Reorder Point Calculator
Calculate exactly when to reorder each SKU so you never stock out. Free, instant, no signup.
Reorderly connects to your Shopify store and handles this automatically — 24/7, without you touching it.
Frequently asked questions
What is a reorder point?
A reorder point (ROP) is the inventory level at which you should place a new order with your supplier. It's calculated to ensure you receive new stock before running out, accounting for your supplier's lead time and a safety buffer.
How do I calculate my average daily sales?
Divide your total units sold over the last 30–90 days by the number of days in that period. For seasonal products, use a shorter recent window to capture current demand trends.
What is a good safety stock level?
Safety stock depends on the variability of your demand and supplier lead times. A simple starting point is 20–30% of your average demand during lead time. Use our Safety Stock Calculator for a more precise number.
How do I automate reorder point monitoring?
Reorderly connects to your Shopify store, tracks inventory levels against your reorder points, and automatically sends PO emails to your suppliers when stock hits the threshold — so you never have to check manually.