A clear answer to a common reporting task
Teams often have the same small but important question after a customer survey: how do the promoter, passive, and detractor counts become one NPS number? NPS Calculator keeps that arithmetic visible. Enter the three group counts, review the percentages, and see the result on the standard -100 to +100 scale.
The site is intentionally lightweight. It does not require an account, a spreadsheet upload, or a customer database. The goal is to help a product manager, researcher, founder, analyst, or agency check a calculation quickly before a review or report.
Designed for aggregate data
The calculator is meant for counts, not identities. It is suitable for a small survey summary, a monthly dashboard check, or a segment-level comparison when you already know how many responses fall into each NPS group. For deeper work, pair the result with response rate, sample size, survey timing, customer segment, open-text comments, retention, renewal, and support data.
What we aim to provide
- A transparent NPS formula that is easy to reproduce.
- A practical result card with the score, total responses, and group percentages.
- Plain-language explanations that avoid presenting NPS as a universal business grade.
- A calm interface that works on desktop and mobile without a sign-up wall.
What the tool does not promise
A correct calculation does not guarantee that a survey is representative, that a score is comparable across industries, or that a future business result will follow. NPS Calculator is not financial, legal, academic, medical, or professional advice. It is a math and interpretation aid for customer feedback.
Contact
If you find a calculation issue, accessibility problem, unclear explanation, or stale page detail, email support@npscalculator.wiki. Website: npscalculator.wiki.