NPS Calculator (Net Promoter Score)
Net Promoter Score from survey responses.
Calculate Net Promoter Score (NPS) from promoter, passive, and detractor counts. See your NPS score and how it benchmarks against your industry.
What this tool does
Net Promoter Score (NPS) measures customer sentiment by converting survey responses into a single -100 to +100 metric. The calculator takes counts of promoters (those rating 9–10), passives (7–8), and detractors (0–6), then computes NPS as the percentage of promoters minus the percentage of detractors across your total respondent base. Passives are counted in the overall survey size but don't contribute to either the promoter or detractor percentages. The result shows your NPS score alongside a typical industry benchmark band, illustrating where your score falls relative to common reference ranges. This calculation is useful for tracking how customer loyalty or satisfaction trends over time across different segments or periods. The output reflects only the respondent data entered and assumes responses map cleanly to the standard 0–10 scale groupings.
Enter Values
People also use
Marketing & Growth
Conversion Rate Calculator
Calculate conversion rate from visitors and conversions, plus revenue implications per percentage-point improvement at your average order value.
Startup & VC
Business Valuation Calculator
Estimate business valuation using both an earnings-multiple approach and a net-asset approach — the two numbers usually bracket the real range.
Financial Health
Credit Card Rewards Value Calculator
Calculate net annual value of credit card rewards after the annual fee. Enter spend and reward rate to see net rewards value.
Formula Used
Spotted something off?
Calculations or display — let us know.
Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
NPS = Promoters% minus Detractors%. 60 promoters, 30 passives, 10 detractors = 60% - 10% = 50 NPS. Above 50 is excellent, 30-50 good, 0-30 average, negative poor. NPS correlates with revenue growth and churn — one of the most-tracked customer metrics.
Quick example
With promoters of 60 and passives of 30 (plus detractors of 10), the result is 50. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.
Which inputs matter most
You enter Promoters (9-10), Passives (7-8), and Detractors (0-6). Not every input has equal weight. Adjusting one input at a time toward extreme values shows which ones move the result most.
What's happening under the hood
Standard NPS formula. Passives excluded from the calculation but included in total respondents denominator. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.
Using this as a check-in
Re-run this every three months. A single reading tells you where you stand; four readings tell you whether things are improving. The trend matters more than any individual snapshot.
What this doesn't capture
The score collapses the full survey into a single number. The "why" comments behind each rating — what promoters love, what detractors hate — carry the actionable insight that the score itself can't show. Track the score for the trend, but read the verbatim feedback for the cause.
Where to go next
This calculation rarely sits alone in a planning exercise. If you're running these numbers, you'll probably also want the conversion rate calculator, the business valuation calculator, and the credit card rewards value calculator — each one answers a different question in the same territory. Treating them as a set rather than in isolation usually produces a more honest picture.
An NPS of 50 based on 60 promoters, 30 passives, and 10 detractors indicates your customer loyalty score.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
The calculator computes Net Promoter Score by first categorizing survey responses into three groups based on rating scales: Promoters (ratings 9–10), Passives (ratings 7–8), and Detractors (ratings 0–6). The NPS is then calculated as the percentage of Promoters minus the percentage of Detractors, where each percentage is derived from the total number of respondents across all three groups. Passives are included in the denominator when calculating percentages but do not directly contribute to the NPS score itself. The model assumes responses are accurately categorized and treats the sample as representative of the broader population. It does not account for survey methodology limitations, response bias, or changes in sentiment over time.
References
Frequently Asked Questions
NPS benchmarks?
Sample size needed?
Relational vs transactional?
NPS criticism?
Related Calculators
Conversion Rate Calculator
Calculate conversion rate from visitors and conversions, plus revenue implications per percentage-point improvement at your average order value.
Business Valuation Calculator
Estimate business valuation using both an earnings-multiple approach and a net-asset approach — the two numbers usually bracket the real range.
Credit Card Rewards Value Calculator
Calculate net annual value of credit card rewards after the annual fee. Enter spend and reward rate to see net rewards value.
More SaaS & Subscription Calculators
SaaS & Subscription
Annual Recurring Revenue Growth Calculator
Calculate your annual recurring revenue growth rate year-over-year and track absolute ARR added — the core SaaS metric investors review first.
SaaS & Subscription
ARPU Calculator
Calculate ARPU by entering total revenue and active user count to see average revenue per user monthly and annualised instantly.
SaaS & Subscription
ARR Calculator
Calculate current ARR and forecast future ARR using your MRR and monthly growth rate over a 12 to 24 month projection horizon.
SaaS & Subscription
ARR Payback Period Calculator
Calculate ARR payback period using total CAC spend, new ARR added, and gross margin to estimate months until acquisition costs are recovered.
SaaS & Subscription
CAC Payback Period Calculator
Calculate CAC payback period in months from customer acquisition cost, MRR per customer, and gross margin on the contract.
SaaS & Subscription
Churn Rate Calculator
Calculate churn rate and net growth rate from starting customers, customers churned, and customers gained during the period.
Explore Other Financial Tools
Green & Sustainable Finance
Hydropower ROI Calculator
Calculate micro-hydropower ROI from installation cost, annual kWh generated, electricity price, and ongoing maintenance.
Business & Startup
EBITDA Calculator
Calculate EBITDA and EBITDA margin from revenue, COGS, operating expenses, depreciation, and amortisation — the headline operating-profit metric.
Income
Equity Option Breakeven Calculator
Find the share price needed for stock options to break even after exercise cost and tax. Enter strike price to see breakeven price and current paper value.