Unit Converter
Convert between different units of measurement across multiple categories
Unit Converter
Conversion Results
Enter a value and select units to see the conversion
Understanding Measurement Systems
Metric System
The metric system (SI) is the international standard for measurements, based on powers of 10 for easy conversion between units.
Base SI Units
- • Meter (m) - length
- • Kilogram (kg) - mass
- • Second (s) - time
- • Kelvin (K) - temperature
- • Ampere (A) - electric current
- • Mole (mol) - amount of substance
- • Candela (cd) - luminous intensity
Imperial System
The imperial system is primarily used in the United States and features units like feet, pounds, and gallons with historical origins.
Common Imperial Units
- • Inch, foot, yard, mile - length
- • Ounce, pound, ton - weight
- • Fluid ounce, cup, pint, quart, gallon - volume
- • Fahrenheit - temperature
- • Square foot, acre - area
- • Miles per hour - speed
Common Unit Conversions
Length
Essential length conversions for daily use and international communication.
1 inch = 2.54 centimeters
1 kilometer = 0.621371 miles
Weight & Mass
Weight conversions for cooking, shipping, and scientific applications.
1 ounce = 28.3495 grams
1 pound = 0.453592 kilograms
Temperature
Temperature scales for weather, cooking, and scientific measurements.
°C = (°F - 32) × 5/9
K = °C + 273.15
Volume
Volume conversions for cooking, chemistry, and fluid measurements.
1 cup = 236.588 milliliters
1 fluid ounce = 29.5735 milliliters
Area
Area measurements for real estate, agriculture, and construction.
1 acre = 4,046.86 sq meters
1 hectare = 2.47105 acres
Speed
Speed conversions for transportation and physics calculations.
1 mph = 1.60934 km/h
1 knot = 1.852 km/h
Conversion Tips
- • Memorize common conversions
- • Use dimensional analysis
- • Check units in calculations
- • Round appropriately for context
- • Understand significant figures
- • Use conversion factors
Real-World Applications
- • International trade and commerce
- • Scientific research and data
- • Engineering and construction
- • Cooking and recipe conversion
- • Travel and navigation
- • Medical and pharmaceutical
Precision & Accuracy
- • Consider measurement uncertainty
- • Match precision to application
- • Understand rounding errors
- • Use appropriate significant digits
- • Account for measurement limits
- • Validate critical conversions
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