📖 What is Unit Conversion?
Unit conversion is the process of converting a measurement from one unit to another while maintaining the same quantity. It's essential in science, engineering, cooking, travel, and everyday life.
🔧 Common Conversion Categories
📏 Length
1 km = 1000 m
1 m = 100 cm = 1000 mm
1 mile = 1.60934 km
1 foot = 0.3048 m
1 inch = 2.54 cm
1 yard = 0.9144 m
⚖️ Weight (Mass)
1 kg = 1000 g = 1,000,000 mg
1 lb = 0.453592 kg
1 oz = 28.3495 g
1 ton = 1000 kg
💧 Volume
1 L = 1000 mL
1 gallon = 3.78541 L
1 quart = 0.946353 L
1 cup = 236.588 mL
1 fl oz = 29.5735 mL
🌡️ Temperature
°C = (°F - 32) × 5/9
°F = (°C × 9/5) + 32
K = °C + 273.15
📐 Area
1 m² = 10,000 cm²
1 km² = 1,000,000 m²
1 acre = 4046.86 m²
1 sq ft = 0.092903 m²
📝 How to Convert Units
The basic principle of unit conversion is multiplication by a conversion factor that equals 1.
New Value = Original Value × Conversion Factor
Example: Convert 5 meters to centimeters
Conversion factor: 1 m = 100 cm
5 m × 100 = 500 cm
Conversion factor: 1 m = 100 cm
5 m × 100 = 500 cm
🌡️ Temperature Conversion Formulas
Celsius to Fahrenheit: °F = (°C × 9/5) + 32
Fahrenheit to Celsius: °C = (°F - 32) × 5/9
Celsius to Kelvin: K = °C + 273.15
Kelvin to Celsius: °C = K - 273.15
Fahrenheit to Celsius: °C = (°F - 32) × 5/9
Celsius to Kelvin: K = °C + 273.15
Kelvin to Celsius: °C = K - 273.15
Example: Convert 100°C to Fahrenheit
°F = (100 × 9/5) + 32 = 180 + 32 = 212°F (water boils)
°F = (100 × 9/5) + 32 = 180 + 32 = 212°F (water boils)
Pro Tips:
- Always check your units: Make sure you're converting between compatible units (length to length, not length to weight)
- Use conversion factors: Memorize common conversions or use the calculator above
- Temperature is special: Temperature conversions use formulas, not simple multiplication
- Double-check your work: Does the result make sense? 100°C should be 212°F (boiling water)
🎯 Real-Life Applications
- Cooking: Converting between cups, tablespoons, and milliliters
- Travel: Converting kilometers to miles, Celsius to Fahrenheit
- Construction: Converting feet to meters, square feet to square meters
- Science: Converting between metric units for experiments
- Shopping: Comparing prices per kilogram vs per pound
Ready to convert? Select a category above, enter your value, and see detailed step-by-step explanations for every conversion!