Average Calculator
This average calculator takes a list of numbers separated by commas, spaces or new lines and returns the mean, median, mode, sum, count, min, max, range and population standard deviation.
Mean, median and mode.
How to use Average Calculator
- Paste your numbers separated by commas, spaces, or new lines
- Read the mean, median, mode, and full statistics instantly
- Ignore stray non-numeric tokens; they are skipped automatically
About Average Calculator
The Average Calculator takes any list of numbers — typed, or pasted from a spreadsheet column — separated by commas, spaces, tabs or new lines, and instantly returns the mean along with the count, sum, median, mode, minimum, maximum, range and population standard deviation. Non-numeric tokens are ignored, so a messy paste of grades, weekly body weights or fuel-economy readings still averages cleanly without you scrubbing it first.
It answers the everyday "what's the average of these numbers" question: average your test scores or class grades, average a month of daily weigh-ins, or average your mpg across several fill-ups. Because it reports the median and mode next to the mean, you can also see whether one outlier is dragging your average up or down.
One thing to know: this is a plain arithmetic average, so every value counts equally. It does not apply weights, so a weighted grade average — where a final exam counts more than a quiz — needs you to enter each score as many times as its weight, or use a dedicated weighted tool. It also is not a growth-rate (CAGR) or life-expectancy calculator; it averages the numbers you give it rather than projecting or compounding them.
Results recalculate on every keystroke, and every figure is shown to four decimal places while the math runs at full precision. It is completely free with no sign-up, and it runs entirely in your browser — your numbers are never uploaded to a server, so your data stays private.
Frequently asked questions
- How should I separate the numbers I paste?
- Commas, spaces, tabs and new lines, in any mix — "12, 7, 22" and "12 7 22" across several lines behave identically. Semicolons are not separators: "4;9" is treated as one token, fails to parse, and is skipped.
- What happens to text, currency symbols or percent signs?
- Any token that cannot be read as a finite number is dropped, and the note under the results tells you how many were skipped. That includes "$12" and "45%", so strip symbols before pasting; scientific notation such as 1e3 is understood and counts as 1000.
- Which statistics does it report?
- Count, sum, mean, median, mode, minimum, maximum, range and the standard deviation, with the mean repeated as the headline figure above the grid.
- Is the standard deviation for a population or a sample?
- Population: the squared differences from the mean are divided by the full count of values, not by count minus one. If you need the sample estimate, you will have to adjust the result yourself.
- Why does Mode show a dash?
- Because there is no single most-frequent value — either nothing repeats, or every distinct value appears exactly as often as the others, as in 1, 1, 2, 2. When several values tie for the top but others are rarer, all the tied values are listed together.
- How is the median found with an even count of numbers?
- The values are sorted and the two middle ones are averaged. For 7, 12, 15, 22 the median is 13.5, which sits between the two middle values rather than being one of your numbers.
- How are the results rounded?
- Every figure is shown to at most four decimal places, with thousands separators for readability. The rounding is display-only — the mean, standard deviation and the rest are calculated at full precision.
- Is there a limit on how many numbers I can paste?
- There is no fixed cap on the input box, and the whole set is re-analysed on every keystroke, so results appear as you type or the moment you paste. Very large lists are limited only by your own device.
- Can I use it as a grade average calculator, including weighted grades?
- Yes for a straight grade average — paste your scores and the mean is your average grade. It does not weight anything, though, so if a final exam counts more than a quiz, either enter each score as many times as its weight (a 30% exam three times, a 10% quiz once) or use a dedicated weighted-average tool. The unweighted mean assumes every grade carries equal weight.
- Can I average my body weight over time?
- Yes. Paste a column of weigh-ins — daily, weekly or monthly — and the mean is your average weight for that stretch, while the min, max and range show how much it moved. Mixing pounds and kilograms would give a meaningless average, so keep every entry in one unit.
- Can it work out my fuel or gas mileage average?
- If you already have per-tank mpg or L/100km figures, paste them and the mean is your average economy. It averages the numbers as given and does not divide total miles by total gallons, so for a true lifetime figure work out each tank's mileage first, then average those. Keep every value in the same unit.
- Is this an average lifespan or life expectancy calculator?
- No — it does not predict how long a person, pet or product will last from actuarial tables. It simply averages numbers you type, so you can find the mean of a set of ages or lifespans you already have, but it will not estimate a life expectancy on its own.
- Does it calculate compound average growth rate (CAGR)?
- No. CAGR is a geometric, compounding figure that depends on a start value, an end value and the number of periods, whereas this tool returns the plain arithmetic mean of whatever you paste. Averaging a list of yearly growth percentages here would overstate real compounded growth, so use a dedicated CAGR calculator for that.
- Can it find an average gradient or slope?
- It can average a list of gradient or slope values you already have, but it will not derive a gradient from two points or a rise over a run. Paste the individual gradients and the mean is their average; if you need slope from coordinates, calculate each one first.