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Free Online Average Calculator
Average Calculator with Detailed Results
Calculate the arithmetic mean of any set of numbers. Get the average, sum, count, median, minimum, maximum and range instantly.
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Instant average
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Decimal support
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Negative numbers
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Detailed statistics
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Free Tool
Calculate Average
Enter two or more numbers below
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Browser-Based Calculation
Your calculations are performed directly in your browser. No sign-up is required.
Average Formula
How to Calculate an Average
Add all values together, then divide the total by the number of values.
Arithmetic Mean Formula
Average = Sum of Values ÷ Number of Values
Example
Find the average of 10, 20, 30, 40 and 50.
Step 1:
10 + 20 + 30 + 40 + 50 = 150
Step 2:
Number of values = 5
Step 3:
150 ÷ 5 = 30
Common Uses
What Can You Calculate?
Business Data
Calculate average sales, revenue, costs and performance values.
Data Analysis
Summarize numerical datasets with mean and supporting statistics.
Daily Tracking
Find average times, distances, measurements and repeated values.
Average Calculator Guide
Free Online Average Calculator
Our free online average calculator helps you find the arithmetic mean of a list of numbers quickly. Enter two or more values separated by commas, spaces or new lines, and the calculator will automatically determine the average.
In addition to the arithmetic average, this tool displays the sum, count, median, minimum value, maximum value and range. These extra statistics provide a useful overview of your numerical data.
What Is an Average?
In everyday mathematics, the word average commonly refers to the arithmetic mean. It is calculated by adding all values in a data set and dividing the result by the number of values.
For example, the average of 4, 8 and 12 is found by first calculating the sum, which is 24. Since there are three values, divide 24 by 3. The average is 8.
How to Find the Average of Numbers
To calculate an arithmetic average manually, first add every number in the data set. Next, count how many values are present. Finally, divide the sum by the count.
Average = Sum ÷ Count
Average vs Median
The average and median are both used to summarize numerical data, but they are calculated differently. The arithmetic average uses every value in the data set, while the median is the middle value after the numbers have been sorted.
If a data set contains unusually large or small values, the arithmetic average can be influenced by those values. In such situations, comparing the average with the median can provide additional context.
Can You Average Decimal Numbers?
Yes. Decimal values can be averaged using exactly the same formula. Add the decimal numbers together and divide the total by the number of values. This calculator accepts both whole numbers and decimal values.
Can You Average Negative Numbers?
Yes. Negative values can be included when calculating an arithmetic mean. Add all positive and negative values according to normal arithmetic rules, then divide the resulting sum by the total number of values.
What Is the Range of a Data Set?
The range measures the difference between the largest and smallest values in a data set. It is calculated using the formula maximum minus minimum.
Range = Maximum − Minimum
Why Use an Online Average Calculator?
An online average calculator is useful when working with many values, decimal numbers or mixed positive and negative data. It reduces manual arithmetic and provides supporting statistics that can help you understand the data set more clearly.
Important Note
This calculator is designed for general, educational and informational calculations. Verify critical results independently when accuracy is essential.
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FAQ
Frequently Asked Questions
Add all values together and divide the total
by the number of values in the data set.
Average equals the sum of all values divided
by the total number of values.
Yes. An arithmetic average can be a whole number,
decimal number or negative number.
Yes. Negative values are included using normal
arithmetic rules before dividing the sum
by the total count.
The arithmetic average is the sum divided by
the count. The median is the middle value
after sorting the data.