Inventory & operations

Stock Coverage Calculator

Estimate how long available stock lasts at a daily sales pace.

No sign-upBrowser-only calculationsFormula & methodology
01

Your numbers

Use one currency and the same reporting period. Sample values are filled in to help you start.

units
units/day

Your numbers stay in this browser.

02

Example result

Stock coverage30 days
Weeks of cover
4.29 weeks

Assumes stable demand and excludes future receipts. Seasonal demand can make a historical average misleading.

Understand the result

How to calculate it

Days of cover = available stock ÷ average daily sales

Assumes stable demand and excludes future receipts. Seasonal demand can make a historical average misleading.

Worked example

This is an illustrative scenario, not a market benchmark. Select “Reset to example” to reproduce it in the calculator.

Available on-hand stock
600 units
Average daily unit sales
20 units/day

Stock coverage: 30 days

Common questions

Stock Coverage FAQ

Can I include stock already allocated to orders?

Subtract committed or unavailable stock first if you want coverage for new orders.

What does this calculation leave out?

Assumes stable demand and excludes future receipts. Seasonal demand can make a historical average misleading.

Are my inputs saved or sent to a server?

Calculations run in your browser. We do not send your inputs or results to our server or analytics. A comparison stays in this tab until it is refreshed. A CSV is saved only when you choose to download it. See our privacy policy for ordinary hosting and optional analytics data.

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