Free Unit Converter - Convert Length, Weight, Volume & More

Convert between different units of measurement for length, weight, volume, temperature, area, and speed. Free online unit converter with 6 categories and 30+ units. No registration required.

How to Use Our Unit Converter

1. Select the measurement category (length, weight, volume, etc.)
2. Choose the unit you want to convert from
3. Select the target unit you want to convert to
4. Enter the value you want to convert
5. View the converted result instantly
6. Use the reverse conversion feature for quick calculations

Supported Measurement Categories

Length Converter

Convert between meters, feet, inches, yards, miles, kilometers, centimeters, millimeters, and more. Perfect for construction, engineering, and everyday measurements.

Weight Converter

Convert between pounds, kilograms, ounces, grams, tons, stones, and other weight units. Essential for cooking, shipping, and scientific calculations.

Volume Converter

Convert between liters, gallons, cubic meters, cubic feet, milliliters, fluid ounces, cups, pints, and quarts. Ideal for cooking, chemistry, and liquid measurements.

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin. Useful for weather, cooking, scientific work, and international temperature comparisons.

Area Converter

Convert between square meters, square feet, acres, hectares, square yards, and square inches. Perfect for real estate, landscaping, and construction projects.

Speed Converter

Convert between miles per hour, kilometers per hour, meters per second, feet per second, and knots. Essential for automotive, aviation, and sports calculations.

Common Conversion Examples

Length Conversions

1 meter = 3.28084 feet, 1 inch = 2.54 centimeters, 1 mile = 1.60934 kilometers, 1 yard = 0.9144 meters

Weight Conversions

1 kilogram = 2.20462 pounds, 1 ounce = 28.3495 grams, 1 ton = 2000 pounds, 1 stone = 14 pounds

Volume Conversions

1 liter = 0.264172 gallons, 1 gallon = 3.78541 liters, 1 cubic meter = 35.3147 cubic feet, 1 cup = 236.588 milliliters

Temperature Conversions

0°C = 32°F, 100°C = 212°F, -40°C = -40°F, 0K = -273.15°C

Unit Conversion Tips

Use Reference Points

Memorize common conversion factors to quickly estimate conversions. For example, 1 meter is about 3.3 feet, and 1 kilogram is about 2.2 pounds.

Check Your Work

Verify conversions by converting back to the original unit. This helps catch errors and ensures accuracy in your calculations.

Understand Precision

Different units have different levels of precision. Choose the appropriate number of decimal places based on your needs and the accuracy of your measurements.

Use for Planning

Unit converters are perfect for travel planning, recipe adjustments, construction projects, and scientific calculations.

Frequently Asked Questions

How accurate are the conversions?

Our unit converter uses precise conversion factors and provides accurate results for all supported units. Results are typically accurate to 6-8 decimal places.

Can I convert between any units in the same category?

Yes, you can convert between any units within the same measurement category. Simply select the units you want to convert between.

Is this converter free to use?

Yes, our unit converter is completely free to use with no registration required. No hidden fees or limitations on usage.

Can I use this for scientific calculations?

Yes, our converter provides accurate conversions suitable for scientific, engineering, and professional applications. Always verify critical calculations independently.