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Average Calculator Find mean, median, mode, weighted average and trimmed mean from your numbers
Basic average
Mean, median, mode
Weighted average
Values with weights
Trimmed mean
Reduce outlier effect
Compare methods
See the difference
Section 1: Enter your values
Separate values with commas, spaces or new lines.
Section 1: Enter values and weights
These are the numbers being averaged.
Use the same number of weights as values.
Section 1: Enter values and trim level
Useful when one or two extreme values distort the average.
%
Removes that share from the low end and high end.
Section 1: Compare several average methods on the same data
See how mean, median and trimmed mean react to outliers.
%
Used for the trimmed mean comparison.
Main result
primary answer
Median
middle value
Mode
most frequent value
Count
numbers used
Average comparison
Mean
Median
Trimmed / Weighted
Value summary
Metric Result Meaning Status
Average summary
Mode used
Numbers entered
Sum
Special setting
Main result
Median
Mode
Count
Plain answer
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What an average calculator actually tells you

An average calculator helps you find the center of a group of numbers, but the right center depends on the kind of data you have. The mean is the standard arithmetic average. The median is the middle value after sorting. The mode is the value that appears most often. A weighted average gives more importance to some values than others.

This matters because the wrong average can mislead you. A single outlier can pull the mean away from the rest of the data, while the median may stay stable. That is why this calculator lets you compare several methods instead of forcing one answer.

The core formula

Mean = Sum of all values ÷ Number of values
Median = Middle value after sorting
Mode = Most frequent value
Weighted average = Sum of (Value × Weight) ÷ Sum of weights
Trimmed mean = Mean after removing the same share from both ends
Use the mean for general datasets, the median when outliers matter, the mode for frequency patterns, and weighted average when some values should count more than others.

How to read the result

MetricBest forTypical useCommon mistake
MeanBalanced numeric datasetsScores, measurements, financeIgnoring outliers
MedianSkewed dataIncome, home prices, salariesThinking it equals the mean
ModeFrequency patternsSurvey answers, repeated valuesUsing it when values are all unique
Weighted averageUnequal importanceGrades, portfolio weightsUsing plain mean instead
Trimmed meanOutlier-heavy dataRobust summariesTrimming too aggressively

Why the mean is not always the best average

The mean uses every value fully, which is useful when the data is balanced. But if one very high or very low number is present, it can distort the result. In those cases, the median or trimmed mean often gives a better picture of the typical value.

This is why one average can never explain every dataset perfectly. Good analysis starts by asking what kind of distribution you have and whether any values deserve more influence than others.

Frequently Asked Questions

What is the difference between mean and median?+
The mean is the arithmetic average, found by adding all numbers and dividing by the count. The median is the middle value after sorting the numbers. The median is often better when one or two extreme values distort the mean.
When should I use weighted average instead of regular average?+
Use weighted average when some values matter more than others. This is common in grades, portfolio allocations, index calculations and multi-part score systems. A regular mean would treat every value equally, which can give the wrong answer in those cases.
What does trimmed mean do?+
Trimmed mean removes the same percentage of values from the low end and high end before calculating the average. It is useful when you want a central value that is less sensitive to extreme outliers but still based on most of the data.
Can a dataset have more than one mode?+
Yes. If two or more values appear most often and tie for the highest frequency, the dataset can be bimodal or multimodal. If no value repeats, there may be no mode at all.
Why do mean and median sometimes look very different?+
That usually happens when the data is skewed or contains an outlier. A very large or very small value can pull the mean away from the center of the rest of the numbers, while the median stays closer to the middle position.
What is the simplest way to enter values into this calculator?+
Paste them as comma-separated numbers, space-separated numbers or one number per line. The calculator reads all of those formats and converts them into a usable list automatically.