You enter two numbers and choose an operation. For addition, subtraction, and multiplication, the tool uses JavaScript's native BigInt type, which handles integers of arbitrary length with perfect precision. Division uses standard floating-point math because BigInt only supports integer division, so very large quotients may lose precision.
There is no hard upper limit for addition, subtraction, and multiplication — BigInt supports integers with thousands of digits. However, your browser may slow down with extremely large inputs (millions of digits).
JavaScript's BigInt type only supports integer division (no decimals). To show a meaningful quotient, this tool converts to floating-point, which is limited to about 15–17 significant digits of precision.
BigInt operates on whole integers only. If you enter a decimal, the tool will either ignore the fractional part or show an error. For decimal arithmetic on large numbers, a specialized library is needed.
Standard JavaScript numbers (IEEE 754 double-precision) lose precision above 2^53, which is 9,007,199,254,740,992. Beyond that limit, consecutive integers can no longer be represented exactly. BigInt solves this by storing each digit explicitly.
Estimate only. Results reflect your inputs and standard formulas. Double-check important decisions independently.