Ecommerce

Sell-Through Rate Calculator

Sell-through is the share of received stock that actually sold, which is how buying decisions get judged.

What arrived, what sold, and over how long

Units

units

Units sold during the period.

units

Units received into stock for the period.

The period

days

Number of days in the period.

Sell-Through Rate

70.00%

Share of received stock sold in the period.

Formula verified 13 September 2026

Units Remaining

150

Received units not yet sold.

Daily Sell Rate

11.7

Average units sold per day.

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Sell-through rate bands

Where your computed sell-through falls, with the rough movement story each band tells. These thresholds suit a roughly monthly window — sell-through builds over time, so a rate is only comparable against an equal-length period. Read yours together with the timeframe and your stockout risk.

Sell-through rateWhat it typically suggests
Under 40%Slow — most of the stock is still sitting; suspect overstock, weak demand, or a price or listing problem.
40% – 60%Moderate — stock is moving but not briskly; watch the trend and consider a nudge on price or promotion.
60% – 80%Healthy — a strong share sold within the period for many retailers; replenishment is likely warranted.◀ your result (70.0%)
Over 80%Very fast — selling out quickly; strong demand, but you may have under-bought and risk missing sales.

Estimates only — not financial, tax, or professional advice.

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What it calculates: Sell-Through Rate, Units Remaining, Daily Sell Rate.

Updated 5 June 2026 · Transparent assumptions

Units sold over units received, for a defined period

Sell-through measures how much of what you bought has sold. A rate of 80% after a month means the buy was well sized; 20% means you bought roughly five times what the market wanted in that window.

That makes it a verdict on the purchasing decision rather than on the product. A good product bought in the wrong quantity produces a poor sell-through, and the lesson is about order size.

60% in a week and 60% in a year are opposite results

A sell-through figure quoted without its period cannot be interpreted. The same 60% is excellent over seven days and alarming over twelve months, which is why the calculator also reports the daily rate.

Fashion and seasonal retail commonly look at weekly sell-through against a target curve; slower categories use monthly. Whichever you choose, compare like with like and never against a benchmark computed on a different window.

Very high is a missed sale; very low is a markdown coming

A rate near 100% early in the period is not unambiguously good — it usually means you under-bought and left demand unserved, and it should trigger a reorder rather than satisfaction.

A low rate early means the markdown is coming whether you act now or later, and acting early recovers more. The mistake is holding full price into the back half of the season hoping the curve corrects.

Receipts timing, returns and stock that never reached the shelf

If stock arrived part way through the period, the denominator includes units that had less time to sell, which depresses the rate for reasons that have nothing to do with demand. Staggered deliveries need the rate computed per delivery.

Returns, damaged units and stock held back in a warehouse also distort it. The remaining-units figure reported alongside is the sanity check: if it does not match what is physically there, the inputs are wrong.

Sources & References

Figures on this page are checked against primary, authoritative sources. Links open in a new tab.

Related Calculators

Stock CoverageHow many days and weeks of selling your current stock covers, set against the lead time to replace it.
Dead StockWhat stalled stock is worth, the share of your catalogue it occupies, and what storage keeps costing.
Demand ForecastA moving-average and a trend forecast side by side from three months of history, plus your growth assumption.
DIODays of stock on hand against cost of goods sold, with the turnover it implies and the revenue-denominator mistake priced beside it.

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Business disclaimer

Results are estimates for planning and analysis based on the figures you enter. They are not accounting, tax, or financial advice — verify with your own records and a qualified professional before making decisions.

How we calculate · Found an error? email us

Authorship & verification

Written and maintained by , a business operator who builds spreadsheet-based calculators.

What's changed (3 updates)

Published 13 September 2026

  1. Published the calculator with its formula, worked example, assumptions, limitations and a bespoke guide, and added an automated formula test suite covering it.
  2. Tested units sold over units received as a percentage, with units remaining and the daily rate across the period.
  3. Tested that selling everything received gives one hundred percent, and that remaining units reconcile with the two counts.

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