Sell-Through Rate Calculator
See how much of your stock sold in a period, and how long the rest will last.
- Units left
- 160
- Average daily sales (units)
- 11.3
- Days until sold out
- 14
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How to use the sell-through rate calculator
- Enter the units you received for the period, or the stock you had at the start.
- Enter how many of those units sold, and how many days the period covers.
- Compare the sell-through rate across products to decide what to reorder, discount or drop.
Sell-through rate formula
Use the same period for every product you compare, such as 30 days or one season.
Example
A store received 500 units and sold 340 in 30 days. Sell-through is 340 ÷ 500 = 68%, with 160 units left. At about 11.3 units a day, the rest sells out in roughly 14 days.
What is a good sell-through rate?
It depends on the product and period. For fashion, 60% to 80% over a season is healthy; for fast-moving basics, many retailers look for 20% or more a month. A low rate means stock is sitting; a very high rate can mean you are running out.
How to use it for buying decisions
Reorder products with high sell-through before they run out, discount slow sellers early while they still have value, and use the rate to size your next order.
Frequently asked questions
How do I calculate sell-through rate?
Divide units sold by units received (or starting stock) and multiply by 100.
Is sell-through the same as inventory turnover?
No. Sell-through is the share of stock sold in a period; turnover is how many times you sell your average stock in a year.
Should I use units or value?
Units are simplest. Use cost value if you are comparing categories with very different prices.
What period should I use?
Weekly or monthly for fast sellers, and the full season for seasonal ranges.
Why is my sell-through over 100%?
You sold more than you received in the period, usually because you counted sales from stock you already had. Add starting stock to units received.
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