Conversion Rate Calculator

Calculate the percentage of visitors who completed a goal.

This tool runs entirely in your browser. Your files are never uploaded to a server.

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Conversion rate

What this calculator does

Divides the number of visitors who completed a goal (a purchase, sign-up or lead) by your total visitor count, giving you the conversion rate as a percentage.

How to use it

Enter your total visitors and the number of conversions in the same period. The conversion rate updates immediately as you type either value.

Worked example

With 5,000 visitors and 150 conversions (the pre-filled defaults), conversion rate = (150 ÷ 5,000) × 100 = 3% — 3 out of every 100 visitors completed the goal.

Formula

Conversion rate = (conversions ÷ visitors) × 100. The same formula applies whatever you define as a "conversion" — a purchase, a form submission, a demo request — as long as the numerator and denominator are measured over the same period and traffic.

Unique visitors vs. sessions

Using unique visitors as the denominator gives a more accurate per-person rate, since sessions can count the same returning person more than once and understate how many distinct people actually converted. Whichever you choose, stay consistent across periods so your trend line is comparing like with like.

Limitations

This tool takes visitors and conversions as given — it doesn't attribute which traffic source, device or campaign drove them, and a single blended rate can hide very different conversion rates between segments, such as mobile versus desktop, or paid versus organic. Break the numbers down by segment before concluding a page or funnel is under- or over-performing.

Scope, sources and privacy

Conversion rate is a standard web-analytics and e-commerce metric defined the same way across measurement platforms. The calculation runs entirely in your browser; the numbers you enter are never sent to a server.

Frequently Asked Questions

What's a good conversion rate?
Averages tend to sit around 2-5% for e-commerce, but it varies widely by industry, traffic source and offer.
Should I count unique visitors or total sessions?
Unique visitors give a more accurate per-person rate; sessions can double-count repeat visits from the same person.
How can I improve my conversion rate?
Test page copy and design, reduce friction in checkout or forms, and focus traffic acquisition on more qualified visitors.