Free tool
Enter how fast a SKU sells and how long your supplier takes. You get the reorder point, how many to order rounded to cartons, and the date to order by. No sign-up; the link keeps your numbers so you can share it.
Result
Order this weekOrder this week. You hit the reorder point in about 1 day.
Reorder point
148
Order
72
3 cartons of 24
How it was calculated
Projected stock at the current pace
LeadLamp runs this calculation across your whole catalog, counts what’s on the water, and emails your team what to order and how many cartons. Free for up to 20 SKUs.
The reorder point is the stock level at which you should place the next order, so the new stock arrives before you run out. It’s daily sales × lead time, plus safety stock.
If a SKU sells 2 a day and your factory needs 60 days to get stock to your warehouse, you need 120 units to cover the wait. Add 28 units of safety stock and the reorder point is 148. When on hand plus on order drops to 148, order.
Count every day from placing the order to the goods being sellable: production, inland transport, freight, customs and warehouse check-in. For factories in China shipping by sea, 45–90 days is typical.
If you’re not sure, average your last three shipments and round up. A lead time that’s too short is the most common reason a reorder point fires too late.
Units you’ve already ordered will arrive before the next order would. Counting them stops you from ordering the same container twice. Set them back to 0 once they’re checked in.
Enough to cover the delays and sales spikes you’ve actually seen. A simple rule is 7–14 days of sales for sea freight. If a supplier is often late, use the number of days they’re usually late.
Add the factory’s shutdown to the lead time (the holiday field does this). The reorder point rises, so the calculator tells you to order weeks earlier. Remove it after the holiday.
Factories ship whole cartons or have order multiples. The suggestion is rounded up to your carton size so it’s something you can actually order.
Yes. The calculator runs the same code that produces LeadLamp’s Monday email.