Average Calculator
Quickly find your Average result with our free Average Calculator. Simple, fast, and accurate.
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Statistics
What is an Average Calculator?
An average calculator computes the mean of a set of numbers. It adds all the values together and divides by the count of values, giving you the central tendency of your data in seconds.
How to calculate average manually (the formula)
The formula for the mean (average) is: Mean = Sum of all values / Number of values. For the numbers 5, 8, 12, 12, 20, 7, the sum is 64 and the count is 6, so the mean is 64 ÷ 6 ≈ 10.67.
Example calculation
Find the average of 5, 8, 12, 12, 20, and 7. Sum = 5 + 8 + 12 + 12 + 20 + 7 = 64. Count = 6. Mean = 64 ÷ 6 = 10.67.
Common mistakes
- Confusing mean with median — The mean is the arithmetic average; the median is the middle value. They can differ significantly in skewed data.
- Forgetting to count correctly — Make sure you divide by the total number of values, not just the number of unique values.
- Including blank or invalid entries — Ensure all your inputs are numbers. Empty strings or special characters will be ignored.
Frequently asked questions
What is the mean (average)?
The mean is the sum of all values divided by the number of values.
How do I calculate the average?
Add up all the numbers, then divide by how many numbers there are.
What is the difference between mean, median, and mode?
Mean is the average. Median is the middle value. Mode is the most frequent.
Can I use this calculator for weighted averages?
No, this computes the simple arithmetic mean only.
What if my numbers are separated by commas?
The calculator accepts numbers separated by commas, spaces, or new lines.
Is this calculator free?
Yes, completely free with no sign-up.