Stock Coverage Calculator

Convert available inventory into days and weeks of cover, including incoming and reserved stock.

This tool runs entirely in your browser. Your files are never uploaded to a server.

180

Available stock

12

Days of cover

1.71

Weeks of cover

18.67

Cover with incoming

210

Lead-time requirement

0

Projected stock at arrival

30

Shortage before arrival

What this calculator shows

This tool translates on-hand inventory into days and weeks of supply after reservations, then compares present and incoming stock with expected lead-time demand.

How to use it

Enter physical on-hand units, confirmed incoming units, reserved stock, average daily demand and supplier lead time to model near-term inventory coverage.

Calculation method

Available stock is on hand minus reservations. Days of cover divide that balance by daily demand; the lead-time projection subtracts demand before arrival and flags any shortfall.

Worked planning example

This tool translates on-hand inventory into days and weeks of supply after reservations, then compares present and incoming stock with expected lead-time demand. Available stock is on hand minus reservations. Days of cover divide that balance by daily demand; the lead-time projection subtracts demand before arrival and flags any shortfall.

How to read the result

Enter physical on-hand units, confirmed incoming units, reserved stock, average daily demand and supplier lead time to model near-term inventory coverage. Available stock is on hand minus reservations. Days of cover divide that balance by daily demand; the lead-time projection subtracts demand before arrival and flags any shortfall.

Planning limitations

Average demand can hide promotions, seasonality, cancellations and late purchase orders, so refresh inputs frequently and review critical SKUs at a more granular level.

Privacy and next steps

Average demand can hide promotions, seasonality, cancellations and late purchase orders, so refresh inputs frequently and review critical SKUs at a more granular level. The calculation runs locally in the browser and entered operational values are not uploaded.

Frequently Asked Questions

How is the result calculated?
Available stock is on hand minus reservations. Days of cover divide that balance by daily demand; the lead-time projection subtracts demand before arrival and flags any shortfall.
Which inputs are required?
Enter physical on-hand units, confirmed incoming units, reserved stock, average daily demand and supplier lead time to model near-term inventory coverage.
What are the limitations?
Average demand can hide promotions, seasonality, cancellations and late purchase orders, so refresh inputs frequently and review critical SKUs at a more granular level.