Free Reorder Point Calculator for Shopify Stores (2026)

Q: How much safety stock should I keep?

A common starting point is 7 to 14 days of cover. Use more if your supplier is unreliable or your sales are spiky, less if both are steady and predictable.

Q: Is this the same as Stocky's reorder suggestions?

It's the same underlying idea. Stocky, which shuts down August 31, 2026, calculated reorder points from your sales and lead times too. This calculator lets you do it manually for free.

Q: What's the limitation of this formula?

It assumes steady demand and a steady lead time. If sales are highly seasonal or supplier timing varies a lot, a single static reorder point will be off at the extremes. That's where proper demand forecasting helps, by adjusting per SKU over time.

Q: Does this calculator store my data?

No. Everything runs in your browser. Nothing you type is sent anywhere or saved. The only thing that reaches us is your email, and only if you choose to join the early-access waitlist.

Quick note: this uses the classic reorder-point formula, which assumes fairly steady demand. It's a great manual estimate. Real sales are lumpy and seasonal — handling that automatically (per SKU) is exactly what we're building StockPilot to do. StockPilot is pre-launch / early access, not yet live on the Shopify App Store.

How the reorder point formula works

Your reorder point is simply the stock level at which you should place a new order — calculated so that fresh stock arrives just before you run out. There are two pieces: the stock you'll sell while you wait for the supplier (lead-time demand), plus a buffer for the unexpected (safety stock).

Reorder point = (Average daily sales × Lead time) + Safety stock

…where Safety stock = Average daily sales × Safety-buffer days.

Using the calculator's defaults — 10 units/day, a 14-day lead time, and a 7-day safety buffer:

Lead-time demand = 10 × 14 = 140 units (what you'll sell while waiting for the order)
Safety stock = 10 × 7 = 70 units (your cushion for spikes or supplier delays)
Reorder point = 140 + 70 = 210 units — when stock hits 210, it's time to reorder.

How much should I actually order?

The reorder point tells you when; the order quantity tells you how much. A simple, practical approach is to order enough to cover a chosen period (say 30 days), then round up to your supplier's minimum order quantity (MOQ):

Suggested order qty = Average daily sales × Days to cover

…rounded up to the nearest MOQ. Fill in the optional fields above to see yours.

Use the free spreadsheet template

Want to do this for every product at once? Click "Download free spreadsheet template" above. It opens in Google Sheets or Excel with the columns already laid out, plus a worked example row. Drop the formula below into the Reorder point column and copy it down for all your SKUs:

Reorder point = (Avg daily sales × Lead time) + (Avg daily sales × Safety days)

In a spreadsheet that's simply: = (B2 * C2) + (B2 * D2)

It's a handy stopgap while Stocky winds down. The catch with any spreadsheet: you have to keep the daily-sales numbers current and remember to check it. That manual upkeep — recalculating as sales shift, flagging which SKUs crossed their reorder point this week — is the part StockPilot is designed to take off your plate.

Frequently asked questions

What is a reorder point, in plain terms?

It's the stock level that should trigger your next purchase order. Set it right and new stock lands just before you sell out — so you avoid both stockouts and ordering too early.

How do I find my average daily sales?

Take the units sold over a recent, representative period and divide by the number of days. A 30-day window is a good default. In Shopify, Analytics → Reports → Sales by product gives you the units sold per SKU.

How much safety stock should I keep?

A common starting point is 7–14 days of cover. Use more if your supplier is unreliable or your sales are spiky, less if both are steady and predictable. The calculator lets you try different buffers instantly.

Is this the same as Stocky's reorder suggestions?

It's the same underlying idea. Stocky (shutting down August 31, 2026) calculated reorder points from your sales and lead times too. This calculator lets you do it manually for free. For the full migration picture, see our Stocky shutdown & migration guide.

What's the limitation of this formula?

It assumes steady demand and a steady lead time. If your sales are highly seasonal or your supplier's timing varies a lot, a single static reorder point will be off at the extremes — too high in slow months, too low in peak. That's where proper demand forecasting (what StockPilot is being built for) helps, by adjusting the numbers per SKU over time.

Does this calculator store my data?

No. Everything runs in your browser — nothing you type is sent anywhere or saved. The only thing that reaches us is your email, and only if you choose to join the early-access waitlist below.

Built by the team at Kyrabase Technologies Pvt Ltd, makers of StockPilot. Spotted a mistake or have a suggestion? Tell us — we'll fix it.

Reorder Point Calculator for Shopify Stores

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