CalculatorEstimate body fat percentage using the US Navy method.
- Ideal Weight CalculatorHealthy weight ranges from four standard formulas.
- Macro CalculatorSplit your calories into protein, fat and carbohydrate.
- Water Intake CalculatorA daily hydration target based on your body and activity.
- Running Pace CalculatorPace, finish time and splits for any distance.
- Pace & Speed ConverterConvert between min/km, min/mile, km/h and mph.
- Pregnancy Due Date CalculatorEstimated due date from your last period, conception or IVF transfer.
Writing & Text
16 tools- Word CounterCount words, characters, sentences, paragraphs and reading time.
- Character CounterCount characters with and without spaces, plus bytes and limits.
- Sentence CounterCount sentences and see their average length.
- Paragraph CounterCount paragraphs and see how evenly your text is structured.
- Line CounterCount lines, blank lines and non-empty lines.
- Reading Time CalculatorHow long will this text take to read?
- Case ConverterConvert text to upper, lower, title, sentence or camel case.
- Uppercase ConverterConvert any text to UPPERCASE instantly.
- Lowercase ConverterConvert any text to lowercase instantly.
- Title Case ConverterFormat headings and titles correctly.
- Remove Duplicate LinesDelete repeated lines from any list or text.
- Remove Extra SpacesClean up double spaces, tabs and blank lines.
- Text SorterSort lines alphabetically, numerically, by length or randomly.
- Text ReverserReverse text, words or the order of lines.
- Slug GeneratorTurn a title into a clean, SEO-friendly URL slug.
- Lorem Ipsum GeneratorGenerate filler text for layouts and mockups.
Technology
20 tools- QR Code GeneratorCreate a QR code for any text, URL or Wi-Fi network.
- UUID GeneratorGenerate RFC 4122 version 4 UUIDs.
- JSON FormatterFormat, validate and minify JSON with error reporting.
- JSON ValidatorCheck whether your JSON is valid, and find the error.
- JSON MinifierCompress JSON to the smallest possible single line.
- HTML FormatterBeautify and indent messy HTML.
- CSS FormatterBeautify minified CSS into readable rules.
- JavaScript FormatterRe-indent JavaScript and JSON-like code.
- Base64 EncoderEncode text or files into Base64.
- Base64 DecoderDecode Base64 back to readable text.
- URL EncoderPercent-encode text for safe use in a URL.
- URL DecoderDecode a percent-encoded URL into readable text.
- Color ConverterConvert between HEX, RGB, HSL, HSV and CMYK.
- HEX to RGB ConverterConvert a hex colour code to RGB, HSL and more.
- RGB to HEX ConverterConvert RGB values to a hex colour code.
- Regex TesterTest regular expressions with live match highlighting.
- Hash GeneratorGenerate MD5-style, SHA-1, SHA-256 and SHA-512 hashes of text.
- Markdown PreviewerWrite Markdown and see it rendered live.
- IP Information ToolSee the IP address and connection details your browser is using.
- User Agent ParserDecode your browser’s user-agent string.
Generators
14 tools- Password GeneratorCreate strong, random passwords — generated on your device.
- Passphrase GeneratorMemorable multi-word passphrases with real strength.
- Random Number GeneratorGenerate random numbers in any range.
- Random Name GeneratorGenerate random first names, last names or full names.
- Random Team GeneratorSplit any list of people into random teams.
- Random Decision GeneratorLet a cryptographically random choice decide.
- Random PickerPick one or more random winners from a list.
- Dice RollerRoll virtual dice — from a single d6 to a handful of d20s.
- Coin FlipFlip a virtual coin — heads or tails.
- Username GeneratorGenerate available-style usernames and handles.
- Business Name GeneratorGenerate business name ideas from your sector.
- Domain Name Ideas GeneratorBrainstorm domain names from your keywords.
- Random Color GeneratorGenerate random colours with hex, RGB and HSL values.
- List ShufflerRandomly shuffle any list of items.
Travel
6 tools- Travel Budget CalculatorPlan what a trip will cost per day, per person and in total.
- Trip Cost CalculatorThe running cost of a road trip or holiday.
- Distance CalculatorGreat-circle distance between two places.
- Travel Time CalculatorHow long will the journey take?
- Jet Lag CalculatorHow many time zones you cross, and how to adjust.
- Packing Checklist GeneratorA printable packing list tailored to your trip.
City clocks
32 cities- Time in LondonUnited Kingdom
- Time in New YorkUnited States
- Time in DubaiUnited Arab Emirates
- Time in LusakaZambia
- Time in JohannesburgSouth Africa
- Time in DhakaBangladesh
- Time in TokyoJapan
- Time in SingaporeSingapore
- Time in NairobiKenya
- Time in LagosNigeria
- Time in AccraGhana
- Time in HarareZimbabwe
- Time in Dar es SalaamTanzania
- Time in GaboroneBotswana
- Time in CairoEgypt
- Time in DelhiIndia
- Time in KarachiPakistan
- Time in BeijingChina
- Time in SydneyAustralia
- Time in ParisFrance
- Time in BerlinGermany
- Time in MadridSpain
- Time in LisbonPortugal
- Time in TorontoCanada
- Time in Los AngelesUnited States
- Time in São PauloBrazil
- Time in RiyadhSaudi Arabia
- Time in IstanbulTürkiye
- Time in MoscowRussia
- Time in JakartaIndonesia
- Time in SeoulSouth Korea
- Time in Mexico CityMexico