Stock Cover Days Calculator
Estimate Australian retail stock cover days and lead-time margin from saleable units, average daily sales and supplier lead time.
Your results
Calculation breakdown
- Days of cover
- saleable units on hand ÷ average daily units sold
Worked example
At 900 saleable units and 60 units sold daily, stock cover is 15 days, five days beyond a 10-day supplier lead time.
Assumptions
- Average demand remains steady.
- All on-hand units are available for customer orders.
Sources
Rates effective 23 August 2026.
How this calculator works
Estimate how many selling days current on-hand stock can support at an entered average daily unit-sales rate. The lead-time margin indicates whether current cover extends beyond a typical replenishment wait under steady demand. Inputs and intermediate quantities remain visible so Australian operators can reconcile the result with point-of-sale, inventory, fulfilment, website or campaign records.
Frequently asked questions
Which records should I use for the stock cover days result?
Use available-to-sell stock, recent representative daily sales and a measured order-to-receipt supplier lead time. Use one consistent reporting period and document any exclusions or channel filters.
What can distort this stock cover days estimate?
Demand seasonality, promotions, safety stock, minimum orders, inbound stock and supplier disruption are excluded. Compare like-for-like periods before treating a change as operational improvement.
Does this stock cover days calculator confirm compliance?
No. It is a transparent operational estimate only. Use available-to-sell stock, recent representative daily sales and a measured order-to-receipt supplier lead time. Obtain qualified advice where consumer, privacy, spam, tax or accounting obligations apply.