Reorder Point Calculator

Set stock thresholds so stockouts and emergency orders are less likely.

Methodology & standardsRuns on your deviceReorder Point = (Average Daily Sales × Lead Time Days) + Safety Stock | Recommended Order = Reorder Point + (Daily Sales × Forward Coverage Days) − Current Stock

Inputs

Results update live

Presets:

Average daily unit sales

Average units sold per day.

Supplier lead time (days)

Average lead time from purchase order to received inventory.

Safety stock units

Buffer stock kept to absorb demand or lead-time variability.

Current stock unitsAdvanced

Premium: current on-hand stock for urgency planning.

Supplier minimum order quantityAdvanced

Premium: supplier MOQ used for recommended order sizing.

Scenario workspace

Save scenarios and compare outcomes. Local autosave stays on by default for quick planning.

Free Core: 1 saved scenario per tool.

Local browser save only on this device.

Loading saved workspace...

No saved scenarios yet. Save your current assumptions to compare results over time.

Scenario	Plan	Reorder point	Lead-time demand
Current session	Free	456	336

When to use this tool

Before purchase orders or replenishment reviews.
When lead times change or supplier reliability shifts.
If stockouts, rush orders, or overstock are cutting into cash.

Reference links

These are the external references we use when the calculation needs a wider industry or platform context.

Shopify reorder point guide Shopify stock replenishment Shopify inventory management

FAQ

Frequently asked questions

How the calculation works and where its limits are.

How do I choose safety stock?

Use demand volatility, supplier reliability, and stockout tolerance to define a realistic safety buffer.

What if lead time changes frequently?

Recalculate reorder points regularly and use conservative lead-time assumptions for critical SKUs.

Can this replace inventory software?

It supports planning decisions but works best as part of a broader inventory management workflow.