Venues · Free Event Tool
Room Capacity Calculator
Estimate theater, classroom, banquet, boardroom, cocktail, and cabaret capacity from usable room area.
Event WorkspaceMy Event
Interactive tool
Build your working answer.
Change any input and review the output immediately. Data is processed locally in this browser.
How to use it
Turn inputs into an actionable plan.
- Open Event Workspace to set reusable event details such as dates, attendance, budget, currency, and venue.
- Enter the best information available today and review every visible assumption.
- Compare the result with contracts, team capacity, venue rules, and operational requirements.
- Save locally, print, copy, or export the result for owners and partners.
What the result means.
Capacity estimates are for early planning only. Venue layouts, obstructions, accessibility, stage dimensions, fire code, exits, and local regulations always override this estimate.
Planning tips.
- Start with the best information you have today, then save a new scenario as plans become more certain.
- Review the assumptions shown inside the tool instead of treating estimates as universal rules.
- Share the result with owners and vendors so everyone is planning from the same numbers.
Room Capacity Calculator FAQ
Is the Room Capacity Calculator free to use?
Yes. The Room Capacity Calculator is free to use without creating an account. Your inputs stay in your browser unless you choose to copy, print, export, or share them.
Can I save work from the Room Capacity Calculator?
Yes. Choose Save locally to store the current plan or scenario in this browser. The Event Workspace can also prefill relevant event dates, attendance, budget, currency, and operating details.
Should I treat the Room Capacity Calculator output as a final decision?
Capacity estimates are for early planning only. Venue layouts, obstructions, accessibility, stage dimensions, fire code, exits, and local regulations always override this estimate. Confirm final decisions with your event team, venue, suppliers, finance team, or qualified specialists where appropriate.