Big integer calculator
Add, subtract, multiply or divide integers without floating-point rounding.
Result
Enter your values. Your result will appear here.
How it works
- Inspect the example or enter your own input.
- Check the units and operation, then run the tool.
- Review the result, then copy or download it. Keep a copy of your original data.
Example & practical use
Starting example: First integer: 12345678901234567890 · Second integer: 9876543210
Limits and help
Up to 2,000 digits per operand. Integer division truncates toward zero and reports the remainder. Runs on your device without uploading input. Maximum 200,000 characters per field; numeric calculations use finite JavaScript numbers unless exact integer/decimal arithmetic is stated.
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Troubleshooting
Check the unit for each field. Use a decimal point without thousands separators in numeric fields. A blank value is not the same as zero. Verify important results independently.