Amazon Restock Planner
Estimate when to reorder and how much, from your current stock, sales rate, supplier lead time and safety buffer.
How to use this tool & where to get the input
Input — from your Amazon seller account
Daily sales rate: drop a settlement file into the SKU Profitability Report on this site (units ÷ days in the period), or use Reports → Business Reports → Detail Page Sales and Traffic.
Steps- Enter current stock, daily sales, supplier lead time and a safety buffer (FBA: add Amazon inbound/check-in time to lead time).
- Read days of cover, projected stockout date, the order-by date and suggested order quantity.
A steady average. Real demand moves with season, price and ad spend, so treat every date below as a projection from this one figure.
Days of cover
30 days
Projected stockout
8 Oct 2026
Order by
23 Sept 2026
Reorder at
45 units left
Suggested order qty
90 units
Tip: get your real daily sales rate from the SKU Profitability Report — units sold ÷ days in the settlement period. FBA sellers should add Amazon inbound/check-in time to the supplier lead time.
Current stock
90 units
Daily sales rate
3 units/day
Reorder point (order when stock hits this)
45 units
Lead time + safety buffer
15 days
Suggested order (30 days of cover)
90 units