NPS Calculator is a free browser tool for turning survey response counts into a Net Promoter Score. It separates promoters, passives, and detractors, explains the -100 to 100 scale, and adds example, sample-size, accuracy, and interpretation notes for quick customer-feedback analysis.
External tool opens in a new tab.
What is this tool?
Calculate a Net Promoter Score from promoter, passive, and detractor responses, then review the formula, example, and interpretation guidance.
Best for
Teams that need a quick, transparent way to summarize customer-survey responses as an NPS score.
Pricing note
The calculator is free to use in a browser. NPS is a survey summary rather than a complete measure of customer health, so use a suitable sample and combine it with qualitative feedback.
Key features
Use cases
Turn survey response totals into an NPS score in seconds.
Check the formula and an example before sharing a customer-feedback report.
Use the interpretation and limitations notes when planning a follow-up survey.
Pros
Cons
How to use
Enter the counts for promoters, passives, and detractors.
Review the displayed NPS score and the percentage breakdown.
Read the formula, example, and score-meaning notes for context.
Pair the result with customer comments before making a business decision.
FAQ
What does an NPS calculator do?
It converts promoter, passive, and detractor response counts into a Net Promoter Score from -100 to 100.
What is the NPS formula?
NPS is the percentage of promoters minus the percentage of detractors; passive responses are included in the total but do not add or subtract points.
Is NPS Calculator free?
Yes. The browser calculator is presented as free to use without a directory account.
Can NPS replace customer research?
No. Use the score as a summary and combine it with comments, sample-size checks, and other customer signals.
