CSAT Calculator

CSAT Calculator: calculate csat for your business. Formula, benchmarks, and practical tips included.

Customer Satisfaction Score (CSAT) measures how satisfied customers are with a specific interaction, product, or service, typically using a simple rating scale (1–5 or 1–10). CSAT is most useful for measuring satisfaction at specific touchpoints — immediately after a support interaction, delivery, or onboarding call. It provides fast, actionable feedback on individual interactions rather than the overall relationship measured by NPS. Profit Margin Calculator and Markup Calculator provide a more complete customer experience picture alongside CSAT.

Ask customers: "How satisfied were you with [this interaction/product/service]?" on a 1–5 or 1–10 scale.
CSAT % = Number of satisfied responses (typically top 2 ratings: 4–5 on a 5-point scale) ÷ Total responses × 100.
Track CSAT by interaction type, agent, channel, and product to pinpoint specific issues.
Set target CSAT by interaction type — support contacts typically target 85%+; delivery experience 90%+.

CSAT formula

CSAT % = (Number of satisfied responses ÷ Total responses) × 100

"Satisfied" is defined as top-box responses — scores of 4 or 5 on a 5-point scale, or 9–10 on a 10-point scale.

Worked example: 500 post-support survey responses. 430 rate 4 or 5 out of 5. CSAT = 430/500 × 100 = 86%. Industry benchmark for customer support: 85–90% is typical for well-performing teams.

CSAT benchmarks

Scores by interaction type

Typical CSAT benchmarks: post-support interaction 80–90%; product satisfaction 75–90%; delivery/fulfilment 90–95%; onboarding 80–90%; billing enquiry 70–80%. The American Customer Satisfaction Index (ACSI) tracks national CSAT averages across sectors — e-commerce approximately 80, retail approximately 76, banks approximately 78, airlines approximately 73 (2023 data). Sector-specific benchmarks are more useful than absolute comparisons.

Business tips and best practices

Send the CSAT survey immediately after the interaction — within 1 hour for support contacts; same day for delivery; completion rates and accuracy both decline with delay.
Keep the survey short — 1–3 questions maximises response rate; add one optional free-text "why" question to understand the reasons behind scores.
Act on low CSAT scores quickly — a closed-loop process for low-scoring interactions prevents churn and demonstrates that feedback is taken seriously.

A 5-point CSAT improvement correlates with approximately a 3% increase in customer retention in service-heavy industries (Forrester research).
Customers who rate an interaction 5/5 are 4× more likely to repurchase than those who rate it 3/5 (Medallia benchmark data).

Common mistakes to avoid

Using a mean score rather than top-box percentage — the top-box CSAT % is more stable and comparable across time than an average rating.
Comparing CSAT across different scale lengths without normalising — a 4.2 on a 5-point scale is not equivalent to 8.4 on a 10-point scale.

Customer survey data must be collected and stored in compliance with applicable data protection law (GDPR, CCPA, etc.). Published CSAT claims in marketing must be accurate and representative — cherry-picking responses or selective publication may breach consumer protection regulations. This calculator is for internal planning purposes only.