Unit Converter

Our free unit converter helps you quickly and accurately convert between different units of measurement. Whether you need to convert metric to imperial, Celsius to Fahrenheit, or kilograms to pounds, this universal converter handles all common unit conversions with step-by-step explanations.

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Common Conversions
1 mile = 1.609 km 1 inch = 2.54 cm 1 foot = 30.48 cm 1 yard = 0.914 m

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Length Conversion: 5 miles → 8.047 km

  • Conversion: 5 × 1.60934 = 8.047 km
  • Reverse: 8.047 km ÷ 1.60934 = 5 mi
  • Quick estimate: 1 mile ≈ 1.6 km

Memory trick: A 5K race is about 3.1 miles. A marathon (26.2 mi) is 42.2 km.

lightbulb Tips

  • Select category (Length, Weight, etc.)
  • Enter value and choose units
  • Click ⇄ to swap FROM/TO
  • Results update instantly

table_chart Quick Reference

Length
1 in = 2.54 cm 1 ft = 30.48 cm 1 mi = 1.609 km 1 m = 3.281 ft
Weight
1 lb = 0.454 kg 1 oz = 28.35 g 1 kg = 2.205 lb 1 ton = 907 kg
Temperature
°F = (°C × 9/5) + 32 °C = (°F - 32) × 5/9
Volume
1 gal = 3.785 L 1 qt = 0.946 L 1 cup = 236.6 mL 1 fl oz = 29.57 mL

How to Use This Calculator

category

Select Category

Choose the type of measurement (length, weight, temperature, etc.).

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Enter Value

Input the value you want to convert.

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Choose Units

Select the source and target units for conversion.

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View Result

See the converted value with formula and common conversions.

The Formula

Unit conversion multiplies your value by a conversion factor. For example, to convert inches to centimeters, multiply by 2.54 (1 inch = 2.54 cm).

Result = Value × Conversion Factor

lightbulb Variables Explained

  • Value The original measurement value
  • Conversion Factor The ratio between the two units
  • Result The converted value in the target unit

tips_and_updates Pro Tips

1

Metric system uses base-10: kilo (1000), centi (0.01), milli (0.001)

2

For temperature: °F = °C × 9/5 + 32

3

1 inch = 2.54 cm exactly (by definition)

4

1 mile = 1.60934 km, 1 kg = 2.20462 lbs

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Data storage: 1 KB = 1024 bytes (binary) or 1000 bytes (decimal)

6

Use scientific notation for very large or small conversions

Unit Converter - Convert Any Measurement

Instantly convert between different units of measurement with our free online unit converter. Supports length, weight, temperature, volume, area, speed, time, data storage, energy, and pressure conversions with step-by-step explanations.

Length Converter

Convert between meters, feet, inches, centimeters, kilometers, miles, yards, and more. Perfect for construction, travel, or everyday measurements. 1 inch = 2.54 cm, 1 mile = 1.609 km.

Weight Converter

Convert kilograms to pounds, ounces to grams, and more. Essential for cooking, fitness, and shipping. 1 kg = 2.205 lbs, 1 oz = 28.35 g.

Temperature Converter

Convert Celsius to Fahrenheit, Kelvin, and more. Use the formula °F = °C × 1.8 + 32 for quick conversions. Water freezes at 0°C (32°F) and boils at 100°C (212°F).

Volume Converter

Convert liters to gallons, milliliters to cups, and more. Useful for cooking, fuel, and liquid measurements. 1 liter = 0.264 US gallons = 4.227 cups.

Metric to Imperial Conversion

Easily switch between metric (SI) and imperial units. The metric system uses meters, kilograms, and liters, while imperial uses feet, pounds, and gallons. Our converter handles both systems seamlessly.

Data Storage Converter

Convert bytes, kilobytes, megabytes, gigabytes, and terabytes. Understand the difference between binary (1 KB = 1024 bytes) and decimal (1 KB = 1000 bytes) standards.

Frequently Asked Questions

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Data sourced from trusted institutions

All formulas verified against official standards.