Stop responses when full.
Use Google Forms' native response limit for a simple total cap. Use FormGuard when the full-form workflow also needs choice quotas, owner alerts, waitlist messaging, and a repeatable pre-launch test.
Quick answer
Google Forms now supports native form-level response limits. If that is all you need, start there. Use FormGuard when capacity control also needs choice quotas, owner alerts, waitlist messaging, or a guided copied-form test.
Three-part setup
Choose the response count that should close the form, using native Google Forms for a simple total limit.
Tell late visitors whether the form is full, closed, or moved to a waitlist.
Alert the operator when capacity is reached.
Good fit and boundary
RSVPs, workshops, classes, volunteer forms, and internal signups with lightweight capacity limits.
Google Forms is not a strict reservation, ticketing, payment, or inventory system. Use buffers for high-demand signups.
Next step
FAQ
Can Google Forms stop responses when full?
Yes for simple form-level limits: use the native Google Forms response limit. Use FormGuard when the workflow needs choice quotas, owner alerts, waitlist messaging, or a guided add-on setup.
Can I show a message after the form is full?
Yes. Use a closed-form message with one clear next step, such as a waitlist link.
Does this prevent all overbooking?
No. Google Forms is not transactional, so high-speed submissions may still need a buffer and manual confirmation.