Survey Sample Size Calculator
How many young respondents you actually need for a defensible number, and how many invitations that takes once consent drop-off is counted.
A defensible youth survey needs about 384 responses for a 95% confidence level at ±5%, which means roughly 1,920 invitations at a 20% response rate — and parental consent for under-16s in most markets.
Survey Sample Size Calculator
Frequently asked
Is the Survey Sample Size Calculator free?
Yes. Every tool on AlphaBetaMinds is free, needs no account and has no usage limit.
Does this tool store what I type?
No. It runs entirely in your browser. Your inputs are never sent to our server, and nothing is logged.
How accurate is it?
It uses the McCrindle generation boundaries (Gen Alpha 2010–2024, Gen Beta 2025–2039) and UN World Population Prospects vital rates. Sources and formulas are on our methodology page.
Can I use the result in an article or report?
Yes, with a credit and a link back to this page. See our terms of use for the full licence.
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