Voice Calculator

Overview: The Voice Calculator accepts spoken expressions and returns precise arithmetic results. It is designed for students, field workers, technicians, and professionals who benefit from hands-free calculations during experiments, measurements, or quick mental math tasks. By interpreting natural language math phrases, it preserves standard arithmetic semantics and delivers results promptly.
Conceptual workflow: Speech is transcribed to text, then normalized to mathematical tokens. A parser builds an AST encoding operator precedence and parentheses, which is evaluated numerically. Synonyms are mapped to operators (plus/add, minus/subtract, times/multiply, divided by). It supports basic operators, parentheses, and exponentiation. Output is a numeric value formatted with fixed precision.
Audience, differentiators, and use cases: Ideal for classrooms, workshops, laboratories, and remote work where typing is impractical. Differentiators include voice-first input, low latency, locale-aware parsing, and robust fallback to text. Use cases include quick sums, expressions like 'two hundred minus fifty' and 'ten times four plus six'. The tool emphasizes accuracy, deterministic parsing, and structured error codes.