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Net Promoter Score Calculator

Estimate Net Promoter Score from counts of promoters, passives, and detractors.

Updated April 13, 2026
Free online tool
Planning and research use

Why this page exists

Survey analysis gets easier when promoter, passive, and detractor counts are turned into one clear NPS result instead of being converted by hand. This calculator helps visitors estimate Net Promoter Score from simple response counts.

Interactive tool

Run the estimate

Enter your numbers and read the result first, then use the sections below to understand what affects the outcome.

Calculator

Net Promoter Score calculator

Estimate Net Promoter Score from counts of promoters, passives, and detractors.

Result

NPS 48

Estimated Net Promoter Score based on the promoter, passive, and detractor counts entered.

Net Promoter Score48

Total responses100

Promoter percentage62.0%

Detractor percentage14.0%

62 promoters, 24 passives, and 14 detractors gives 100 total responses.
62.0% promoter share minus 14.0% detractor share gives an NPS near 48.
Use the score as a simple customer-experience snapshot, while remembering that response quality and sample mix can affect interpretation.

This is a simple survey-math estimate. NPS interpretation varies by industry, audience, and sample quality, so the result is best used as context rather than as a standalone judgment.

Planning note

Last updated April 13, 2026. Use this tool to compare scenarios and plan ahead, then confirm important details with the lender, employer, insurer, contractor, or other qualified provider involved in the final decision.

How it works

What the calculator is doing

Enter the number of promoters, passives, and detractors.

The calculator totals all responses and converts promoters and detractors into percentages.

It subtracts detractor percentage from promoter percentage to estimate NPS.

Understanding your result

This is a simple NPS math tool, not a full customer-experience diagnosis. The result can be useful for comparison, but sample size, audience, and survey quality still matter a lot.

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Examples

Ways people use this tool

Example scenarios help turn a quick estimate into a more useful comparison or planning step.

Convert raw survey counts into NPS quickly

A quick score estimate can help when a team has the counts already and just needs the final result clearly.

See the promoter and detractor shares together

Showing both percentages alongside NPS can make the score easier to explain to others.

Use it with service metrics

NPS often makes more sense beside retention, first-response, and abandonment-rate checks.

FAQ

Common questions

How is Net Promoter Score calculated here?

The calculator converts promoters and detractors into percentages of total responses, then subtracts detractor percentage from promoter percentage.

Do passives affect the NPS directly?

Passives count toward total responses, but they are not added or subtracted directly in the NPS formula.

Why is NPS only part of the picture?

Because the score does not explain why respondents answered the way they did, and interpretation also depends on industry, sample quality, and context.

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Keep comparing

Use these related tools to compare nearby scenarios, check a second estimate, or keep narrowing down the right decision.

Work ToolsUpdated April 12, 2026