Conversion Rate Calculator
Conversion rate is the share of visitors who do the thing — buy, sign up, book. Compute yours, and see what lifting it by one point would be worth, which is the business case for every optimization project.
How to use this calculator
- Enter conversions and visitors over the same period.
- Optionally add value per conversion to price the improvement scenarios.
- Use one consistent denominator (sessions or users) whenever you compare periods.
Formula used
Define both sides consistently: sessions vs unique users as denominator, and which action counts as conversion. Revenue per visitor (CR × value per conversion) often beats CR alone as a north-star, since it catches CR gains bought by discounting.
Example calculation
320 conversions from 14,500 visitors: CR = 2.21%.
Each percentage point equals 145 conversions — at 1,500 each, a lift from 2.21% to 3.21% is worth 217,500 in revenue. That's the budget-justification number for optimization work.
The leverage metric
Conversion rate is the multiplier on everything upstream: doubling CR halves your acquisition cost across every channel simultaneously, which no single ad optimization can do. That's why mature teams invest in landing pages, checkout friction and offer clarity — the gains compound with all traffic, paid and organic.
Averages deceive, though. Sitewide CR blends wildly different intents (blog readers vs pricing-page visitors), so segment before diagnosing — and remember that changes in traffic mix move sitewide CR with zero change in page performance.
Why use this calculator?
- Price the value of optimization before investing in it.
- Track revenue per visitor alongside CR to keep improvements honest.
- Translate relative lifts ("+10%") into absolute conversions and money.
Frequently asked questions
What is a good conversion rate?
E-commerce commonly runs 1.5–3%, lead-gen landing pages 5–15%, SaaS trial signups vary hugely by traffic source. Intent dominates: comparison-shopping visitors convert at multiples of cold social traffic. Benchmark against your own segments.
Should I use sessions or users as the denominator?
Either works if you're consistent. Sessions suit transactional funnels (each visit is a chance); users suit considered purchases with multi-visit journeys. Just never compare a sessions-based CR to a users-based one.
How do I know a CR change is real and not noise?
Small samples swing hard — 3 extra conversions on 200 visitors moves CR 1.5 points by luck alone. Use our A/B test significance calculator to check whether an observed difference clears statistical noise.