Calculate Net Promoter Score from promoters, passives and detractors.
Please do not make financial decisions based on these results.
What is the NPS Calculator?
Calculate Net Promoter Score from promoters, passives and detractors. To use the NPS Calculator, enter promoters, passives, detractors; it returns net promoter score, promoters, detractors, responses, and shows them instantly as you type.
Where the NPS Calculator fits
Calculate Net Promoter Score from promoters, passives and detractors. The main figure it returns is the Net Promoter Score, worked out from the values you enter.
It belongs with the other marketing & saas metrics tools. If you are comparing options or checking a result from another angle, try the Churn Rate Calculator, Conversion Rate Calculator or the CTR Calculator.
How to use the NPS Calculator
- Enter your numbers. Start with Promoters (9-10), Passives (7-8), Detractors (0-6). Use real figures from your own records where you can. Fields marked optional can stay at zero.
- Read the result. The highlighted box gives the Net Promoter Score, and the cards below show Promoters, Detractors, Responses. Tables and charts break it down further.
- Test other scenarios. Results update as you type. Change one value at a time to see what drives the answer, and press Reset to go back to the defaults.
Formula and how it works
Example with real numbers
Here is the NPS Calculator using the default values shown in the calculator above:
Inputs
| Promoters (9-10) | 220 |
|---|---|
| Passives (7-8) | 130 |
| Detractors (0-6) | 70 |
Results
| Net Promoter Score | 36 |
|---|---|
| Promoters | 52.38% |
| Detractors | 16.67% |
| Responses | 420 |
With these inputs the calculator returns Net Promoter Score: 36. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Promoters (9-10) from 220 to 264 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| Net Promoter Score | 36 | 42 | +17.1% |
| Promoters | 52.38% | 56.9% | +8.6% |
| Detractors | 16.67% | 15.09% | -9.5% |
| Responses | 420 | 464 | +10.5% |
The input that moves the result most is the one to check twice. Change it in the calculator above to test your own case.
What the results tell you
The results panel of the NPS Calculator reports Net Promoter Score, promoters, detractors and responses. Compare these figures while changing one input at a time, and use the related calculators below to look at the same situation from another angle.
Method and limits. This calculator applies the formula in the section above to your inputs, in your browser; nothing you enter is stored on our servers. The result is only as accurate as the numbers you enter and the formula shown above. It is for information, not financial, tax or legal advice.
Frequently asked questions
What is a good NPS?
Above 0 is positive, above 30 is good and above 70 is excellent.
Which marketing metrics matter most?
Customer acquisition cost, lifetime value, conversion rate, churn and return on ad spend show whether growth is profitable.
Do these calculators connect to my analytics?
No. You type in your own figures, and nothing is sent to our servers.
Are the results guaranteed?
No. Results depend entirely on the numbers you enter and the formulas shown on this page. Please do not make financial decisions based on them alone; confirm important figures with a licensed professional.
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