The formula
Sell-through rate = items sold ÷ (items in stock at the start + items added) × 100, over a set period. Sell 52 of 160 items in 30 days and your sell-through is 32.5% for the month.
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Sell-through rate calculator
See how quickly your stock is really selling: the share that sold, how long the rest will take at this pace, and the money still sitting on the shelf.
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Sell-through rate
32.5%
52 of 160 items sold
Selling pace
12.1 a week
To sell the rest
63 days
108 items left
Stock turnover
5.5 times a year
Average days to sell
66 days
Tied up in unsold stock
£756.00
Guide
Reading your sell-through rate
What a good rate looks like
It depends on what you sell and how you price it. Compare like with like: the same category, the same length of period, month after month. A falling rate is often the first sign of overpricing or the wrong stock.
Turnover and days to sell
Stock turnover counts how many times your average stock sells through in a year. Days to sell is the other side of the same coin: how long an average item waits for a buyer. Faster turnover means your money comes back sooner to buy more stock.
What to do with slow stock
- Reprice items that have had views but no sale.
- Relist or improve photos and titles on items with few views.
- Bundle slow items with fast ones.
- Clear true dead stock to free the space and the cash.
How ProfitClerk works this out for you
- Unsold stock and how old it isSee what is sitting on your shelf, how long it has been there, the money tied up in it, sell-through, whether it is listed, and what to do about it.
- Sourcing report: which places pay bestCompare the places you buy stock from: spent, sales, profit, return on cost, days to sell and stock left for each source, from car boots to wholesalers.
- Best sellers and slow moversFind your most profitable eBay products and the stock that has sat longest: top 10 by profit with margin, return on cost and days to sell, plus slow movers.
Questions
What is a good sell-through rate?
There is no single figure. For resellers, a monthly rate that holds steady or rises is a good sign; one that keeps falling means stock is piling up. Compare your own months and categories rather than an industry average.
Is sell-through rate the same as stock turnover?
No. Sell-through is the share of available stock sold in a period. Turnover is how many times the average stock sells in a year. They move together: a higher sell-through means a higher turnover.
Which period should I use?
A month is common for resellers. Use the same length each time so the numbers can be compared.
Should I count items, or money?
This calculator counts items. Add an average cost per item to see the money tied up in what is left.
Find the stock that is not selling
ProfitClerk keeps your stock in step with your sales and shows what has sat unsold for 90, 180 or 365 days, and the money tied up in it.
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