Tools
Free research & business tools
Calculators for the numbers researchers and marketers need most — no signup required.
Market Research
Sample Size Calculator
Work out how many survey responses you need for a given confidence level and margin of error.
Market Research
Margin of Error Calculator
Check the margin of error your existing sample size actually gives you.
Marketing & Product
NPS Calculator
Turn promoter, passive, and detractor counts into a Net Promoter Score, with benchmarks.
Marketing & Product
A/B Test Significance Calculator
Test whether a difference in conversion rate between two variants is statistically significant.
Marketing & Product
A/B Test Sample Size Calculator
Work out how many visitors per variant you need before running an A/B test, given the effect size you want to detect.
Market Research
TAM/SAM/SOM Calculator
Break a total addressable market down into what's realistically serviceable and obtainable.
Quant Research
Confidence Interval Calculator
Find the confidence interval around a sample mean, given its standard deviation and sample size.
Market Research
Survey Response Rate Calculator
Turn invitations sent and responses received into a response rate, with context on what's typical.