Skip to content
ENExplore Calculators

Net Promoter Score Calculator

Work out net promoter score instantly with clear inputs, formula shown and shareable results.

About Net Promoter Score Calculator

The net promoter score is the percentage of promoters less the percentage of detractors, with passives counted in the base but not the numerator. It ranges from −100 to +100 and is a relative benchmark rather than a percentage.

Formula

Net promoter score

NPS = (promoters - detractors) / total responses × 100

Worked example

With the default values below, Net Promoter Score Calculator returns Net Promoter Score of 37.5. Change any input above and every figure here is recalculated in your browser.

Inputs used

Promoters Scoring 9 Or 10accepts 0–10,000,000
420
Passives Scoring 7 Or 8accepts 0–10,000,000
260
Detractors Scoring 0 To 6accepts 0–10,000,000
120

Results

Net Promoter Score
37.5
Share Of Promoters
52.50%
Share Of Detractors
15.00%
Assessment
Good

Step by step

  1. 1Values used
  2. 2Net promoter score
  3. 3Net Promoter Score= 37.5
  4. 4Share Of Promoters= 52.50
  5. 5Share Of Detractors= 15.00
  6. 6Assessment= Good

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Figures are estimates based on the inputs given. Marketing performance, platform fees and conversion behaviour vary by audience, channel and season. Use this as a planning guide, not a forecast.
  • This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Figures are estimates based on the inputs given. Marketing performance, platform fees and conversion behaviour vary by audience, channel and season. Use this as a planning guide, not a forecast.

Frequently Asked Questions

Why are passives excluded from the numerator?

Because they neither recommend nor criticise, so they dilute the score without contributing to it.

What score is good?

It varies enormously by industry. Compare against your own trend and sector peers, not an absolute target.

Related Calculators

Net Promoter Score Calculator – Calculate Net Promoter Score