# Big Number Calculator

> Perform arithmetic on very large integers.

Page: https://askcalculators.com/calculator/big-number-calculator/
Definition: https://askcalculators.com/calculator/big-number-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/big-number-calculator/schema.json
Version: 7.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/big-number-calculator/?operation=%2B&num1=9007199254740991&num2=123456789

## Inputs
- operation: Operation; type=select; optional; default=+
- num1: Number 1; type=number; optional; default=9007199254740991
- num2: Number 2; type=number; optional; default=123456789

## Outputs
- result: Result; format=text; primary

## Formula
Integer arithmetic is performed with arbitrary-precision BigInt values.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.