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Validation & Research 5 mins Easy

Sample Size

Calculate and analyze Sample Size for your product.

5 mins
Time Est.
0
FAQs

Calculator

%
%

e.g., 20% means detecting a change from 3% to 3.6%

Probability of detecting a real effect

Sample Size Per Variant
visitors needed
Total Sample
both variants combined
Test Duration

Expected Timeline

Start
What you'll detect: A change from to (or higher)
Tip: Smaller MDE requires larger sample size. Choose the smallest effect that's business-meaningful.

Decision Guidance

What to do next?

  • If result is healthy, scale the channel immediately.
  • If borderline, optimize conversion rates before spending more.
  • If poor, pause spending and analyze customer acquisition funnel.

Industry Benchmarks

B2B SaaS $250 - $1,500
B2C App $5 - $50
E-commerce $10 - $100

Understanding Sample Size

Context & Usage

This tool helps you calculate Sample Size to make data-driven decisions.

When to use

Use this when you need to validate assumptions about...

Tool Guide

What Problem This Solves

Helps quantify important metrics for decision making.

When to Use

When you need data-backed validation.

When NOT to Use

When you have no initial data.

Data You'll Need

Basic input metrics.

What You'll Get

Clear actionable insights.

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