Range Calculator
Finds the spread between the largest and smallest value.
Result
- Range
- 21
How to use the range calculator
- Enter the numbers (separated by commas).
- The results update as you type, or press Calculate.
- Read the range first, then the supporting figures below it.
Formula
Range = max − min.
Worked example
For example, with these inputs:
- Numbers (separated by commas): 12, 15, 9, 22, 15, 30
the calculator returns:
- Range: 21
Background
These calculations appear throughout the Singapore syllabus, from primary school percentages and fractions to secondary school algebra and geometry. Understanding the formula makes problem sums easier because you can recognise which quantity is missing.
A quick mental estimate before calculating is a powerful check. If a room's floor area comes out at 4,000 square metres or a percentage comes out above 100% when it should not, you know to look again.
Frequently asked questions
How does the range calculator work?
It applies this formula: Range = max − min.
Can I use any units?
Yes, as long as every input uses the same unit. The answer will be in that unit (squared for areas, cubed for volumes).