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Unit Converter | Length, Weight, Temperature, Volume & Pressure

Unit Converter | Length, Weight, Temperature, Volume & Pressure

Convert 49 units across eight categories—length, mass, temperature, speed, data, area, volume, and pressure—in your browser.

Focus mode
Unit converter
Choose a category and units, then enter a value for an immediate conversion. All calculations happen in your browser.
1 Meters (m) = 0.001 Kilometers (km)

Key features

  • Provides 49 units across eight categories: length, mass, temperature, speed, data, area, volume, and pressure.
  • Converts eight volume units, including mL, L, and US gallons, plus six pressure units from Pa to mmHg.
  • Applies dedicated formulas among Celsius, Fahrenheit, and Kelvin.
  • Swaps source and target units and formats results to up to 12 significant digits.

How to use

  1. Choose Length, Mass, Temperature, Speed, Data, Area, Volume, or Pressure.
  2. Set the source and target units and enter a number.
  3. Review and copy the live result.

Examples

  • Convert US recipe volumes

    Compare US teaspoons, tablespoons, cups, fluid ounces, or gallons with mL and L before scaling a recipe.

  • Match pressure readings

    Convert among Pa, kPa, bar, psi, atm, and mmHg when equipment and reference material use different units.

Privacy

Unit selection and numeric calculations run in your browser.

Requirements

Data units use 1 KB = 1024 bytes, and displayed results are rounded to the output precision.

Common questions

How many categories and units are included?
The converter includes 49 units in eight categories: length, mass, temperature, speed, data, area, volume, and pressure.
Does it convert US gallons to liters?
Yes. The volume category includes eight units, including US gallons and liters.

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