Inventory Calculator
Enter your demand, order cost and holding cost to calculate the economic order quantity (EOQ), the reorder point and how long your current stock will last.
Economic order quantity (EOQ)
465 units
Reorder point
461 units
Orders per year
25.82
Days of stock remaining
24 days
Inventory value on hand
$20,000.00
Total annual inventory cost
$302,323.79
How this was worked out
- Step 1Holding cost per unit = 20% × 25 = $5.00
- Step 2EOQ = √(2 × 12,000 × 45 ÷ 5) = 465
- Step 3Reorder point = (12,000 ÷ 365) × 14 days = 460
EOQ assumes constant demand and lead time. Add safety stock if your demand is volatile.
Formula
Example
Input
12,000 units/year, $45 order cost, 20% holding on $25
Result
EOQ ≈ 465 units
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