Average Calculator

Separate with commas, spaces, or new lines.

What is an Average Calculator?

An average calculator computes the key statistical measures for any set of numbers: mean, median, mode, minimum, maximum, and sum. Paste in a list and get a full picture of your data without needing a spreadsheet.

How It Works

Each measure is calculated differently:

Mean   = Sum of all values / Count
Median = Middle value when sorted
Mode   = Value(s) appearing most frequently

Example

Test scores: 72, 85, 85, 91, 64

  • Mean: 397 / 5 = 79.4
  • Median (sorted: 64, 72, 85, 85, 91): 85
  • Mode: 85 (appears twice)

Tips

  • Separate numbers with commas, spaces, or new lines. The calculator handles any mix.
  • Use median instead of mean when your data has outliers. A single extreme value can skew the mean significantly.
  • If all values appear equally often, there is no mode. The calculator displays "None" in that case.

Frequently Asked Questions

What is the difference between mean, median, and mode?

Mean is the arithmetic average: sum divided by count. Median is the middle value when all numbers are sorted. Mode is the value that appears most often. All three are measures of central tendency but behave differently with skewed or repeated data.

When should I use median instead of mean?

Use median when your data has outliers. Income is a classic example: a single very high earner in a dataset makes the mean look inflated even if most values are much lower. Median gives a more representative center.

Can there be more than one mode?

Yes. If two values appear equally often and more than any other, the dataset is bimodal and both are modes. If every value appears once, there is no mode.

How do I calculate a weighted average?

Multiply each value by its weight, sum all those products, then divide by the total weight. For grades: (quiz1 x 0.25) + (quiz2 x 0.25) + (final x 0.50). This calculator computes unweighted mean only.