Average Calculator

Purpose: Calculate the average (mean), median and sum of a list of numbers in one step.

Numbers

Average Calculator

The Average Calculator finds the arithmetic mean, median, and sum of any list of numbers, and can also compute a weighted average when some values matter more than others.

Mean vs weighted average

The ordinary mean adds all your numbers and divides by how many there are. A weighted average multiplies each value by its weight first - useful for a course grade where exams count more than quizzes, or a portfolio return where holdings differ in size. Enter values and weights and the tool handles the arithmetic.

When to prefer the median

If one or two figures are unusually large or small, the mean can be misleading. The median - the middle value - often describes the "typical" number better. The calculator reports both so you can compare them at a glance.

Frequently Asked Questions

How do I calculate a weighted average?

Multiply each value by its weight, add those products, and divide by the total of the weights. Enter the values and weights and the tool does this for you.

What is the difference between mean and median?

The mean is the sum divided by the count; the median is the middle value when sorted. The median resists outliers better.

Can I average grades with different credit hours?

Yes. Use the weighted average and set each grade's weight to its credit hours - the same idea as a GPA calculation.

How many numbers can I average?

You can enter long lists; separate values with commas, spaces, or new lines.