FREE INVENTORY CALCULATOR
Sell-through rate calculator
Measure the share of available inventory sold during a period. Keep the period and inventory definition consistent when comparing products.
Use zero when no units were received.
SELL-THROUGH RATE35.0%
100units available
65estimated units remaining
Compare this rate with equivalent products and periods; it is a signal, not an automatic markdown rule.
Formula
Sell-through rate = units sold ÷ (starting inventory + units received) × 100
Transfers, returns, write-offs, negative inventory, and stock corrections can require a more detailed denominator. Use this calculator for a clean basic case.
What the result does not tell you
The rate does not know whether a product is new, seasonal, hidden, unavailable, or strategically important. Compare it with similar products and equivalent periods, then review the underlying context.