Reorder Point Calculator
Find the stock level at which you should reorder. This free online business & marketing calculator runs entirely in your browser — no signup, no data sent anywhere.
Inputs
Results
How It Works (Formula & Method)
The reorder point is the demand you expect during the supplier lead time plus a safety-stock buffer for variability: (daily demand × lead time) + safety stock. Placing an order when stock hits this level avoids stockouts while the replenishment is in transit.
Worked Example
Below is a worked example using the calculator's default values. The same numbers are pre-filled in the form above so you can press Calculate and see the result without typing anything.
Inputs used:
- Average Daily Demand (units): 20
- Lead Time (days): 7
- Safety Stock (units): 30
With these inputs, the calculator computes the metrics shown in the Results panel. Change any value and press Calculate again to see how the result responds — the live widget and the chart both update instantly.
Frequently Asked Questions
What does the Reorder Point Calculator compute?
The Reorder Point Calculator takes 3 input values and returns 2 results. Calculate the inventory reorder point from daily demand, supplier lead time, and safety stock, so you reorder before running out.
Is my data sent to a server?
No. The Reorder Point Calculator runs entirely in your browser using static JavaScript. Your inputs are never transmitted to CalculatorHive or any third party, and nothing is stored after you close the page.
Is this calculator free to use?
Yes. Every calculator on CalculatorHive is completely free. There is no signup, no paywall, and no usage limit. The site is supported by display advertising and affiliate partnerships, which are clearly labeled.
How accurate is the result?
The math is mathematically exact for the inputs you provide. Real-world accuracy depends on how accurately your inputs reflect the real situation — defaults are typical values, not guarantees.