Margin of Error Calculator
Calculate the margin of error for your survey results to understand the reliability of your data.
Margin of Error
0%
The true population value is likely within this range above or below your survey result.
How it works
The margin of error tells you how many percentage points your results will differ from the real population value.
- Confidence Level: How confident you are that the true value lies within the margin of error (usually 95%).
- Sample Size: The number of completed responses you received.
- Population Size: The total number of people in the group you are studying. Leave blank if the population is very large or unknown.