Free Research Tools
Practical calculators and generators for researchers, product teams, and customer insight workflows.
Survey Analytics
Mean Score Calculator
Calculate mean, median, mode, standard deviation, and Likert interpretation from pasted data.
Research Planning
Sample Size Calculator
Get quantitative sample sizes with Cochran formula and qualitative study-size guidance.
Question Design
Interview Question Generator
Generate open-ended interview questions by goal, audience, and product context.
Customer Feedback
NPS Calculator
Compute NPS, eNPS, and tNPS with promoter/passive/detractor breakdowns and benchmarks.
Research Operations
Research Incentive Calculator
Estimate participant incentives and total study budget by study type, audience, and location.
Statistical Analysis
Correlation Calculator
Calculate Pearson r, Spearman rho, p-value, and evaluate causation evidence with a checklist.