Event ROI Calculator
The return on a corporate event from the leads it generates — through opportunity and close rates to deals, revenue and margin — with the cost per lead and per attendee, and the deals needed to break even.
An event's value is the pipeline it starts.
How the event roi calculator works
An event's value is the pipeline it starts. Leads become opportunities at one rate and close at another; multiplied by the average deal and its margin, that is the gross return. Against the full cost of the event, the ROI follows — and so does the number of deals that would merely pay for it, which is the figure to watch during the follow-up.
Formula: deals = leads × opportunity rate × close rate; ROI = (deals × value × margin − cost) / cost
Worked examples
| Inputs | Return on investment | Note |
|---|---|---|
| 90 leads from a 60,000 event | -32.5% | about break-even |
| Bigger deals | 125% | a strong return |
| Weak follow-up | -77.5% | a loss |
FAQFrequently asked questions
How do I measure event ROI?
Through the pipeline: leads, the share that become real opportunities, the share of those that close, and the margin on each deal. Compare the expected margin with the full cost, not just the venue.
What counts as the cost?
Everything: venue, travel, staff time, production, sponsorship fees, giveaways and the follow-up campaign. Staff time is the item most often left out.
Why margin rather than revenue?
Because revenue is not what you keep. A 15,000 deal at 40% margin contributes 6,000, and that is what has to repay the event.
What conversion rates are realistic?
Twenty to forty per cent of qualified event leads become opportunities and 15 to 30 of those close, over six to twelve months. Track your own; the defaults are only a starting point.
What about value the pipeline does not capture?
Brand, customer retention, partner relationships and recruiting. Real but hard to count — state them separately rather than inflating the lead numbers.
Where these figures come from
- US FDA Food Code — food service guidance — holding and service context behind catering quantities
- UK Food Standards Agency — the UK food regulator
Last checked: September 2026. Portion and spacing figures are standard catering and event-industry conventions, stated on each page.