Range Calculator
Find the difference between max and min values
How to Use This Range Calculator
Enter your numbers
Type or paste your numbers separated by commas. You can include decimals and negative values.
Click Calculate
The calculator finds the minimum, maximum, and computes the range automatically.
Review the results
See the range value along with the minimum and maximum numbers from your set.
Understanding Range in Statistics
The range is the simplest measure of spread in a dataset. It tells you how far apart the smallest and largest values are.
A large range means your data is spread out. A small range means values cluster close together. The range is easy to calculate but sensitive to outliers — one extreme value can skew it.
Range Examples
Dataset: 5, 12, 3, 18, 7
Min=3, Max=18, Range=15
Dataset: 100, 95, 102, 98, 101
Min=95, Max=102, Range=7 (tight cluster)
Dataset: -10, 0, 5, 20, -5
Min=-10, Max=20, Range=30 (includes negatives)
Dataset: 2.5, 3.1, 2.8, 4.0, 3.5
Min=2.5, Max=4.0, Range=1.5 (decimals work)
When to Use Range
Quick data overview
Get an instant sense of data spread without complex calculations.
Quality control
Monitor process variation. A growing range may signal quality issues.
Comparing datasets
Compare spread across different groups or time periods quickly.
Frequently Asked Questions
What does range tell me about my data?
Range shows the total spread between your smallest and largest values. It gives a quick sense of variability but does not show how values are distributed in between.
Can range be negative?
No. Range is always zero or positive because you subtract the minimum from the maximum. Even with negative numbers in your dataset, the range itself is never negative.
What if all my numbers are the same?
The range is zero. This means there is no variation — every value equals the same number. This can happen in controlled processes or when measuring a constant.
How do outliers affect range?
Outliers have a large effect on range. One extreme value can make the range much larger than the typical spread. Consider using interquartile range (IQR) if outliers are a concern.
What is the difference between range and standard deviation?
Range uses only two values (min and max). Standard deviation considers every value and shows how much they typically deviate from the mean. Standard deviation is more robust but requires more calculation.
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