Free Online Calculator

A general-purpose math calculator that handles arithmetic operations, percentages, exponentiation, and simple algebra. It accepts expressions and multi-field inputs for flexibility.
Conceptually, input is parsed into tokens, an AST is built, and a deterministic evaluator applies standard operator precedence to produce a numeric result. The tool emphasizes precision, deterministic behavior, and consistent formatting.
Who benefits: students solving homework, engineers validating quick calculations, data analysts performing derived metrics, and developers embedding calculations into automation workflows.
Unique value: clean, dependency-free calculation core, configurable decimal precision, robust error handling (division by zero, invalid syntax, overflow) and straightforward export or reuse in other processes.