Conversion Rate Calculator
Calculate conversion rate from visitors and conversions. Enter your total visitors and completed conversions to get the conversion rate, non-conversions, and the conversion ratio.
Input
Total number of visitors, sessions, or ad clicks for the period.
How many of those visitors completed the goal action (purchase, signup, lead, etc.).
Output
| Metric | Value |
|---|---|
| No data yet | |
More ways to use this tool
REST API
curl -X POST https://api.iotools.cloud/v1/tool/conversion-rate-calculator \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"visitors": "10000",
"conversions": "350"
}'Swap in your own key from your account. The tool's fields are the body — no wrapper.
Ask an AI agent
Use the IOTools `conversion-rate-calculator` tool (Conversion Rate Calculator) on this input:
YOUR_INPUT_HEREPaste this at any agent connected to the IOTools MCP server, then add your input.
Embed widget
<iframe
src="https://iotools.cloud/embed/conversion-rate-calculator/"
width="100%" height="520" frameborder="0" scrolling="no" loading="lazy"
title="Conversion Rate Calculator — iotools.cloud"
sandbox="allow-scripts allow-forms allow-same-origin allow-downloads allow-popups allow-popups-to-escape-sandbox"
allow="clipboard-write"
style="width:100%;border:1px solid #e5e7eb;border-radius:12px;overflow:hidden"></iframe>
<script src="https://iotools.cloud/embed.js" async></script>Drop this into your own page — free, no key required, just a link back.
| Cost per API/MCP call | From 5 credits |
|---|---|
| Need more credits? | View pricing |
Also available with
Guides
The Conversion Rate Calculator turns your visitor count and conversion count into the conversion rate every marketing dashboard reports — plus the non-conversion count and the raw ratio behind it.
The formula
Conversion Rate % = Conversions ÷ Visitors × 100
Non-Conversions = Visitors − Conversions
Conversion Ratio = Conversions / Visitors"Visitors" can be any denominator you're measuring against — site visitors, ad clicks, email opens, or sessions. "Conversions" is however many of them completed the goal you're tracking: a purchase, a signup, a lead form, a download.
How to use it
- Enter Visitors — the total audience for the period (visitors, clicks, sessions).
- Enter Conversions — how many of them completed the goal action.
Results update instantly as you type.
Reading the ratio
The conversion ratio (e.g. "350 / 10,000") is the same numbers behind the percentage, useful when reporting to someone who wants the raw counts rather than a rate — and it's the number to hand to a statistical-significance calculator if you're A/B testing.
What's a good conversion rate?
It depends entirely on the funnel stage and traffic source. E-commerce sites often see 1–4% for cold traffic; a well-targeted landing page with paid search intent can clear 10%+; email campaigns to an engaged list can go higher still. Track your own baseline over time rather than chasing an industry number — the trend matters more than the absolute figure.
Privacy
All calculations run entirely in your browser. Your traffic and conversion numbers are never uploaded or stored.