Average Calculator

What's the difference between mean, median, and mode?

The mean is the sum of values divided by the count (the common "average"); the median is the middle value when sorted; the mode is the most frequently occurring value. Each can be useful depending on your data.

When should I use median instead of mean?

Median is more resistant to outliers — for example, when calculating typical income or home prices, a few extreme values can skew the mean, so median often gives a more representative "typical" value.

How do I calculate a weighted average?

Multiply each value by its weight, sum those products, then divide by the sum of the weights — useful when some values should count more than others, like grades weighted by credit hours.

Is this tool free to use?

Yes, completely free with no signup, no limits and no software to install.

Is my data saved anywhere?

No — calculations run in your browser and the values you enter are not stored or sent to a server.

How many numbers can I average at once?

There's no strict limit — you can enter as many values as you need for your dataset.

Can I calculate the average of negative numbers?

Yes, negative values are included in the sum and count exactly like positive numbers, so the average correctly reflects a mix of positive and negative inputs.

Is this useful for calculating grade point averages (GPA)?

Basic averaging can help with unweighted grade averages, though GPA calculations often need weighted averaging based on credit hours — check whether that matches your school's specific formula.

What happens if I enter duplicate values?

Duplicate values are counted normally in the mean calculation — each entry contributes to both the sum and the count.

Can this calculate averages for decimal numbers?

Yes, decimal and fractional values are fully supported and calculated with standard precision.