Calculate
Find out how many weeks your current inventory will last with this free weeks on hand calculator.
Weeks on hand
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What is
Weeks on hand (WOH) measures how long your current inventory will last at your average rate of usage or sales. It shows the number of weeks of coverage you have before you need to restock, based on how much inventory you're using each week.
What you need to know about weeks on hand
Weeks on hand looks backward, using your current inventory and past average usage, not future demand forecasts.
A high weeks on hand figure can signal overstocking, while a low figure raises the risk of running out of stock.
Weeks on hand is different from weeks of supply, which factors in forecasted demand instead of historical usage.
How to calculate weeks on hand
Why is calculating weeks on hand important?
Prevents stockouts
Knowing your weeks on hand helps you spot low inventory early, so you can reorder before you run out and lose sales to unmet demand.
Reduces excess inventory
A high weeks on hand number flags overstocked items, and can help you free up warehouse space and working capital tied up in slow-moving stock.
Improves purchasing decisions
Tracking weeks on hand across products helps you time purchase orders more accurately, balancing your lead time against how quickly stock actually moves.
Frequently asked questions
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