Average Calculator | Mean, Median, Mode, Weighted Average & Trimmed Mean

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

Numbers

Separate values with commas, spaces or new lines.

Section 1: Enter values and weights

Values

These are the numbers being averaged.

Weights

Use the same number of weights as values.

Section 1: Enter values and trim level

Numbers

Useful when one or two extreme values distort the average.

Trim from each side (%)

Removes that share from the low end and high end.

Section 1: Compare several average methods on the same data

Numbers

See how mean, median and trimmed mean react to outliers.

Trim level (%)

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

Metric	Best for	Typical use	Common mistake
Mean	Balanced numeric datasets	Scores, measurements, finance	Ignoring outliers
Median	Skewed data	Income, home prices, salaries	Thinking it equals the mean
Mode	Frequency patterns	Survey answers, repeated values	Using it when values are all unique
Weighted average	Unequal importance	Grades, portfolio weights	Using plain mean instead
Trimmed mean	Outlier-heavy data	Robust summaries	Trimming 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.

Related Calculators

Percentage Calculator→ Percentage Change Calculator→ Unit Price Calculator→ Discount Calculator→ Percentage Increase / Decrease→

Related Guides

Mean vs Median vs Mode→ What Weighted Average Means→ How Outliers Change an Average→

⚡ What usually changes the answer

One extreme value can move the mean a lot.
The median is usually more stable when outliers exist.
The mode may not exist if no value repeats.
Weighted averages change when some values count more.
Trimmed mean is useful when you want a less sensitive center.

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. Use the result as a practical estimate, not as formal financial advice. The calculator depends on the numbers you enter and standard formula logic. Real outcomes can change because taxes, fees, timing, accounting treatment, market conditions, and business structure differ from simplified assumptions.

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. Use the result as a practical estimate, not as formal financial advice. The calculator depends on the numbers you enter and standard formula logic. Real outcomes can change because taxes, fees, timing, accounting treatment, market conditions, and business structure differ from simplified assumptions.

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. Use the result as a practical estimate, not as formal financial advice. The calculator depends on the numbers you enter and standard formula logic. Real outcomes can change because taxes, fees, timing, accounting treatment, market conditions, and business structure differ from simplified assumptions.

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. Use the result as a practical estimate, not as formal financial advice. The calculator depends on the numbers you enter and standard formula logic. Real outcomes can change because taxes, fees, timing, accounting treatment, market conditions, and business structure differ from simplified assumptions.

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. Use the result as a practical estimate, not as formal financial advice. The calculator depends on the numbers you enter and standard formula logic. Real outcomes can change because taxes, fees, timing, accounting treatment, market conditions, and business structure differ from simplified assumptions.

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. Use the result as a practical estimate, not as formal financial advice. The calculator depends on the numbers you enter and standard formula logic. Real outcomes can change because taxes, fees, timing, accounting treatment, market conditions, and business structure differ from simplified assumptions.