What is a Unit Converter?
The Unit Converter is a free online tool that converts various units across 12 categories in real-time, including length, weight, temperature, speed, area, volume, data, time, pressure, energy, power, and cooking. It supports both metric and imperial systems, as well as traditional Korean units like Ri, Geun, and Pyeong.
Whether you need miles-to-kilometers conversion for travel, cups-to-milliliters for cooking, or pascal-to-atmosphere for engineering, this tool handles all unit conversions in one place. Adjustable decimal precision and one-click copy make it easy to use.
Key Features
12 Categories Supported
Convert units across length, weight, temperature, speed, area, volume, data, time, pressure, energy, power, and cooking.
Traditional Korean Units
Includes Korean traditional units like Ri, Geun, and Pyeong that are commonly used in Korea.
Adjustable Decimal Precision
Set decimal places from 2 to 8 digits for precise conversions suited to your needs.
Real-time Conversion & One-click Copy
Results appear instantly as you type, and the copy button lets you quickly copy conversion results to your clipboard.
How to Use
- Select Category — Choose the unit category (length, weight, temperature, etc.) from the tabs.
- Enter Value — Type the number you want to convert in the input field.
- Select Units — Choose the source and target units from the dropdowns. Use the swap button to reverse direction.
- Check Result — View the real-time conversion result and use the copy button to copy to clipboard.
Use Cases
Engineering & Construction
Convert pressure (Pa/bar/atm), energy (J/cal/kWh), and power (W/kW/hp) units for design and simulations.
Cooking & Baking
Accurately convert measuring cups, tablespoons, teaspoons, and cc to follow recipes from any region.
Science & Research
Support precise conversions like Kelvin-Celsius temperature and energy unit calculations for experiments and papers.
Health & Fitness
Convert weight (kg/lb), distance (km/mi), and calories (cal/kcal) for exercise and diet management.
FAQ
Q. How many kilometers is 1 mile?
1 mile is approximately 1.609 km. To roughly convert miles to kilometers, multiply by 1.6.
Q. How do I convert Celsius to Fahrenheit?
Celsius to Fahrenheit: (Celsius × 9/5) + 32. For example, 25°C equals 77°F. Fahrenheit to Celsius: (Fahrenheit - 32) × 5/9.
Q. How many kilograms is 1 pound?
1 pound (lb) is approximately 0.454 kg. Conversely, 1 kg is approximately 2.2 pounds.
Q. How many centimeters is 1 inch?
1 inch is exactly 2.54 cm. This unit is commonly used for TV and monitor screen sizes.
Privacy Notice
All calculations in the Unit Converter are processed entirely in your browser. No input values or conversion results are ever sent to any server. Use it with confidence.