Angle Converter

The Angle Converter is a free online multi-unit conversion tool designed for students, engineers, builders, clinicians, and everyday users who need accurate results without spreadsheets. Unlike single-pair converters, this page converts your input into every supported unit at once, so you can compare kilograms with pounds, grams, stones, and tons in a single glance.

Unit conversion sits at the heart of science and trade. Historical systems grew regionally — imperial measures for length and volume, metric SI units for laboratory work, customary US measures for construction — and professionals still switch between them daily. A reliable converter reduces transcription errors, clarifies documentation, and speeds up homework, CAD take-offs, recipe scaling, and compliance checks.

What units are supported?

This converter currently supports: Degree, Radian, Gradian, Arcminute, Arcsecond. Factors are stored in the database so additional units can be added without changing the conversion engine. Linear quantities use a shared base unit (rad); temperature and fuel economy use dedicated formulas that preserve physical meaning.

Conversion approach

Most quantities are converted by normalizing to a base unit, then expanding to each target. Temperature uses Celsius as the intermediate scale. Fuel consumption converts through kilometres per litre so both “efficiency” units (km/L, MPG) and “consumption” units (L/100km) stay consistent. Data storage uses binary prefixes (1024) commonly expected by operating systems.

Practical applications include engineering design reviews, international shipping documents, classroom STEM worksheets, fitness and nutrition logs, HVAC pressure checks, and web typography sizing. Always confirm industry-specific conventions (for example US vs UK gallons, or decimal vs binary megabytes) before publishing critical values.

Results update live via AJAX while you type. Use Swap to reverse From/To, Copy to capture the multi-output panel, Print for worksheets, and Share to send a bookmarkable URL. Popular conversions and an auto-generated table help you sanity-check magnitudes at a glance.

1. Enter the numeric value you want to convert.
2. Choose the From unit and the highlighted To unit.
3. Watch the multi-output panel update every supported unit in real time.
4. Adjust precision or enable scientific notation for very large or tiny values.
5. Use Swap, Copy, Print, Share, or replay an item from Recent conversions.

Keyboard shortcuts: Enter convert, S swap, R reset (when focus is outside form fields).

• Try value 1 in the first unit to see baseline factors across the panel.
• Try value 10 to scale the conversion table and compare popular pairs.
• Swap From/To to verify the reverse conversion matches within rounding tolerance.