Range Formula Explained, With Examples
Every range result comes from one formula. Once you understand what goes into it, you can sanity-check any figure you are given, whether by an employer, a bank, a teacher or another website.
The formula
Range = max − min.
What each input means
- Numbers (separated by commas): the value you enter in the calculator.
Example
For example, with these inputs:
- Numbers (separated by commas): 12, 15, 9, 22, 15, 30
the calculator returns:
- Range: 21
Why it matters
These calculations come up in school, at work and in daily life, from PSLE and O-Level practice to measuring a room for new flooring. Doing them by hand builds understanding, and a calculator lets you check the answer instantly.
In everyday life the same maths shows up in discounts, recipe scaling, renovation measurements and comparing prices per unit. Being comfortable with it saves money and avoids costly measuring mistakes.
Calculators are best used to check working rather than replace it, especially for exams where method marks count. Work the problem by hand first, then confirm with the calculator.
Rounding is a common source of small errors. Keep full precision during intermediate steps and round only the final answer to the number of decimal places or significant figures the question asks for.
Related calculations
- Exponent Calculator: Raises a number to a power.
- Logarithm Calculator: Calculates logarithms in any base.
- Quadratic Equation Solver: Solves ax² + bx + c = 0.
- Pythagorean Theorem Calculator: Finds the hypotenuse of a right triangle.
Use the Range Calculator to plug in your own numbers.
Run your own numbers: Range Calculator