Online Number Arithmetic Calculator

Online Number Arithmetic Calculator

Apply one operation and one common operand independently to every number in a list. Supports +, −, ×, ÷ and remainder.

Use spaces, semicolons or newlines between complete finite decimal or scientific numbers. Commas can be decimal or grouping marks, depending on the page language. Text, fractions, non-finite numbers and nonzero inputs too small to represent are rejected.

Input must not exceed 100000 characters. Process at most 10000 numbers at once.

Results use the page decimal separator, no grouping and up to 15 significant digits. Computation uses JavaScript floating-point arithmetic, not exact decimal or arbitrary precision. Remainder (%) follows the dividend’s sign and can show -0. A nonzero operand that underflows, or a nonzero multiplication/division result that becomes zero, is rejected. Invalid input, zero division/remainder or non-finite results reject the entire run.