Perform addition, subtraction, multiplication, division or exponentiation on whole numbers of any size, with full precision and no rounding errors.
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Standard calculators and even JavaScript's regular numbers lose precision beyond about 15-17 significant digits. This calculator uses arbitrary-precision integer arithmetic instead, so numbers with hundreds or even thousands of digits are calculated exactly, with no rounding or precision loss.
Only whole numbers (no decimals) are supported, and division returns an integer quotient plus a remainder rather than a decimal result, since converting an arbitrary-precision division into a decimal would reintroduce the precision limits this tool is designed to avoid.
Multiplying 123456789123456789 by 987654321987654321, two 18-digit numbers well beyond the roughly 15-17 digits of precision a regular calculator or JavaScript number can handle exactly, gives exactly 121932631356500531347203169112635269, a full 36-digit result with no rounding error.
Entering a decimal point or other non-digit characters, this calculator only accepts whole numbers (optionally with a leading minus sign for negatives), a decimal point or comma will be rejected.
Expecting a decimal result from division, division here returns a whole-number quotient plus a separate remainder, not a decimal, since a full-precision decimal could require infinitely many digits to represent exactly.
Using a regular calculator or spreadsheet to double-check a very large result and finding it doesn't match, standard calculators and spreadsheet software silently lose precision beyond about 15-17 significant digits, this tool is specifically built to avoid that rounding.
This calculator works with exact whole numbers of unlimited size. A decimal result could require infinite digits to represent exactly, so division instead returns a whole-number quotient and the remainder.
This calculator supports numbers up to 2,000 digits, and results from multiplication or exponentiation are capped at 2,000 digits as well, to keep calculations fast in your browser.
No, only whole numbers (integers) are supported, positive or negative, with no decimal point.
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