Net Promoter Score Calculator
A net promoter score turns survey answers into one number. Enter the counts from your survey and the score fills in. It is one measure, so read it alongside the comments customers wrote.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Each answer from 0 to 10 falls into one group. Promoters scored 9 or 10, passives scored 7 or 8, and detractors scored 0 to 6. The score is the share of promoters minus the share of detractors. Passives count in the total but not in the score.
The result runs from minus 100, when every answer is a detractor, to plus 100, when every answer is a promoter.
Worked example
Out of 100 answers, with 60 promoters and 15 detractors, the score is 45.
Questions
Why are passives left out of the score?
They count toward the total, which dilutes the score, but they are not added or subtracted. That keeps the score simple.
What is a good score?
A score means most against your own past scores, or against the same survey run over time. Compare like with like rather than against a single figure from elsewhere.
How many answers do I need?
A small count can swing a lot from one answer. Track the score over several survey rounds before you read much into a change.
More like this
- CSAT Score CalculatorShare of satisfied customers, from survey answers.
- Sales Tax CalculatorAdd sales tax to a price, or take it out of a total.
- Markup CalculatorMarkup and margin from cost and selling price.
- Lead Time CalculatorExpected arrival from order date, production and shipping days.
- ROI CalculatorSimple and yearly return on an investment.
- Commission CalculatorCommission from sales, at one flat rate or two rates.