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A/B Test Calculator

Lift. Confidence. ROI. Just the facts.

Statistically sound A/B testing that helps founders, marketers, and product teams calculate lift, confidence, and ROI in a single, crisp interaction.

Statistical Rigor

Two-proportion z-test methodology with proper confidence intervals and p-values. No guesswork, just math.

Instant Results

Calculate lift, significance, and ROI in milliseconds. Get clear recommendations without the analysis paralysis.

Clear Guidance

Know exactly when to ship, when to wait, and how many samples you need. Like consulting a growth analyst.

Built For Teams That Ship Fast

Designed for founders, marketers, and product teams who need answers, not spreadsheets

✓ Solo Founders

Validate marketing experiments without hiring a data analyst

✓ Growth Marketers

Test copy, ads, and landing pages with statistical confidence

✓ Product Teams

Analyze feature rollouts and UX changes with precision

✓ E-commerce Shops

Optimize checkout flows and product pages for maximum revenue

Ready to Run Your Test?

Calculate lift, statistical significance, and projected ROI in seconds

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