Rex says
Everyday utility math — the kind you'd otherwise pull up four browser tabs for. I keep it to one clean answer.
Try a scenario
Click to load — tweak from there.Inputs
Result
Expected revenue
$26,083
ROI
422%
Opportunities created
18.2
Cost per opportunity
$274
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter registrations.
- 2Enter show rate (%).
- 3Enter attendee-to-opportunity (%).
- 4Enter average deal value ($).
- 5Enter close rate (%).
- 6Enter promotion + production cost ($).
- 7Read your expected revenue on the right — it updates as you type.
- 8Hit Share to keep the scenario or send it to someone.
About this calculator
Show rates make or break webinar economics. This runs registrations through attendance and conversion to pipeline value, then nets out promotion and production cost.
Worked example
Using the values the calculator loads with:
Inputs
- Registrations: 400
- Show rate: 38 %
- Attendee-to-opportunity: 12 %
- Average deal value: 6500 $
- Close rate: 22 %
- Promotion + production cost: 5000 $
Results
- Expected revenue: $26,083
- ROI: 422%
- Opportunities created: 18.2
- Cost per opportunity: $274
What each field means
Inputs
- Registrations
- The registrations used in the calculation. Starts at 400 so you have a working example on load.
- Show rate (%)
- The show rate used in the calculation, measured in %. Starts at 38 % so you have a working example on load. Accepted range: 1–100 %.
- Attendee-to-opportunity (%)
- The attendee-to-opportunity used in the calculation, measured in %. Starts at 12 % so you have a working example on load. Accepted range: 0.5–100 %.
- Average deal value ($)
- The average deal value used in the calculation, measured in $. Starts at 6500 $ so you have a working example on load.
- Close rate (%)
- The close rate used in the calculation, measured in %. Starts at 22 % so you have a working example on load. Accepted range: 1–100 %.
- Promotion + production cost ($)
- The promotion + production cost used in the calculation, measured in $. Starts at 5000 $ so you have a working example on load.
Results
- Expected revenue
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- ROI
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Opportunities created
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Cost per opportunity
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the webinar roi calculator work?
Show rates make or break webinar economics. This runs registrations through attendance and conversion to pipeline value, then nets out promotion and production cost. The underlying maths is: Revenue = registrations × show × conversion × close rate × deal value.
What do I need to enter?
6 values: registrations, show rate, attendee-to-opportunity, average deal value, close rate, and promotion + production cost. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the expected revenue result mean?
It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Estimates assume standard, average conditions — local rules, pricing, and materials vary.
Who is this tool for?
It's built for anyone doing everyday planning maths — a quick estimate that would otherwise need four browser tabs and a calculator app.
Accuracy and limitations
- Estimates assume standard, average conditions — local rules, pricing, and materials vary.
- Results are rounded for readability; add a buffer before ordering, booking, or committing.
- Double-check anything with a real cost attached against a local quote.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Webinar ROI Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/webinar-roi
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/webinar-roi" target="_blank" rel="noopener">Webinar ROI Calculator — RevenueLab</a> (2026).</p>
Source: [Webinar ROI Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/webinar-roi) (2026).