Estimate your National Pension System corpus at retirement and your monthly pension based on annuity allocation.
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%
%
%
Total corpus at retirement
₹1,13,02,440
in 30 years
Total invested₹18,00,000
Lump sum (60%)₹67,81,464
Annuity corpus (40%)₹45,20,976
Est. monthly pension₹22,605
The NPS corpus is calculated using the future value of an annuity (SIP) formula. You can withdraw up to 50% of the corpus as a lump sum and must allocate the remainder as an annuity. This calculator uses the standard 40% annuity model; verify with your provider.
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What is the NPS Calculator?
Net Promoter Score (NPS) is a customer loyalty metric that ranges from -100 to +100. It's calculated by asking customers a single question: 'How likely are you to recommend this company/product to a friend or colleague?' on a scale of 0–10. Respondents scoring 9–10 are promoters (loyal fans), 7–8 are passives (satisfied but vulnerable to competitors), and 0–6 are detractors (unhappy and likely to discourage others). NPS is used by 2 out of 3 Fortune 500 companies because it's simple, predictive of growth, and actionable.
How it works
The calculator counts responses in each category and applies a straightforward formula. You input the total number of promoters, passives, and detractors (or percentages if you prefer). The tool subtracts the percentage of detractors from the percentage of promoters, ignoring passives entirely. This gives you a score that's easy to understand: positive NPS indicates more loyal customers than unhappy ones, while negative NPS signals you're losing customers to competitors.
NPS = (Promoters / Total Respondents × 100) − (Detractors / Total Respondents × 100)
Promoters: customers rating 9–10. Detractors: customers rating 0–6. Total Respondents: the sum of all survey responses. The percentage of passives (rating 7–8) is excluded from the formula but helps you understand the stability of your score.
Examples
Input
Result
Notes
100 total respondents: 50 promoters, 30 passives, 20 detractors
NPS = 30
Strong loyalty; you have 30% more promoters than detractors. Typical for market-leading companies.
100 total respondents: 40 promoters, 35 passives, 25 detractors
NPS = 15
Moderate loyalty; growing but vulnerable. High passive count means churn risk if competitors improve.
100 total respondents: 20 promoters, 30 passives, 50 detractors
NPS = -30
Poor loyalty; you have 30% more detractors than promoters. Urgent improvements needed to survive.
How to use the NPS Calculator
Run a survey asking: 'How likely are you to recommend us to a friend or colleague?' with a 0–10 scale.
Count how many respondents gave scores 9–10 (promoters), 7–8 (passives), and 0–6 (detractors).
Enter the three numbers into the calculator, or enter the total respondent count and the raw counts.
Click 'Calculate' to see your NPS score instantly.
Compare your result to industry benchmarks: software >50 is excellent, retail 30–50 is competitive, hospitality 60+ is expected.
Track your NPS over time (monthly or quarterly) to spot trends and measure the impact of improvements.
Benefits
Simplicity: one question captures loyalty better than lengthy surveys; high response rates mean reliable data.
Predictive of growth: companies with NPS >50 grow 2–3× faster than those with NPS <0, making it a leading indicator of revenue.
Actionable insight: knowing you have 20% detractors tells you exactly where to invest improvement efforts.
Competitive benchmarking: compare your NPS to industry standards (SaaS 40–60, airlines 20–40, luxury 70–80) to see if you're competitive.
Customer feedback loop: NPS surveys often include an open question ('Why did you choose this score?'), uncovering root causes.
Cost-effective: free or low-cost to administer online, no expensive consulting required to interpret results.
Tips & common mistakes
Common mistakes
Ignoring passives: they're not loyal promoters but not detractors either—they're swing votes vulnerable to competitor offers. A campaign focused on converting passives to promoters can raise your NPS significantly.
Surveying the wrong audience: only ask active customers, not tire-kickers or free-trial users who never engaged. Skewed respondent pools distort your score.
One-time measurement: a single NPS reading tells you the score today, not the trend. Measure monthly or quarterly to spot whether you're improving or slipping.
Not following up: knowing you have detractors is useless if you don't ask why or fix root causes. Always include qualitative feedback alongside the score.
Tips
Aim for NPS >0 as a baseline (more promoters than detractors), then set industry-specific targets: SaaS teams often chase NPS 50+, while retail may aim for 40–50.
Use the 'promoter percentage' and 'detractor percentage' breakdowns from this calculator to identify which segment to prioritize—often it's cheaper to convert passives (low-cost upsells) than to win new customers.
Survey after key moments: post-purchase, post-support interaction, or quarterly check-ins give you timely feedback tied to specific experiences.
Segment your respondents: calculate NPS separately by product, region, or customer tier—a low overall NPS might mask pockets of excellence or urgent problems.
Frequently asked questions
What's a good NPS score?
NPS >0 means you're healthy (more promoters than detractors). NPS 20–50 is competitive in most industries. NPS >50 is excellent and predictive of strong growth. NPS <0 signals serious loyalty problems and high churn risk.
Can NPS be negative?
Yes. A score of -50 means you have 50% more detractors than promoters—this happens when customers are dissatisfied and actively discouraging others. It's a red flag that requires urgent action.
How many responses do I need for a reliable NPS?
Aim for at least 50–100 responses per survey cycle to reduce statistical noise. Larger companies often survey 500+ to segment reliably by department or region. Even 30 responses can be useful for spotting trends over time.
Should I weight responses equally?
The standard NPS formula treats all responses equally. If you need to weight by customer value (e.g., high-LTV customers matter more), calculate a separate 'weighted NPS'—multiply each response by its weight before summing—but always report the standard NPS for external benchmarks.
What's the difference between NPS and satisfaction (CSAT)?
CSAT asks 'How satisfied are you?' on a 1–5 scale and measures happiness. NPS asks likelihood to recommend and predicts loyalty and revenue growth. NPS is forward-looking and predictive; CSAT is backward-looking and emotional.
How often should I measure NPS?
Monthly or quarterly is typical for product teams; this frequency catches trends fast. Annual NPS is fine for smaller businesses or stable markets. Transactional NPS (surveying every customer immediately after purchase) is more frequent but resource-heavy.