Reorder point helps prevent stockouts by combining expected demand during lead time with safety stock.
How to use this Inventory Reorder Point Calculator
Enter your ecommerce inputs and compare the calculated result with your target. Use conservative assumptions for fees, refunds, shipping, and demand.
Formula
Reorder Point = Average Daily Sales × Lead Time + Safety Stock
A reorder point prevents stockouts by accounting for normal demand during supplier lead time plus a safety stock buffer.
For cleaner decisions, combine this calculator with profit, conversion, return, inventory, or repeat purchase metrics from the related tools below.
FAQ
What does this calculator estimate?
Calculate when to reorder inventory using daily demand, lead time, and safety stock.
What formula does it use?
Reorder Point = Average Daily Sales × Lead Time + Safety Stock
Is this exact accounting?
No. This calculator is for planning and decision support. Your actual accounting may include taxes, refunds, chargebacks, fixed costs, and timing differences.
What should I do after calculating this?
Use the result to test pricing, shipping policy, ad spend, discounting, inventory, and retention assumptions before making operational changes.