Big Number Calculator

Operand A

Operation

Supported: +, −, ×, ÷, ^ (integer exponent), mod (integer modulo).

Operand B

Scale (decimal places)

Affects ÷ and ×/+/− rounding in output. Clamped to 0–50.

Drag & drop a small JSON/CSV config here, or to prefill.

JSON: {"a":"...","op":"+","b":"...","scale":10} | CSV line: a,op,b,scale

Big Number Calculator — Quick Cheat Sheet

Inputs: enter A and B as plain numbers (optional -, optional decimal .). Large digit counts OK.
Scale: sets decimal places in results (0–50). Affects division and formatted outputs.
Operations: +, -, *, /, ^ (integer exponent), mod (integer operands).
Precision engine: uses PHP BCMath if available; otherwise falls back to a safe string-math polyfill.
Examples: buttons above auto-fill realistic big inputs. Drag & drop JSON/CSV to prefill.
Notes: extremely large exponents may be slow; keep exponents moderate. Division by zero is blocked.

Drag & Drop formats