Unit Converter - Convert Length, Weight, Temperature & More

Result
0.1Centimeter (cm)

How to Convert Units

Select a category (Length, Weight, Temperature, etc.) using the tabs at the top. Enter a numeric value, choose your source unit in the “From” dropdown, and select the target unit in the “To” dropdown. The result updates in real time as you type. Use the swap button to quickly reverse the conversion direction.

Supported Unit Categories

Length

Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles. Whether you are converting a recipe measurement from metric to imperial or calculating distances for travel, every common length unit is covered.

Weight and Mass

Convert milligrams, grams, kilograms, ounces, pounds, and metric tons. Useful for cooking conversions, shipping weight calculations, and scientific measurements that span different unit systems.

Temperature

Convert between Celsius, Fahrenheit, and Kelvin. Temperature conversion uses formulas rather than simple multiplication, so the tool handles the offsets correctly. Common lookups include body temperature (37C = 98.6F), water boiling point (100C = 212F), and room temperature (20C = 68F).

Volume

Convert milliliters, liters, US cups, pints, quarts, gallons, and fluid ounces. Essential for cooking and baking when a recipe uses metric measurements but your measuring cups are imperial, or vice versa.

Area

Convert square millimeters through square kilometers, plus square feet, square yards, acres, and hectares. Useful for real estate, landscaping, and land surveying calculations.

Speed

Convert meters per second, kilometers per hour, miles per hour, and knots. Helpful for understanding weather reports, speed limits when traveling abroad, or nautical navigation.

Digital Data Storage

Convert bits, bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes. Uses binary prefixes where 1 KB equals 1024 bytes. Essential for understanding file sizes, storage capacity, and data transfer rates.

Time

Convert seconds, minutes, hours, days, weeks, months (average), and years (average). Useful for project planning, calculating durations, and converting between time scales.

Common Conversions People Search For

Many everyday situations require quick unit conversions. Here are some of the most frequently searched:

  • Inches to centimeters: 1 inch = 2.54 cm. Common for screen sizes and height measurements.
  • Pounds to kilograms: 1 lb = 0.4536 kg. Used for weight tracking and shipping.
  • Fahrenheit to Celsius: Subtract 32, then multiply by 5/9. Weather and cooking temperatures.
  • Miles to kilometers: 1 mile = 1.609 km. Driving distances when traveling internationally.
  • Cups to milliliters: 1 US cup = 236.6 ml. Recipe conversions in the kitchen.
  • Feet to meters: 1 ft = 0.3048 m. Height measurements and room dimensions.
  • Gallons to liters: 1 US gallon = 3.785 L. Fuel economy and liquid measurements.
  • Ounces to grams: 1 oz = 28.35 g. Cooking, postage, and small weight measurements.

Mobile-Friendly Design

This converter is built for mobile use. All inputs use a 16px font size to prevent auto-zoom on iOS devices. Buttons are sized for comfortable touch targets. The category tabs wrap naturally on narrow screens, and the from/to layout adapts to available width. Use it on your phone at the grocery store, in the kitchen, or while traveling.

Privacy and Offline Use

Every conversion calculation runs in your browser. No data is sent to any server, no account is required, and the tool works fully offline after the initial page load. Your input values are never stored or tracked.

Need to convert between number systems? The Number Base Converter handles binary, octal, decimal, and hexadecimal. Working with colors? The Color Converter converts between HEX, RGB, HSL, and more. For timestamp conversions, try the Unix Timestamp Converter.

Frequently Asked Questions

How accurate are the conversions?

All conversions use standard internationally recognized conversion factors. Length, weight, volume, area, and speed conversions are exact to the precision displayed. Temperature conversions use the standard formulas. Data storage uses binary prefixes (1 KB = 1024 bytes). Time conversions for months and years use average values (1 month = 30.44 days, 1 year = 365.25 days).

Does this unit converter work offline?

Yes. Once the page has loaded, all conversions run entirely in your browser with JavaScript. No internet connection is needed, and no data is sent to any server. This makes it ideal for quick conversions on the go.

Can I convert between metric and imperial units?

Yes. Every category supports both metric and imperial units where applicable. For example, you can convert meters to feet, kilograms to pounds, liters to gallons, Celsius to Fahrenheit, and square meters to acres. The tool handles all cross-system conversions.

How does the 'Show All Conversions' feature work?

When you toggle 'Show All Conversions', the tool displays a table showing your input value converted to every unit in the current category at once. This is useful when you want to see how a measurement compares across all available units without switching the dropdown multiple times.