Unit Expression Converter
Convert between units using natural expressions (e.g., '5 km to miles').
About Unit Expression Converter
Unit Expression Converter lets you convert between physical units by typing natural-language expressions such as "5 km to miles", "72 F in Celsius", "100 kg to lbs", or "2.5 GB in MB" without memorizing conversion factors. It supports hundreds of units across length, mass, temperature, volume, area, speed, data size, time, pressure, energy, and more. The converter understands common abbreviations, plural forms, and unit names in multiple languages, making it accessible without prior knowledge of the exact unit symbol. It also displays the conversion formula used so you can learn and reproduce the calculation independently.
How to Use
Type a conversion expression in the input field using natural language, for example "100 kg to lbs", "5 miles in km", "32 F to C", or "1 TB in GB". The result appears instantly below the input. The tool recognizes both abbreviated symbols (km, lbs, F) and full names (kilometers, pounds, Fahrenheit). If the expression is ambiguous, a clarification prompt appears. Copy the numeric result or the full expression with units for use in documents or communication.
Common Use Cases
- Converting between metric and imperial units for international engineering projects, product specifications, and manufacturing drawings
- Translating temperature values between Fahrenheit, Celsius, and Kelvin for scientific calculations, recipes, and HVAC settings
- Converting data storage sizes between bytes, kilobytes, megabytes, gigabytes, and terabytes for storage capacity planning and billing
- Converting cooking measurement units between cups, milliliters, fluid ounces, and grams for recipe scaling and ingredient substitution
- Converting speed units between km/h, mph, m/s, and knots for travel planning, physics problem solving, and automotive contexts