Reorder on time, not when you've sold out
Enter your daily sales, lead time and stock to get the reorder point, safety stock, days of stock left and a suggested order that covers the days you choose.
Reorder Point Calculator
No sign-up. What you type never leaves your device.
The starting numbers are only an example. Use sales from a recent, typical period, and the lead time from placing an order to having stock you can sell, including shipping and receiving. For FBA or a 3PL, add the time to check in at their warehouse.
How it’s calculated
Sold during lead time = average daily sales × lead time- Worst-case safety stock:
(highest daily sales × longest lead time) − (average daily sales × average lead time). 18 × 20 − 12 × 14 = 192. Reorder point = sold during lead time + safety stock. 168 + 192 = 360.Stock position = in stock + already on orderDays of stock left = in stock ÷ average daily salesDays until reorder point = (stock position − reorder point) ÷ average daily salesOrder-up-to level = average daily sales × (lead time + days to cover) + safety stockSuggested order = order-up-to level − stock position, rounded up to whole units. It’s enough to cover your chosen days after the order arrives, with the safety stock still on hand.
Dates count calendar days from today on this device. Round the order up to your supplier’s case pack or minimum order quantity.
Adding a new product to the range? Make its main image on pure white →
Everything you need, nothing you don't
Reorder point
Sales during the lead time plus safety stock, in units.
Safety stock
From your worst-case sales and lead time, or a number you choose.
Days of stock left
How long your stock lasts and roughly when you run out.
When to order
Days until you hit the reorder point and a reorder-by date.
Order quantity
How much to order to cover the days you choose after it arrives.
Copy results
Copy the numbers for your purchase plan.
Done in 3 steps
Enter sales and lead time
Average units sold per day and days from order to sellable stock.
Set safety stock
From your highest daily sales and longest lead time, or type it.
Add your stock
What's on hand, what's on order and how many days each order should cover.