Calculators

Work out any percentage problem in seconds — with the formula shown.

Find the percentage increase between two numbers, and the new value after an increase.

Work out a percentage decrease, or reduce a value by a percentage.

Compare two values as a percentage of their average.

Calculate exact age in years, months and days — plus every useful breakdown.

Mean, median, mode, range and more for any list of numbers.

Simplify ratios, find equivalent ratios and solve for a missing value.

Add, subtract, multiply and divide fractions with step-by-step working.

A full scientific calculator with brackets, powers, roots, trig and logarithms.

Add or subtract hours and minutes, and convert time into decimals.

Add or subtract days, weeks, months or years from any date.

Count the exact number of days between any two dates.

Count working days between two dates, excluding weekends and holidays.

Turn a start time, end time and breaks into total hours worked.

Work out the fuel cost of a trip, and what it costs per person.

Calculate the area of any common shape.

Work out the volume and capacity of 3D shapes.

Find the missing side of a right-angled triangle.

Solve ax² + bx + c = 0 with the discriminant and roots shown.

Single events, combined events, unions, intersections and complements.

Mean, median, mode, quartiles, IQR, variance and standard deviation.

Sample or population standard deviation with full working.