Average Calculator
Paste a list of numbers and get the mean, median, mode, range, and standard deviation instantly, updated as you type.
Separate numbers with commas, spaces, or new lines. Everything is calculated in your browser. Nothing is uploaded.
Parsed 7 values
How to calculate the average of a list of numbers
Paste your numbers
Type or paste the numbers into the box, separated by commas, spaces, or new lines.
Read the statistics
The mean, median, mode, sum, count, min, max, range, and standard deviation appear automatically as a grid.
Adjust precision and copy
Pick how many decimal places to display, then copy the full summary to your clipboard with one click.
Why use this tool
Mean, median, and mode together
All three measures of central tendency are shown side by side, including every value when a list has more than one mode.
Full spread and totals
Count, sum, minimum, maximum, and range sit alongside the averages so you get the whole picture at a glance.
Population and sample standard deviation
Both variants are calculated, so you can use the population figure for a full data set or the sample figure for a subset.
Forgiving input parsing
Commas, spaces, tabs, and line breaks all work as separators, and any token that is not a number is skipped and counted for you.
Adjustable decimal precision
Round results to two, four, or six decimal places, or show the full value, without retyping anything.
Runs entirely in your browser
Everything happens on your device. The numbers you paste are never uploaded, stored, or logged.
About this tool
The average calculator turns a raw list of numbers into a full statistical summary. Paste values separated by commas, spaces, or new lines and it works out the three common averages at once: the mean, which is the sum divided by the count; the median, the middle value once the numbers are sorted; and the mode, the value or values that occur most often. When two or more values tie for most frequent the list is multimodal, and every mode is shown rather than just the first.
Alongside the averages you get the count of values parsed, their sum, the smallest and largest values, and the range between them. Standard deviation is reported in both forms. The population figure divides by the number of values and suits a complete data set, while the sample figure divides by one less and is the right choice when your numbers are a sample drawn from something larger. The sample figure needs at least two values, and any calculation that cannot be defined, such as a mode when every value is unique, is labelled clearly instead of showing a misleading number.
Parsing is deliberately forgiving. Numbers can be whole, decimal, or negative, and any token that is not a number, such as a stray label or a currency word, is ignored and tallied so you can see how many values were actually used. Everything runs in your browser as you type, and nothing is uploaded. For related jobs, the percentage calculator handles percentages and change, while the word frequency counter tallies how often each word appears in text.
Frequently asked questions
- What is the difference between mean, median, and mode?
- The mean is the sum of the values divided by how many there are. The median is the middle value once the numbers are sorted, or the average of the two middle values when the count is even. The mode is the value that appears most often. This tool shows all three at once so you can compare them.
- What happens if my list has more than one mode?
- Every value that ties for the highest frequency is listed. If all the values appear the same number of times, there is no mode and the tool says so rather than showing a value that is not meaningful.
- Which standard deviation should I use, population or sample?
- Use the population standard deviation when your list contains every value in the group you care about. Use the sample standard deviation when your numbers are a sample drawn from a larger group. The sample figure needs at least two values.
- How do I separate the numbers?
- Use commas, spaces, tabs, or new lines, in any mix. Numbers can be whole, decimal, or negative. Anything that is not a number is skipped, and the tool tells you how many tokens it ignored.
- Is my data uploaded anywhere?
- No. Everything runs in your browser; nothing is sent to a server. The numbers you paste are never uploaded, stored, or logged.
- How are the results rounded?
- You choose the display precision: two, four, or six decimal places, or the full value. Large numbers are shown with thousands separators, and the rounding affects only the display, not the underlying calculation.
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