Sell-Through Rate Calculator
See what share of received stock actually sold in a period — sell-through rate, units remaining and days of inventory left at the current pace.
How it works
Sell-through rate = units sold ÷ units received × 100 · Days of stock left = units remaining ÷ (units sold ÷ days)
Sell-through rate is the share of the stock you received in a period that actually sold, a fast read on how well a product moves. A high rate can signal strong demand or under-buying; a low rate flags slow sellers that tie up cash and shelf space. Pairing it with the days-of-stock-left figure tells you whether to reorder, discount, or hold.
Worked example
Receiving 500 units and selling 320 over 30 days gives a sell-through of 320 ÷ 500 = 64%. That is about 10.7 units a day, so the remaining 180 units would last roughly 17 more days at the same pace.
Frequently asked questions
What is a good sell-through rate?
It depends on your reorder cadence and category, but many retailers watch for a monthly sell-through around 40% to 80%. Consistently very high rates may mean you are under-ordering and missing sales; very low rates signal overstock.
How is sell-through different from turnover?
Sell-through compares units sold to units received in one period, usually short. Inventory turnover compares annual cost of goods sold to average inventory across the whole year. Sell-through is the quick per-batch read; turnover is the annual view.
How can I improve a low sell-through rate?
Order smaller, more frequent batches, sharpen pricing and promotion, improve product placement, or discontinue chronic slow movers. The days-of-stock-left figure helps you time a markdown before the stock goes stale.
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Educational estimate, not financial advice.