Webinar No-Show Calculator: What Your Empty Seats Cost
Enter how many people registered and how many joined. The calculator shows your show-up and no-show rates, compares them with published platform averages, and estimates what the no-shows cost you.
The interactive tool loads in your browser. Free, no sign-up. You can also embed it on your own website: copy the embed code on this page.
How it works
- Show-up rate = attendees ÷ registrants × 100.
- No-show rate = 100 − show-up rate.
- Lost value = no-shows × the share of attendees who become leads × value per lead.
Published attendance benchmarks
- ON24 (2025): 60%, average registrant-to-attendee conversion on ON24's platform
- Livestorm (2025): 51.3%, average attendance rate on Livestorm's platform
- Demio (Banzai) (2022): 38%, average live-session attendance on Demio
Frequently asked questions
What is a good webinar show-up rate?
Published platform averages range from about 38% (Demio/Banzai, live sessions, 2022) to 51.3% (Livestorm) and 60% (ON24, 2025). Compare each webinar against your own previous ones first.
Why do people register for webinars and not show up?
Common reasons are forgetting, a clash with work, losing the join link, or the topic feeling less urgent on the day. A reminder plan that builds interest and sends the join link at the right time addresses most of them.
How do I reduce webinar no-shows?
Start reminders earlier, use more than one channel, send the join link an hour before, add a calendar invite on registration, and follow up with no-shows with the replay.
Read next: How to increase webinar attendance
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