Sell-Through Rate Calculator
Results are estimates based on the values you enter. Recheck your inputs and assumptions before using the output for decisions.
Calculate sell-through rate from units sold and units received to measure inventory movement and stock performance.
Sell-Through Rate Calculator
Free online sell-through rate calculator to measure how much of received inventory has been sold during a selected period. This calculator is useful for retailers, wholesalers, ecommerce teams, inventory managers, merchandisers, warehouse planners, and business owners who want a fast way to judge product movement. Sell-through rate is one of the most practical stock metrics because it shows whether inventory is moving quickly, slowly, or somewhere in between after it enters the business.
This page uses two simple inventory values: units received and units sold. Units received means the quantity of stock brought into inventory during the chosen period, such as a week, month, season, or promotion. Units sold means the number of those units actually sold in that same period. By comparing those two numbers, the calculator shows sell-through rate as a percentage. It also shows unsold units, remaining stock rate, and the number of units sold per 100 units received. That makes the result easier to interpret when you are reviewing purchase decisions, replenishment timing, markdown needs, or product demand strength.
The formula of sell-through rate
Sell-through rate = (Units sold / Units received) x 100
Unsold units = Units received – Units sold
Remaining stock rate = (Unsold units / Units received) x 100
Units sold per 100 received = Sell-through rate
Here units received means the number of items added to inventory during the period, units sold means the number of items sold from that received stock in the same period, sell-through rate means the percentage of received inventory already sold, and remaining stock rate shows the percentage still left unsold.
Solved Example
Example 1: Find the sell-through rate if 1,000 units were received and 650 units were sold.
Solve: Sell-through rate = (650 / 1000) x 100 = 65%
Unsold units = 1000 – 650 = 350
Remaining stock rate = (350 / 1000) x 100 = 35%
Units sold per 100 received = 65
Example 2: Find the result if 2,500 units were received and 1,750 units were sold.
Solve: Sell-through rate = (1750 / 2500) x 100 = 70%
Unsold units = 2500 – 1750 = 750
Remaining stock rate = (750 / 2500) x 100 = 30%
Units sold per 100 received = 70
Example 3: Find the result if 600 units were received and 120 units were sold.
Solve: Sell-through rate = (120 / 600) x 100 = 20%
Unsold units = 600 – 120 = 480
Remaining stock rate = (480 / 600) x 100 = 80%
Units sold per 100 received = 20
Table of sell-through rate calculator
| Units Received | Units Sold | Sell-through Rate | Unsold Units | Remaining Stock Rate |
|---|---|---|---|---|
| 600 | 120 | 20% | 480 | 80% |
| 1,000 | 650 | 65% | 350 | 35% |
| 2,500 | 1,750 | 70% | 750 | 30% |
| 4,000 | 3,400 | 85% | 600 | 15% |
How to use this sell-through rate calculator
Enter the number of units received in the proper input field. After that, enter the number of units sold from that received stock during the same period. Then click the calculate button. The calculator will show sell-through rate, unsold units, remaining stock rate, and units sold per 100 received in the result box.
This calculator is useful when reviewing how well a product, category, campaign, or seasonal stock intake is performing. A high sell-through rate usually suggests strong demand or well-matched purchasing. A low sell-through rate can suggest overbuying, weak demand, poor product-market fit, or the need for pricing or merchandising changes. Looking at unsold units beside the percentage helps turn the metric into an operational stock decision, not just a report number.
When using the result, remember that sell-through rate should be read in context. A very high sell-through rate may be good, but it can also mean stockouts or missed sales if inventory was too low. A lower rate may be acceptable early in a season or on long-tail items. Even so, sell-through remains one of the clearest quick inventory metrics in retail and product planning. This calculator gives a fast numerical view that supports purchasing, replenishment, markdown planning, stock review, and sales analysis.