Free Conversion Rate Calculator

How this tool computes its result

Computes conversionRate as (conversions / visitors) * 100, revenuePerVisitor as revenue / visitors, and costPerConversion as cost / conversions, each guarded against division by zero. If you enable the funnel option, each step's rate is conversions / visitors for that step, and dropOff is the percentage of visitors lost versus the previous step: (previousVisitors - visitors) / previousVisitors * 100. The tool then scans all funnel steps for the single highest drop-off and, if it exceeds 20%, calls it out by name in the recommendations. Overall conversion rate is bucketed into four rule-based tiers (<1%, <2%, <5%, >=5%) that each produce different canned recommendations.

Worked example

Visitors = 10000, Conversions = 250, Revenue = 5000, Cost = 2000. conversionRate = 250/10000*100 = 2.5%, which falls in the '<5%' tier, so the tool shows 'Good conversion rate! You're performing above average.' revenuePerVisitor = 5000/10000 = $0.50, costPerConversion = 2000/250 = $8.00. Since costPerConversion ($8) is not more than 10x revenuePerVisitor ($5), the high-cost warning does not trigger.

When not to use this tool

Funnel analysis only activates when 'Analyze multi-step funnel' is checked and at least one step has visitors greater than zero — steps left at zero are silently filtered out of the drop-off calculation rather than flagged as incomplete. There is also no statistical significance test here; a 2.5% rate from 40 visitors and a 2.5% rate from 40,000 visitors are treated identically.

Common mistakes

• - Entering a Conversions value larger than Visitors — the tool does not validate conversions <= visitors, so it will happily report a conversion rate above 100% with no warning.
• - Filling in Cost but leaving Conversions at zero (or vice versa) and expecting costPerConversion to appear — it only renders when both cost and conversions are greater than zero.
• - Adding funnel steps with a visitors value of 0 — those steps are excluded from the processed funnel entirely, which can make a funnel look shorter than what was actually entered.

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