Productive ToolboxAverage Calculator
Free online Average Calculator to find the arithmetic mean of a list of numbers instantly. Paste values from Excel or CSV and get average, sum, count, min, and max in real time.
Average Calculator
Enter numbers separated by commas, spaces, or newlines to instantly calculate the arithmetic mean.
Average
0
Related tools
What This Average Calculator Does
Paste or type a list of numbers and the calculator returns the average (arithmetic mean) as you type, together with the count, sum, minimum, maximum, median, mode, range and standard deviation. Tick Weighted average to give values different weights. Values can be separated by commas, spaces, tabs or new lines, and figures like 1,000 or $25 are read as numbers, so a row or column copied from Excel or Google Sheets works as it is.
Use it for grades, prices, expenses, scores or measurements. The count is worth a glance: anything that is not a number, such as a header word, is skipped, so it tells you how many values were really averaged.
How to Find the Average
- 1Paste or type your numbers: Enter the values separated by commas, spaces or new lines, or paste a row or column from Excel or Google Sheets. Figures like 1,000 or $25 are read as numbers.
- 2Read the average and statistics: The mean appears as you type, with the count, sum, minimum, maximum, median, mode, range and standard deviation.
- 3Add weights if some values count more: Tick Weighted average and enter one weight per value in the same order, such as 0.6 and 0.4 for an exam and coursework; the weighted mean appears under the average.
- 4Copy or export: Copy all the results, or download your values with the count, sum, average, median and standard deviation as a CSV file.
The formula
Average = (x₁ + x₂ + … + xₙ) ÷ n
Example: 12, 18, 20 and 30 add up to 80. There are 4 numbers, so the average is 80 ÷ 4 = 20.
Mean, Median and Mode
"Average" usually means the mean, but it is not the only way to describe a typical value. For the numbers 2, 3, 3, 5, 7, 10, 40:
- Mean = 70 ÷ 7 = 10.00. The single large value, 40, pulls it up.
- Median = 5, the middle value of the sorted list. It ignores how extreme 40 is.
- Mode = 3, the value that appears most often.
When a few values are far from the rest, as with incomes or house prices, the median is often the fairer summary. When some values count more than others, such as a final exam worth 60% of a grade, tick Weighted average and enter the weights.
Frequently Asked Questions
How do you calculate an average?
Add all the numbers and divide by how many there are. For 4, 8, 15, 16, 23 and 42 the sum is 108 and there are 6 numbers, so the average (arithmetic mean) is 108 ÷ 6 = 18.
Is the average the same as the mean?
In everyday use, yes: "average" usually means the arithmetic mean. Statisticians also call the median and the mode averages, because each describes a typical value in a different way.
What is the difference between mean and median?
The mean adds everything and divides by the count; the median is the middle value once the list is sorted. One very large or small value pulls the mean but barely moves the median, which is why incomes and house prices are usually reported as medians.
How do I calculate a weighted average?
Multiply each value by its weight, add the results, and divide by the sum of the weights. A grade of 90 worth 60% and 80 worth 40% gives (90 × 0.6 + 80 × 0.4) ÷ 1.0 = 86. Tick Weighted average in the calculator and enter the weights in the same order as the values.
Can I paste data from Excel or Google Sheets?
Yes. Copy a row or a column and paste it into the box. Tabs, spaces, line breaks, semicolons and commas all separate values, numbers written with thousands separators such as 1,000 or 12,345.67 are read as one number, and a leading $, €, £ or a trailing % is ignored.
Can I export the result?
Yes. The CSV export downloads your numbered values followed by the count, sum, average, median and sample standard deviation, ready to open in a spreadsheet.
Is my data private?
Yes. We do not collect or store what you enter.
What is the difference between sample and population standard deviation?
Both measure how spread out the values are. Use the population figure, which divides by n, when your list is the whole group, such as every student in one class. Use the sample figure, which divides by n − 1, when your list is a sample from a larger group; it is slightly larger to allow for that.
Related Tools
Standard Deviation Calculator
Calculate sample and population standard deviation with variance, quartiles, mode, and histogram/box plot visualization.
Percentage Calculator
Find percentage, increase, decrease.
Meter to Kilometer Converter
Convert M to KM instantly.
Inch to Centimeter Converter
Convert Inches to CM.
Feet to Meters Converter
Convert feet to meters, including height in feet and inches.
Kilograms to Pounds Converter
Convert kg to lbs and back, with stones.
Grams to Ounces Converter
Convert grams to ounces for cooking.
Liters to Milliliters Converter
Convert liters to mL, cups and fluid ounces.
Scientific Calculator
Advanced scientific calculator with trig, logs, powers, and memory tools.
Fraction Calculator
Add, subtract, multiply, and divide fractions with automatic simplification.
Exponent Calculator
Calculate powers (x to the y) instantly with support for negative and fractional exponents.
Mortgage Calculator
Calculate monthly home loan payments.