Average Calculator
This free average calculator returns the mean, median, mode, min, max, range and sum of any list of numbers, and switches to a weighted average when you add weights.
Leave empty for a simple average. One weight per value for a weighted average.
Mean (average)
87.2
| Mean (average) | 87.2 |
|---|---|
| Median | 88 |
| Mode(s) | none |
| Minimum | 78 |
| Maximum | 95 |
| Range | 17 |
| Sum | 436 |
| Count | 5 |
Examples
How to use
- 1
Paste or type your numbers, separated by commas, spaces or new lines.
- 2
Optionally add one weight per value to get a weighted average.
- 3
Read the mean, median, mode, min, max, range and sum in the table, updated live.
- 4
Copy or download the full stats table with the buttons under the tool.
Mean, median or mode: which average do you need?
The three classic averages answer different questions. The mean adds everything and divides by the count. The median is the middle value once the list is sorted. The mode is the value that shows up most often. For the test scores 84, 91, 78, 88 and 95, the mean is 436 ÷ 5 = 87.2 and the median is 88; no score repeats, so there is no mode.
What each stat in the table means
| Stat | What it tells you | Example (84, 91, 78, 88, 95) |
|---|---|---|
| Mean | Sum divided by count | 87.2 |
| Median | Middle of the sorted list | 88 |
| Mode | Most frequent value(s) | none |
| Min / Max | Smallest and largest values | 78 / 95 |
| Range | Max minus min | 17 |
| Sum / Count | Total and number of values | 436 / 5 |
How does a weighted average change the result?
In most grading systems, an exam outweighs a quiz. A weighted average multiplies each value by its weight, adds the products, then divides by the sum of the weights. Take grades 92, 85 and 88 weighted 30, 30 and 40: (92 × 30 + 85 × 30 + 88 × 40) ÷ 100 = 8830 ÷ 100 = 88.3. Weights need not total 100; hours, credits or any positive coefficients behave the same way.
When should I trust the median over the mean?
The mean bends toward outliers, the median holds steady. Line up five salaries: 42,000, 45,000, 48,000, 51,000 and 250,000. The mean lands at 87,200, a figure nobody in the group earns, while the median of 48,000 describes the team far better. Whenever a list carries extreme values, read both numbers and keep the one that answers your question.
What does the range tell me about spread?
The range, max minus min, is the quickest read on how scattered your numbers are. Two classes can share a mean of 87.2 while one runs from 78 to 95 (range 17) and the other from 45 to 99 (range 54): same average, very different stories. Reading the range next to the mean stops you from selling a volatile list as one tidy number.
What number formats can I paste?
Separate your numbers with commas, semicolons, spaces or line breaks, whatever your source uses. A trailing comma or a stray word will not break the calculation: non-numeric tokens are skipped, so a messy column pasted from a spreadsheet still returns your stats. Negative values and decimals both work, and on an even count the median is the mean of the two middle values: for 1, 2, 3, 4 it is 2.5.
Parameters
Every field of this tool can be prefilled from the URL. Use these query parameters:
| Parameter | Type | Default |
|---|---|---|
| values | string | 84, 91, 78, 88, 95 |
| weights | string |
Example : https://www.veltotools.com/math/average-calculator?values=84%2C+91%2C+78%2C+88%2C+95
API
The same tool is available as a free JSON API, with the same parameters as above. No key, no sign-up.
Frequently asked questions
Updated Jul 17, 2026