Marketing
Conversion Rate Calculator
Calculate the conversion rate from the number of conversions and the total opportunities that produced them.
Total opportunities can be visitors, clicks, leads, prospects, sessions, or another relevant denominator.
Enter your values
Completed actions such as purchases, signups, or closed deals.
Visitors, clicks, leads, prospects, sessions, or another relevant denominator.
Results
Conversion rate
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Enter conversions and total opportunities.
Conversions
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Completed actions in the period.
Did not convert
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Opportunities that did not complete the action.
Results are estimates based on the values entered and are provided for general planning.
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Step by step
How to use the conversion rate
- Enter the number of Conversions completed.
- Enter the Total opportunities the conversions came from — visitors, leads, sessions, or another denominator you use consistently.
- Read the conversion rate and the number of opportunities that did not convert.
Method
How to calculate conversion rate
A conversion rate is the share of an eligible population that completed the action you care about. The denominator is whatever stage you are measuring from — sessions for a website, clicks for an ad, leads for a sales team, opportunities for a pipeline — and the numerator counts only conversions produced by that same population.
Formula
Conversion rate = Conversions ÷ Total opportunities × 100
Assumptions
- Conversions are drawn from the same population as the opportunities entered.
- Both figures cover the same period, channel, and conversion definition.
- Conversions cannot exceed total opportunities in this model; each opportunity converts at most once.
- Total opportunities must be greater than zero, so the rate is always finite.
The ratio is calculated at full precision before display. The rate displays two decimals; counts display as whole numbers.
How to interpret the result
Conversion rate is only meaningful in comparison: against your own history, against another variant, or against a comparable segment. Traffic source, device, intent, offer, and tracking changes all move the rate without the underlying experience changing. Treat a shift as a question to investigate rather than an answer in itself, and check volume alongside rate — a rate that rises while conversions fall usually means the denominator shrank.
Worked example: a lead funnel with two steps
A landing page receives 3,200 visitors and collects 96 leads, a 3.00% visitor-to-lead rate. Of those 96 leads, 12 become customers, a 12.50% lead-to-customer rate. Measured from the start, 12 ÷ 3,200 × 100 = 0.375% of visitors became customers. Calculating each step separately shows where the funnel loses the most people.
When to use it: comparing two page versions
Version A converts 50 of 2,000 visitors (2.50%) and version B converts 64 of 2,000 (3.20%). Use the same opportunity definition and period for both. With small numbers, a gap like this can come from chance, so collect enough visits before treating the difference as real.
Match the numerator to the denominator
A purchase rate should be measured against purchase-eligible sessions, and a sales close rate against qualified opportunities. Mixing stages — purchases over all sessions including support visits — produces a number that looks precise but measures nothing specific.
Write the definition down alongside the figure. Six months later, a rate without its definition cannot be compared to anything.
Rate, volume, and value together
Conversion rate says nothing about value. Doubling the rate by promoting a cheap entry product can reduce revenue if it displaces higher-value purchases.
Read rate alongside conversion volume and the average value of a conversion. All three moving in the same direction is a genuine improvement; only the rate moving usually means the mix changed.
Frequently asked questions
Which calculator do you need?
- Want the revenue returned per ad dollar behind those conversions? Use the ROAS Calculator.
- Need the cost of each conversion? Try the CPA Calculator.
- Looking at the click costs feeding the funnel? Use the CPC Calculator.
Keep calculating
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