Value Metric
Trial Start Rate
Trial Start Rate is the percentage of eligible users who begin a product trial.
What is Trial Start Rate?
Trial Start Rate measures how many eligible visitors or signups actually begin a trial of your product. It captures intent at the top of a product-led funnel: the willingness to invest time in evaluating your product before paying.
A low trial start rate points to friction or unclear value before the trial even begins; a healthy one feeds the free-to-paid conversion step that follows.
How to calculate it
Trial Start Rate = Trials Started ÷ Eligible Users × 100
- Trials Started
- Users who began a trial in the period
- Eligible Users
- Visitors or signups eligible to start a trial
Worked example
If 800 of 5,000 signups start a trial, the trial start rate is 800 ÷ 5,000 × 100 = 16%.
What good looks like
- DirectionalModel-dependent
Opt-out trials (no explicit start) show near-100% starts but lower quality; opt-in trials show lower starts but higher intent. Compare within your model.
Why it matters
Trial starts are the fuel for the rest of a product-led funnel — no trial, no chance to convert. Watching where eligible users drop before starting reveals whether your value proposition, pricing clarity, or signup friction is the bottleneck, and improving it lifts every downstream conversion step.
How to improve Trial Start Rate
Clarify value before the trial
Make the promise and the "what happens next" obvious so starting a trial feels low-risk.
Remove pre-trial friction
Minimize the steps and information required to start, and consider whether a card requirement is helping or hurting.
Frequently asked questions
What counts as the start of a trial?
Define it as the first deliberate action that begins the evaluation period — clicking "Start trial," entering the product, or completing setup. Be consistent, because opt-in and opt-out trial models produce very different start rates.
Should trials require a credit card?
Requiring a card lowers trial start rate but raises the free-to-paid conversion of those who start, because intent is higher. The right choice depends on whether you optimize for funnel volume or downstream conversion — test both.