How to use the Big Number Calculator
The big number calculator does exact arithmetic on very large whole numbers.
Open the Big Number Calculator →
What you need to enter
- Number A
- Operation
- Number B
The formula
It uses arbitrary-precision integers, so no digits are lost.
Worked example
Using the default values in the calculator:
- Number A: 123456789012345678901234567890
- Operation: +
- Number B: 987654321
| Result | 123456789012345678902222222211 |
| Digits | 30 |
Tips for better results
- Use whole numbers only.
- Powers are limited to 10,000.
Common mistakes to avoid
- Entering decimals.
- Expecting floating-point rounding.