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Inventory Reorder Point Calculator

Calculate a reorder trigger and suggested order quantity from demand, lead time, safety stock, and inventory position. Nothing you enter leaves your browser.

Enter your values and we’ll calculate the result.

Your result
Enter your values, then calculate.

What this tool does

About the Inventory Reorder Point Calculator

Calculate a reorder trigger and suggested order quantity from demand, lead time, safety stock, and inventory position. It is a planning tool for testing business assumptions and comparing scenarios before making an operational decision.

The calculation uses average daily demand, supplier lead time, safety stock, units on hand, units already on order, backordered units, and coverage wanted after receipt.

How to use it

  1. Review the starting values for average daily demand, supplier lead time, safety stock and replace them with your own.
  2. Choose any available units or assumptions, then select “Calculate reorder point.”
  3. Read the labeled result, compare another scenario if needed, and copy the output for your notes.

Practical example

Start with a known input

The workbench starts with a complete scenario:
Average daily demand: 25 units
Supplier lead time: 12 days
Safety stock: 100 units
Units on hand: 350 units
Change one assumption at a time to see how it affects the result.

What to know about the result

  • Results are estimates based only on the supplied values. Rounding, fees, local rules, and real-world conditions may change the final outcome.

Common questions

Using the Inventory Reorder Point Calculator

Is the Inventory Reorder Point Calculator free to use?

Yes. FormatCalc's Inventory Reorder Point Calculator is free to use with no account required.

Is my data private when I use the Inventory Reorder Point Calculator?

Yes. This tool processes your input locally in your browser. FormatCalc does not upload or store what you enter.

How do I use the Inventory Reorder Point Calculator?

Enter your values, select any units, and choose Calculate reorder point. You can then copy the result.

What should I check before using the result?

Results are estimates based only on the supplied values. Rounding, fees, local rules, and real-world conditions may change the final outcome.