About the Number Comparison Calculator
Compare two numbers by difference, ratio and percentage change.
Also known as: compare two numbers, difference calculator, how much bigger, percentage comparison.
How to use this calculator
- Enter first number, second number.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
change % = (second − first) ÷ |first| × 100
Worked example
Using the values pre-filled in the calculator above:
- First number = 240
- Second number = 300
the calculator returns:
- Difference: 60
- Absolute difference: 60
- Percentage change: 25%
- Ratio: 1.25 : 1