% of stock sold in a period. The Sell-Through Rate Calculator takes units sold in the period, units received (opening stock + deliveries) and returns sell-through rate plus units left. Results update as you type, and the formula is shown under the result so you can repeat it in your own spreadsheet.
Online and retail margins are decided by the costs that are easy to forget: fees, shipping, returns, storage and advertising. Fill in every line, even with an estimate, before deciding what to sell and at what price. Use the worked example below to check the maths against your own figures.
How the Sell-Through Rate Calculator works
Retail buyers aim for 60–80% sell-through before markdowns. Low sell-through means overbuying; very high means lost sales from stockouts.
Worked example
With the example values (units sold in the period of 800, units received (opening stock + deliveries) of 1000), the sell-through rate is 80%; units left 200. Change any figure above and the result updates immediately; use Copy results to paste the summary into a note or email.
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Frequently Asked Questions
How is sell-through rate calculated?
sell-through = units sold ÷ units received.
Which figures do I need?
Units sold in the period, units received (opening stock + deliveries). Take them from the same period and the same set of accounts or reports so the ratio is consistent, and check the example values as a guide to the units expected.
Which fees should I include?
Every fee your platform or provider charges on a sale: commissions, payment processing, fulfilment, storage, advertising and the expected cost of returns. Fee schedules change, so check the current rate card.
