How to use this conversion rate calculator
Enter the values requested above and select Calculate. Change any input to compare another scenario. The calculation runs locally in your browser and does not require an account.
Formula and method
Example
120 purchases from 4,000 sessions gives a 3% conversion rate.
Tips for a useful result
Keep the numerator and denominator aligned—for example, purchases per session or leads per click.
What this calculator is useful for
Calculate conversion rate from conversions and total visitors, sessions, leads or clicks. The result is intended for quick estimates, checking arithmetic and comparing scenarios. When a result affects a contract, tax filing, medical decision, building-code requirement or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
Frequently asked questions
What does the Conversion Rate Calculator calculate?
Calculate conversion rate from conversions and total visitors, sessions, leads or clicks.
How does the Conversion Rate Calculator work?
Conversion rate = conversions ÷ total opportunities × 100%.
Is the Conversion Rate Calculator free to use?
Yes. ERICH Calculators is free to use and does not require an account.