Find your sell-through rate — the share of received stock that sold in a period — plus what's left and how long it lasts at the current pace.
Sell-through rate = units sold ÷ units received, over a period (often a month). High rates suggest reordering; low rates suggest overbuying or the need for a markdown. Weeks-of-stock assumes the current sales pace continues. General information only.
Sell-through rate is the percentage of stock that sold versus what you brought in over a period. It's the retailer's pulse-check: a high rate means demand is outrunning supply (reorder), a low rate means cash is stuck on the shelf (markdown or buy less next time). Pair it with weeks-of-stock to time your reorders.
Sell-through rate = units sold ÷ units received
Often benchmarked around 40–80% per month depending on category. Very high can mean you're leaving sales on the table by under-stocking; very low ties up cash.
Monthly is the common window, but fast-moving goods use weekly. Match the period to how quickly you reorder.
Related: inventory turnover calculator · ecommerce profit calculator · average order value calculator · all free calculators.
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Last reviewed: September 2026. Free to use, no signup — Sell-Through Rate Calculator by ToolWise Digital.
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