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REORDER

Reorder Point Calculator for Shop Inventory

Calculate when to reorder an item and how much to order from average sales, supplier lead time and safety stock.

Item
Per
days

Days from order to stock on your shelf.

days of sales

Cover for late delivery or a sudden big order.

days
Assumptions used VIEW ▾

Reorder point = average daily sales × (lead time + safety days). Order quantity = daily sales × days between orders. Works best for steady sellers; review seasonal and slow-moving items separately.

REORDER WHEN STOCK FALLS TO

16units

Order quantity15 days of sales
30 units
Safety stock
6 units
Average daily sales
2.0
Reorder at16 units

How it’s calculated

Reorder point = daily sales × (lead time + safety days)

Example: 60 a month = 2 a day; lead time 5 + safety 3 days → reorder at 16.

Estimates for planning, based on the assumptions shown. They are not a guarantee of quantities or professional engineering advice; check critical work with a qualified professional.