Loading…
This free sell-through rate calculator shows how much of the stock you received has sold, how fast it is selling each week and how many weeks of stock you have left. If a store received 200 units of a style and sold 124, its sell-through rate is 62%.
You sold 62% of what you bought: 124 of 200 units.
Rates, units per week and weeks of supply are shown to one decimal place. Weeks of supply assume you keep selling at the same weekly pace.
You sold 62% of what you bought: 124 of 200 units.
The link holds only these numbers, nothing personal.
Sell-through rate is the share of the stock you received that has sold over a period: units sold ÷ units received × 100. A store that received 200 units of a style and sold 124 has a sell-through rate of 62%, so it has sold 62% of what it bought.
If you started the period with stock already on hand, add it to the units received, so the rate covers everything you had to sell. Count units sold after returns.
Divide the sell-through rate by the weeks on sale to get the weekly rate, and divide the units left by the units sold per week to get weeks of supply. Selling 124 units in 8 weeks is 15.5 units a week, so the 76 units left will last about 4.9 weeks at the same pace.
Weeks of supply is a projection, not a promise: selling slows as sizes and colours break, and it picks up with a markdown or a feature. Work it out again each week with the latest numbers.
A good sell-through rate is one that is on track to sell the style through by the end of its selling window at full price, so buyers judge it against their own plan rather than a single industry number. They compare it with what they planned to have sold by this week, with the same week last season and with the weeks left before markdowns start.
Buyers also read it by category and delivery: a basic is bought to sell steadily over a long season, while a trend piece needs to move quickly. A rate measured on full-price sales says more about demand than one that includes markdowns.
Buyers reorder styles that are selling ahead of plan while there is still enough season left for new stock to arrive and sell. Weeks of supply is the quick check: if the stock left will run out before a reorder could arrive, it is time to reorder or to move stock from slower stores.
If you are the brand, ask your stockists for sell-through by style a few weeks after each delivery. It shows which styles to offer for reorder and which to rethink next season, and it gives your next sales appointment real numbers to work from.
No. Sell-through measures how much of the stock you received has sold in a period, as a percentage, while inventory turnover measures how many times you sell through your average inventory, usually over a year. Sell-through is the quicker read on one style or delivery; turnover describes the whole business over a longer stretch.
Sell-through and weekly rates are shown to one decimal place, and so are units per week and weeks of supply. Units received and sold must be whole numbers, and weeks of supply assume you keep selling at the same weekly pace.
Updated October 6, 2026
Go from unit cost to wholesale price and MSRP, with case packs and minimums.
Get margin, markup and profit from a cost and a price, or price a style to a target margin.
Add a markup to a cost to get a price, or see the markup a price gives you.
Work out how much you can still order each month without breaking your stock plan.
ModaFlow.ai keeps each style's wholesale price, MSRP, case pack and minimum together and shows them on your line sheets, lookbooks and buyer portal. Every plan starts with a 14-day free trial.