Free survey calculators
Instant, accurate calculators for the numbers behind your surveys — each with the formula and what the result actually means. No signup required, and your inputs never leave your browser.
NPS Calculator
Compute your Net Promoter Score from promoter, passive and detractor counts.
Open calculatorCSAT Calculator
Compute your Customer Satisfaction Score from satisfied response counts.
Open calculatorEmployee Engagement Score Calculator
Compute your percent-favorable engagement score from survey response counts.
Open calculatorCES Calculator
Compute your average Customer Effort Score on any scale.
Open calculatorSurvey Response Rate Calculator
Work out what share of invited people completed your survey.
Open calculatorSurvey Sample Size Calculator
Find how many responses you need for reliable conclusions.
Open calculatorSurvey Margin of Error Calculator
See how much uncertainty your survey results carry.
Open calculatorOnboarding Health Score Calculator
Turn onboarding survey scores into an overall health percentage with strengths and risk areas.
Open calculatorLooking for the thinking behind these numbers? Browse the survey resources and guides for practical advice on NPS, CSAT, churn surveys and feedback analysis.