- Define the eligible audience
Choose visitors, checkout starters, or trial users and use that same denominator for comparison.
- Set the measurement window
Allow enough time for the cohort to complete the intended conversion action.
- Enter eligible prospects
Count unique people or accounts that had a real opportunity to subscribe.
- Enter new paid subscribers
Count conversions from that same audience and period.
- Review the rate
Segment by channel or offer only when numerator and denominator remain matched.
Subscription Conversion Calculator
This calculator measures how many eligible visitors or trial users become paying subscribers.
Growth teams can apply it to a landing page, checkout funnel, or trial cohort, then compare conversion performance while keeping the audience definition and measurement window consistent.
Enter your values
Result
—
Subscription conversion rate
Non-converting prospects—
Subscribers per 1,000 prospects—
Conversion fraction—
Conversion rate = New paid subscribers ÷ Eligible prospects × 100
Subscribers per 1,000 = New paid subscribers ÷ Eligible prospects × 1,000
The numerator must be a subset of the denominator. This calculator measures acquisition conversion, not renewal or retention.
What the result means
The percentage shows the share of eligible prospects who became paid subscribers during the chosen window.
Tracking rules, cross-device identity, delayed conversions, and free-to-paid definitions can materially affect the reported rate.
Given
A meal-plan landing page receives 18,000 eligible visitors and attributes 630 new paid subscriptions to them.
Calculation
Conversion rate = 630 ÷ 18,000 × 100 = 3.50%.
Subscribers per 1,000 = 630 ÷ 18,000 × 1,000 = 35.
Result
The subscription conversion rate is 3.50%, equal to 35 subscribers per 1,000 eligible visitors.
Can trial users be the denominator?
Yes. Then the result is a trial-to-paid conversion rate, not a visitor-to-paid rate.
What if subscribers exceed prospects?
That indicates mismatched dates, duplicate conversions, or a different audience definition. The calculator flags this input.
How long should the conversion window be?
Use a window that reflects the buying cycle and keep it unchanged across comparisons.
Should renewals count as conversions?
No. Use only newly paid subscriptions when measuring acquisition conversion.
Why does analytics software show another rate?
Platforms may use sessions instead of users, different attribution windows, or modeled conversions. Align those definitions before comparing.