Reorder Point Calculator
Use the Reorder Point Calculator. Enter Daily unit sales and Lead time days for a clear result, formula explanation, and practical planning checks.
Reorder Point measurements
Enter your values, then calculate.
Result
How to calculate reorder point
Reorder point is the inventory level at which a new order should be placed to avoid stockout, based on how much is used during the lead time to receive a new shipment.
How the calculation works
Reorder point = Daily unit sales × Lead time days.
Example
20 units sold per day with a 7-day lead time: 20×7 = 140 units, meaning a reorder should trigger when inventory drops to 140 units.
Frequently asked questions
How is Result calculated?
Result = [Daily unit sales] × [Lead time days].
Is the Reorder Point Calculator free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Reorder Point Calculator
Reorder point = Daily unit sales × Lead time days.
Let's understand your reorder point result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Reorder Point
- This basic formula doesn't include a safety stock buffer for demand variability — add safety stock separately for more robust protection against stockouts during unexpectedly high demand.
- Recalculate as sales velocity or lead time changes, since both directly shift the appropriate reorder point.
Common Reorder Point Mistakes to Avoid
- Using this basic reorder point without adding a safety stock buffer, leaving no margin for demand variability or lead time delays.
When to Use This Calculator
Reorder point is the inventory level at which a new order should be placed to avoid stockout, based on how much is used during the lead time to receive a new shipment.