Sell-Through Rate Calculator
Sell-through rate is a fast read on how well inventory is moving: the percentage of stock received in a period that actually sold. Retailers and merchandisers use it to decide whether to reorder, mark down, or hold. A high rate suggests demand is strong relative to supply; a low rate can flag overbuying or a pricing problem. Enter the units you received and the units you sold over the same period. This calculator returns the sell-through rate, the units remaining, and the share still on hand.
Sell-through rate formula
Sell-through rate = (units sold / units received) * 100
Units remaining = units received - units sold
On-hand share = 100 - sell-through rate
Both quantities must cover the same period. The rate is the fraction of received stock that sold; the remaining units are what is still on hand.
Using sell-through rate
- Match the period for units sold and units received, often weekly or monthly.
- A high sell-through rate can justify a reorder before stock runs out.
- A low rate may signal overbuying, weak demand, or a pricing issue.
- Compare against your own target for the period, not a universal benchmark.
- U.S. Census retail trade data offers sector context for sales and inventory levels.
Sell-through rate: frequently asked questions
What is sell-through rate?
Sell-through rate is the percentage of received inventory that sold within a period. It equals units sold divided by units received (beginning inventory plus receipts), multiplied by 100. It shows how quickly stock is moving.
How do I calculate sell-through rate?
Divide units sold in the period by the units available at the start (received), then multiply by 100. For example, selling 150 units of 500 received gives a sell-through rate of 30%.
What is a good sell-through rate?
It depends on the product, season, and replenishment cycle. Many retailers review sell-through against an internal target for the time period; a higher rate means stock is moving and may justify reordering, while a low rate may signal overbuying or pricing issues.
Over what period is sell-through measured?
Sell-through is typically measured weekly or monthly. The period must match between units sold and units received so the percentage is meaningful. This calculator works for any period as long as both inputs cover it.
How does sell-through differ from inventory turnover?
Sell-through is the share of a specific batch of received stock that sold in a period. Inventory turnover measures how many times average inventory is sold and replaced over a longer span, usually a year. They answer related but different questions.
Official sources
- U.S. Census Bureau: Monthly Retail Trade and Inventories.
- U.S. Small Business Administration: Manage inventory and assets.
Reviewed by the CalculatorHub team, edited by James Graham, 16 June 2026. See our methodology.