Unit Converter Guide

Master unit conversions with our comprehensive guide. Learn how to convert between metric, imperial, and other unit systems with practical examples.

10 Categories
100+ Units
100% Free

Quick Start Guide

Convert units in 3 simple steps

1. Select Category

Choose the type of units you want to convert: length, weight, temperature, area, volume, etc.

2. Enter Values

Select your source and target units, then enter the value you want to convert.

3. Get Results

Click convert to see the result instantly with high precision and copy functionality.

Conversion Categories

Length Conversions

Convert between: meters, feet, inches, centimeters, millimeters, kilometers, miles, yards, and more.

Common Length Conversions:

  • 1 meter = 3.281 feet = 39.37 inches
  • 1 kilometer = 0.621 miles
  • 1 inch = 2.54 centimeters
  • 1 foot = 12 inches = 0.305 meters
  • 1 yard = 3 feet = 0.914 meters

Use Cases: Construction, engineering, travel planning, sports measurements, and everyday measurements.

Weight Conversions

Convert between: kilograms, pounds, ounces, grams, tons, stones, and more.

Common Weight Conversions:

  • 1 kilogram = 2.205 pounds
  • 1 pound = 16 ounces = 0.454 kilograms
  • 1 gram = 0.035 ounces
  • 1 ton (metric) = 1,000 kilograms = 2,205 pounds
  • 1 stone = 14 pounds = 6.35 kilograms

Use Cases: Cooking and baking, shipping and logistics, fitness and health, scientific measurements.

Temperature Conversions

Convert between: Celsius, Fahrenheit, and Kelvin.

Temperature Conversion Formulas:

  • °F = (°C × 9/5) + 32
  • °C = (°F - 32) × 5/9
  • K = °C + 273.15
  • °C = K - 273.15

Reference Points:

  • Water freezes: 0°C = 32°F = 273.15K
  • Water boils: 100°C = 212°F = 373.15K
  • Room temperature: 20°C = 68°F = 293.15K
  • Body temperature: 37°C = 98.6°F = 310.15K

Use Cases: Weather reports, cooking temperatures, scientific research, HVAC systems.

Area Conversions

Convert between: square meters, square feet, square inches, acres, hectares, square kilometers, and more.

Common Area Conversions:

  • 1 square meter = 10.764 square feet
  • 1 acre = 43,560 square feet = 4,047 square meters
  • 1 hectare = 10,000 square meters = 2.471 acres
  • 1 square kilometer = 1,000,000 square meters = 247.1 acres
  • 1 square foot = 144 square inches = 0.093 square meters

Use Cases: Real estate, construction, agriculture, land surveying, interior design.

Volume Conversions

Convert between: liters, gallons, milliliters, cubic meters, fluid ounces, cups, pints, quarts, and more.

Common Volume Conversions:

  • 1 liter = 0.264 US gallons = 1.057 quarts
  • 1 gallon (US) = 3.785 liters = 128 fluid ounces
  • 1 cup = 8 fluid ounces = 0.237 liters
  • 1 pint = 2 cups = 0.473 liters
  • 1 cubic meter = 1,000 liters = 264.2 gallons

Use Cases: Cooking and baking, liquid measurements, fuel consumption, chemical solutions.

Additional Categories

We also support conversions for:

  • Time: seconds, minutes, hours, days, weeks, months, years
  • Speed: mph, km/h, m/s, knots, feet per second
  • Pressure: Pascal, bar, PSI, atmosphere, torr
  • Energy: Joules, calories, kilowatt-hours, BTU
  • Data Storage: bytes, kilobytes, megabytes, gigabytes, terabytes

Practical Examples

Here are real-world examples of how to use our unit converter effectively:

Home Improvement

Example: Converting room dimensions from feet to meters for flooring calculations.

Room: 12 feet × 15 feet = 3.66m × 4.57m = 16.73 square meters

Cooking & Baking

Example: Converting recipe measurements from US to metric.

2 cups flour = 473ml = 0.473 liters

Travel Planning

Example: Converting distances and temperatures for international travel.

50 miles = 80.47 kilometers, 75°F = 23.9°C

Fitness & Health

Example: Converting body weight and exercise measurements.

150 pounds = 68.04 kilograms, 5K run = 3.11 miles

Automotive

Example: Converting fuel efficiency and speed measurements.

30 mpg = 7.84 L/100km, 60 mph = 96.56 km/h

Science & Research

Example: Converting scientific measurements and data storage.

1 GB = 1,024 MB = 1,048,576 KB

Tips and Best Practices

Accuracy Tips

  • Use appropriate precision: Round results to match the precision of your input
  • Verify critical conversions: Double-check important measurements, especially for safety-critical applications
  • Consider context: Some conversions may have different standards (US vs UK gallons, for example)
  • Use significant figures: Maintain appropriate number of significant figures in your results

Common Conversion Mistakes

  • Mixing US and Imperial units: US gallons differ from Imperial gallons
  • Temperature conversion errors: Remember that 0°C ≠ 0°F
  • Area vs length confusion: Square units require squaring the conversion factor
  • Rounding too early: Complete calculations before rounding final results

Quick Reference Conversions

Length

  • 1 inch = 2.54 cm
  • 1 foot = 30.48 cm
  • 1 mile = 1.609 km

Weight

  • 1 lb = 0.454 kg
  • 1 oz = 28.35 g
  • 1 ton = 1,000 kg

Volume

  • 1 cup = 237 ml
  • 1 gallon = 3.785 L
  • 1 fl oz = 29.57 ml

Frequently Asked Questions

How accurate are the conversions?

Our conversions use standard conversion factors and are accurate to the precision displayed. For critical applications, always verify with authoritative sources.

Can I convert between any units?

You can convert between any units within the same category. For example, you can convert between any length units, but not between length and weight.

What's the difference between US and Imperial units?

US customary units and Imperial units differ for some measurements (like gallons and fluid ounces). Our converter uses US customary units by default.

Can I copy the results?

Yes! Click the "Copy Result" button to copy the converted value to your clipboard for easy pasting into other applications.

Are there any limitations?

Our converter handles all standard unit conversions. For very large or very small numbers, scientific notation may be used for clarity.

Is this converter free to use?

Yes! Our unit converter is completely free to use with no limitations, watermarks, or hidden costs.