Average Calculator
Get mean, median, mode, range, and basic statistics from a list of numbers.
Written by Golam Rabbani, Founder & Lead Engineer
How to use this average calculator
- Enter your numbers in the Numbers field, separated by commas, spaces, or newlines.
- Press Calculate to compute the statistics.
- Read the result panel for mean, median, mode, min, max, range, sum, and count.
- Press Copy all stats to copy every result to your clipboard, or Reset to start over.
About this average calculator
The average calculator takes a list of numbers and returns eight descriptive statistics at once: mean, median, mode, minimum, maximum, range, sum, and count.
The mean is the sum of all values divided by the count. The median is the middle value of the sorted list — or the average of the two middle values when the count is even. The mode is the value or values that appear most often; if every number is unique, the tool shows "None" rather than inventing a mode. Range is the difference between the maximum and minimum values. All arithmetic runs locally in your browser with no server round-trip.
For example, enter 4, 8, 6, 8, 2 and the average calculator returns: Mean 5.600000, Median 6, Mode 8 (appears twice), Min 2, Max 8, Range 6, Sum 28, Count 5. This makes it practical for students checking homework, analysts doing a quick sanity check, and anyone who needs descriptive stats without opening a spreadsheet.
FAQ
- What does the average calculator compute?
- It computes eight statistics from your input: mean (arithmetic average), median, mode, minimum, maximum, range, sum, and count. All results appear together in a single result panel.
- What formula does the tool use to calculate the mean?
- Mean = sum of all values ÷ count of values. The median is found by sorting the list and taking the middle value, or averaging the two middle values for an even-length list.
- What does "Mode: None" mean?
- Mode is only shown when at least one value appears more than once. If every number in your list is unique, no single value is more frequent than any other, so the tool displays "None" rather than listing all values.
- What happens if I enter non-numeric text?
- The tool shows an error message asking you to enter valid numbers. It will not produce partial results — fix the invalid entry and press Calculate again.
- Does this tool store my numbers?
- No. The average calculator runs entirely in your browser; your numbers are never sent to a server, logged, or saved between visits. Closing or refreshing the page clears all input.
- Is the average calculator free?
- Yes. It is free to use with no signup, no account, and no usage limit.