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.
Unit Conversion Reference Tables
Frequently searched unit conversion values at a glance. The tables cover imperial units such as inches, feet, and miles, Korean traditional units such as pyeong, geun, and ri, plus a Celsius to Fahrenheit quick chart, all using the same factors as the converter above. For values not listed, enter them in the converter to calculate up to 8 decimal places.
Length and Distance Conversions
| Unit | Converted Value | Everyday Context |
|---|---|---|
| 1 inch (in) | 2.54 cm | Monitor and TV screen sizes |
| 1 foot (ft) | 30.48 cm | Aircraft altitude, US height notation |
| 1 yard (yd) | approx. 0.914 m | Golf shot distances |
| 1 mile (mi) | approx. 1.609 km | US road signs, running records |
| 1 ri (里) | approx. 392.7 m | Ten ri is about 3.9 km |
| 5 ft 10 in | 177.8 cm | Example of US-style height |
Exact values are 0.9144 m per yard and 1,609.344 m per mile, the same basis used by the converter above.
Weight and Area Conversions
| Unit | Converted Value | Korean Everyday Context |
|---|---|---|
| 1 ounce (oz) | approx. 28.35 g | Coffee beans and perfume volumes |
| 1 pound (lb) | approx. 453.6 g | US groceries and body weight |
| 1 geun (斤) | 600 g | One geun of meat at Korean butcher shops |
| 1 pyeong (坪) | approx. 3.3058 m² | Korean real estate floor area |
| 84 m² exclusive area | approx. 25.4 pyeong | The most common Korean apartment size |
| 1 acre (ac) | approx. 4,047 m² | About 1,224 pyeong, farmland area |
| 1 hectare (ha) | 10,000 m² | About 3,025 pyeong, forestry and farm statistics |
Geun (斤) in this table is the 600 g standard used for meat; some goods use a different geun.
Celsius to Fahrenheit Quick Chart
| Celsius (°C) | Fahrenheit (°F) | Situation |
|---|---|---|
| 0°C | 32°F | Freezing point of water |
| 20°C | 68°F | Typical comfortable room temperature |
| 36.5°C | 97.7°F | Normal body temperature |
| approx. 37.8°C | 100°F | Commonly treated as a fever in the US |
| 100°C | 212°F | Boiling point of water at 1 atm |
| 180°C | 356°F | Common oven baking setting |
Fahrenheit = Celsius × 1.8 + 32, and Kelvin = Celsius + 273.15.
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.
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