Supply Chain
Reorder Point & Safety Stock Calculator
The stock level that should trigger your next order, so you don’t run out during the lead time — plus how much safety stock buffers the surprises.
Inputs
- Units used per day — Average units sold or consumed daily.
- Lead time — Days from placing an order to receiving it.
- Safety buffer — Extra days of stock to cover demand spikes or delays.
How to use this calculator
- Enter your daily usage, supplier lead time, and a safety buffer in days.
- The result is the stock level that should trigger your next order.
- Order when you hit that number and you won't run out while the next shipment is in transit.
What each term means
- Reorder point
- The inventory level at which you place the next order.
- Lead time
- Days from placing an order to having it on the shelf.
- Safety stock
- Extra inventory that buffers demand spikes and supplier delays.
Educational disclaimer: Outputs are simplified educational estimates built from the numbers you enter — they are not financial, legal, tax, or investment advice, and real decisions deserve verified figures and qualified professionals.