PRIX TOOLS / Ecommerce calculators
Safety Stock Calculator
Estimate a safety-stock scenario with fixed lead time, daily demand variation and a stated service-level assumption.
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Safety Stock Calculator — steps and download
Enter daily-demand standard deviation, lead time and service-level coefficient. Evaluate the resulting buffer stock in units.
Does the formula include lead-time variability?
This model assumes fixed lead time and calculates Z × demand standard deviation × √lead time. Variable lead times and seasonality need a broader model.
Frequently asked questions
Which model is used?
With fixed lead time and independent daily demand, use z × daily demand standard deviation × square root of lead time in days.
Does the formula include lead-time variability?
This model assumes fixed lead time and calculates Z × demand standard deviation × √lead time. Variable lead times and seasonality need a broader model.
Are my files and input data uploaded?
Tool processing runs on your device; file and form contents are not sent to a server for processing. Loading the website still creates standard web requests. Using a contact link is a separate action.
Do I need an account or API key?
No account or API key is required for the tool. Use is free within the file, operation and device limits stated on the page.