Free Trial Conversion Calculator
Trials started and the number that converted give your trial conversion rate and the new monthly revenue it produces — the core metric of any free-trial funnel. Your own counts.
How many trials turn into paying customers
The Free Trial Conversion Rate is calculated as (Number of Conversions / Number of Trials Started) × 100, expressed as a percentage. The New Monthly Revenue is then computed as Number of Conversions × Average Revenue Per User (ARPU) per month. In this context, 'Trials Started' refers to the total number of users who initiated a free trial within a given period (e.g., a month), and 'Conversions' are those who became paying customers by the end of the trial or within a defined conversion window. ARPU is the average monthly subscription fee paid by converted users. The conversion rate measures the efficiency of the trial funnel in turning prospects into customers, while the revenue metric quantifies the direct financial outcome. The calculation assumes that all conversions occur within the same period and that ARPU is constant; in practice, ARPU may vary by plan, so using a weighted average is more accurate. This formula is foundational because it directly links trial performance to revenue generation, enabling businesses to evaluate and optimize their acquisition strategies.
SaaS Startup: Project Management Tool
A project management SaaS company starts 500 free trials in January. By the end of the 14-day trial, 75 users convert to paid plans. The conversion rate is (75 / 500) × 100 = 15%. The average monthly subscription is $30 per user. The new monthly revenue from these conversions is 75 × $30 = $2,250.
E-commerce Subscription Box: Beauty Products
An e-commerce beauty box service offers a 7-day free trial. In February, 1,200 trials begin, and 240 convert to monthly subscriptions. The conversion rate is (240 / 1,200) × 100 = 20%. The average monthly box cost is $25. The new monthly recurring revenue is 240 × $25 = $6,000.
Online Course Platform: Professional Development
A professional development platform starts 800 free trials in March. After the 30-day trial, 120 users purchase a monthly membership. The conversion rate is (120 / 800) × 100 = 15%. The average monthly membership fee is $45. The new monthly revenue is 120 × $45 = $5,400.
A 'good' free trial conversion rate varies widely by industry, business model, and trial length. For SaaS, typical conversion rates range from 2% to 20%, with many B2B companies seeing 5-15% and B2C often lower. E-commerce subscription trials may convert at 10-30% if the product has high perceived value. The key principle is that conversion rate alone is insufficient; it must be paired with the cost of acquiring trials and the lifetime value of customers. A high conversion rate with low ARPU may yield less revenue than a moderate rate with high ARPU. Trends matter more than single data points—monitor changes over time and segment by traffic source or user behavior. Compare your rate to your own historical data and industry benchmarks from reputable sources (e.g., SaaS surveys), but avoid relying on generic averages. Focus on improving the trial experience to boost conversion, not just the headline number.
A common mistake is including trials that are still active in the denominator without waiting for the conversion window to close, which understates the rate. Another error is counting conversions that occur after a long delay (e.g., 60 days later) as if they happened in the same period, inflating the rate for that month. Edge cases include users who sign up for multiple trials—count only unique users. Also, failing to account for free trials that are automatically converted to paid (e.g., credit card required upfront) can skew the metric, as those are not true 'conversions' but rather opt-outs. Lastly, using an unweighted ARPU when users choose different plans leads to inaccurate revenue projections; always use a weighted average or segment by plan.
- Free Trial Conversion Rate
- The percentage of users who start a free trial and become paying customers within a defined period.
- Average Revenue Per User (ARPU)
- The total monthly subscription revenue divided by the number of paying users, providing a per-user revenue figure.
- Conversion Window
- The specific time frame after trial start during which a conversion is counted, typically aligned with trial length.
- Trial Funnel
- The process from trial sign-up to conversion, representing the steps users take before becoming customers.
- New Monthly Revenue
- The total recurring revenue generated from new conversions in a given month, calculated as conversions multiplied by ARPU.
How do I calculate trial conversion rate if trials have different lengths?
Use a consistent conversion window, such as 30 days from trial start, regardless of trial length, to ensure comparability.
Should I include trials that are still ongoing in the denominator?
No, only include trials that have completed their conversion window to avoid understating the rate.
What if a user converts after the trial ends but within a few days?
Include them if they fall within your defined conversion window; otherwise, exclude them from that period's calculation.
How do I handle users who upgrade from a free trial to a paid plan mid-trial?
Count them as conversions at the time they upgrade, using the trial start date for the denominator.
Is it better to calculate conversion rate based on users or accounts?
Use unique users or unique accounts consistently, depending on your business model, but avoid mixing the two.
What is a realistic trial conversion rate for a new business?
New businesses often see rates below 10% initially, but this can improve with optimization; focus on your own trend rather than a fixed number.
Does the formula work for annual subscriptions?
Yes, but convert annual revenue to a monthly equivalent by dividing by 12 for ARPU, or use monthly subscription value.
How do I account for trials that require a credit card upfront?
Treat them as trials; conversions are those who do not cancel before the trial ends, as they are automatically billed.
Lifting trial conversion is an onboarding + follow-up problem — both are built into the SaaS and membership kits.
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