How it is calculated
Average demand × lead time + safety stock.
Ecommerce
Reorder Point Calculator
Estimate when inventory should be reordered. Results are estimates and are calculated locally on your device.
Use this result as a planning estimate, not financial, tax, legal, or professional advice.
How to use this tool
Understand the result before you act on it
Estimate when to reorder inventory based on demand during supplier lead time and optional safety stock.
Worked example
If you sell 20 units per day, lead time is 7 days, and safety stock is 40 units, reorder point is 180 units.
What to do with the number
Use the result as a baseline, test different assumptions, and compare scenarios before changing budgets, staffing, pricing, or processes.
Common questions
Reorder Point Calculator FAQ
What is a reorder point?
Use the calculator with your own business inputs and compare the result over a consistent period. The output is a planning estimate, so validate important decisions against your accounting or operating data.
How does lead time affect reorder point?
Use definitions that stay consistent from one measurement period to the next. Consistency makes the result more useful for comparisons and trend tracking.
What is safety stock?
No. The calculator provides an estimate from the values you enter. Real outcomes depend on pricing, operations, customer behavior, data quality, and other business conditions.