Ctrl + K
Converters

Unit Converter

Convert between different units of length, weight, temperature, area, volume, and time.

1 km = 1000.00 m

All conversions are approximate
Common Conversions
kmm
1 km1000 m
2 km2000 m
5 km5000 m
10 km10000 m
25 km25000 m
50 km50000 m
100 km100000 m
500 km500000 m
1000 km1000000 m

All conversions happen locally in your browser. No data is sent to any server. Conversion factors use international standard definitions.

Whether you are converting kilometers to miles for a road trip, Celsius to Fahrenheit for a recipe, or gigabytes to mebibytes for storage planning, our online unit converter provides fast, accurate conversions across eight measurement categories. Every conversion uses internationally recognized standard factors and runs entirely in your browser.

Supported Conversion Categories

Length

11 units · km to nmi

Weight

10 units · t to st

Temperature

3 units · °C to K

Area

10 units · km² to in²

Volume

13 units · m³ to in³

Time

10 units · yr to ns

Speed

5 units · km/h to kn

Data Storage

11 units · bit to PB

How to Use the Converter

  1. Select a category — Choose from Length, Weight, Temperature, Area, Volume, Time, Speed, or Data Storage.
  2. Choose your units — Pick the source unit in the "From" dropdown and the target unit in the "To" dropdown.
  3. Enter a value — Type any number in the input field. The conversion updates instantly as you type.
  4. Swap units — Click the swap button (↑↓) to reverse the conversion direction.
  5. Copy the result — Use the Copy button to grab the converted value.

Key Features

  • 8 Conversion Categories

    Covering length, weight, temperature, area, volume, time, speed, and data storage with 68+ units across all systems.

  • Real-Time Updates

    Conversion results update instantly as you type. No button clicking needed — see the converted value immediately.

  • Swap Button

    Quickly reverse the conversion direction with a single click. Perfect for checking both ways without re-selecting units.

  • Metric & Imperial Systems

    Both metric and imperial/US customary units are included, with precise conversion factors based on international standards.

  • Common Conversions Table

    A reference table shows frequently used conversion pairs for each category, providing quick lookups at a glance.

  • 100% Private

    All conversions happen locally in your browser. Your values are never sent to any server.

Frequently Asked Questions

What is the difference between US and Imperial volume units?
US customary units differ from Imperial units. A US gallon is 3.785 L while an Imperial gallon is 4.546 L. US pints (473 mL) are smaller than Imperial pints (568 mL). The converter includes both systems for accurate conversions.
How are temperature conversions calculated?
Temperature conversions use the standard formulas: °C = (°F - 32) × 5/9, °F = °C × 9/5 + 32, K = °C + 273.15. The converter handles all three scales and their combinations.
What is the difference between decimal and binary data units?
Decimal units (KB, MB, GB) use powers of 1000. Binary units (KiB, MiB, GiB) use powers of 1024. A megabyte is 1,000,000 bytes while a mebibyte is 1,048,576 bytes. The converter includes both systems.
Are the conversion factors accurate?
All conversion factors use international standard definitions (SI, NIST). Length conversions use the exact definition of the meter. Mass uses the kilogram standard. All values are computed client-side with full double-precision floating point.