Inventory Reorder Point Calculator
Plan a reorder trigger from daily demand, lead time and supplied safety stock.
Your inputs
Calculation results
Formula & assumptions
Reorder point = daily demand × lead time + safety stock; demand is assumed constant.
Values use the specified units. Calculations use floating-point arithmetic. Check input measurements and formula assumptions before applying the result.
Compare your scenarios
Save up to five results to compare changes side by side. Scenarios stay in this tab until you clear or reload it.
Using Inventory Reorder Point Calculator
Plan a reorder trigger from daily demand, lead time and supplied safety stock.
- Enter daily demand, lead time, safety stock using the units printed under each field.
- Choose Calculate, or enable live updates. Review the result labels and formula assumptions.
- Save scenarios to compare up to five variations, then copy the report or download JSON or CSV.
Example
Daily demand: 25 items Lead time: 7 days Safety stock: 50 items Reorder trigger · items: 225 Lead-time demand · items: 175
Questions & answers
What does Inventory Reorder Point Calculator calculate?
Plan a reorder trigger from daily demand, lead time and supplied safety stock.
Which units should I enter?
Daily demand uses items. Lead time uses days. Safety stock uses items. Convert values to these units before calculating.
Which formula does it use?
Reorder point = daily demand × lead time + safety stock; demand is assumed constant.
What does the included example show?
Daily demand: 25 items; Lead time: 7 days; Safety stock: 50 items. Result: Reorder trigger · items = 225; Lead-time demand · items = 175.
Can I compare different settings?
Yes. Save a scenario, change the inputs and save another result. Up to five scenarios are compared in this tab; they disappear when you reload or leave.
Can I export the calculation?
Copy the JSON report or download JSON and CSV with inputs, result labels and numeric values. Processing uses local JavaScript; no calculation request is sent to our server. Displayed values use up to 10 significant digits; exports retain JavaScript numeric precision.
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