Big Number Calculator

What this tool does

Calculate big number instantly in your browser. Integers only (BigInt has no fractions); division truncates toward zero and the remainder is shown separately.

How to use the Big Number Calculator

1. Enter or select first integer (any size).
2. Enter or select second integer.
3. Enter or select operation.
4. Read the calculated result; change any measurement to compare alternatives.

Formula

Arbitrary-precision integer arithmetic with BigInt: digits are never rounded away, so results with hundreds of digits stay exact.

a

First integer (any size)

b

Second integer

op

Operation

Integers only (BigInt has no fractions); division truncates toward zero and the remainder is shown separately.

Worked example

For big number calculator, the following measurements illustrate the exact method: First integer (any size): 12345678901234567890; Second integer: 987654321; Operation: add.

Results explained

Result

Result from the formula above. Integers only (BigInt has no fractions); division truncates toward zero and the remainder is shown separately.

Digits in result

Digits in result from the formula above. Integers only (BigInt has no fractions); division truncates toward zero and the remainder is shown separately.

Frequently asked questions