Unit Converter
Convert between different units of measurement with precision. Supports length, weight, temperature, volume, area, speed, time, energy, power, and pressure conversions.
Unit Converter
Quick Conversions:
Accurate Conversions: All conversions use precise conversion factors and handle special cases like temperature scales. Results are calculated in real-time.
Supported Unit Categories
📏 Physical Measurements
- • Length: Meters, feet, inches, kilometers, miles, yards, etc.
- • Weight/Mass: Kilograms, pounds, grams, ounces, stones, tons
- • Area: Square meters, acres, hectares, square feet, square miles
- • Volume: Liters, gallons, cups, tablespoons, cubic meters
- • Temperature: Celsius, Fahrenheit, Kelvin, Rankine
⚡ Scientific & Engineering
- • Speed: m/s, km/h, mph, knots, Mach numbers
- • Time: Seconds, minutes, hours, days, weeks, years
- • Energy: Joules, calories, BTU, watt-hours, kilowatt-hours
- • Power: Watts, kilowatts, horsepower, BTU/hour
- • Pressure: Pascals, bar, psi, atmospheres, mmHg
Common Conversion Use Cases
🏠 Home & DIY
- • Room measurements (feet ↔ meters)
- • Cooking measurements (cups ↔ ml)
- • Temperature settings (°F ↔ °C)
- • Material quantities (lbs ↔ kg)
- • Paint coverage (sqft ↔ sqm)
- • Tool specifications
🚗 Travel & Transport
- • Speed limits (mph ↔ km/h)
- • Fuel efficiency (mpg ↔ l/100km)
- • Distance planning (miles ↔ km)
- • Weight limits (lbs ↔ kg)
- • Tire pressure (psi ↔ bar)
- • Engine power (hp ↔ kW)
🔬 Science & Engineering
- • Laboratory measurements
- • Engineering specifications
- • Energy calculations
- • Pressure systems
- • Material properties
- • Research data conversion
Measurement Systems
📐 Metric System (SI Units)
Base Units:
- • Meter (m) - Length
- • Kilogram (kg) - Mass
- • Second (s) - Time
- • Kelvin (K) - Temperature
- • Ampere (A) - Electric current
Prefixes:
- • kilo- (k) = ×1,000
- • centi- (c) = ×0.01
- • milli- (m) = ×0.001
- • micro- (μ) = ×0.000001
- • nano- (n) = ×0.000000001
🇺🇸 Imperial System (US Customary)
Length:
- • 12 inches = 1 foot
- • 3 feet = 1 yard
- • 5,280 feet = 1 mile
Weight:
- • 16 ounces = 1 pound
- • 2,000 pounds = 1 ton
- • 14 pounds = 1 stone (UK)
Volume:
- • 8 fluid oz = 1 cup
- • 2 cups = 1 pint
- • 4 quarts = 1 gallon
Temperature Conversions
🌡️ Temperature Scales
Common Temperatures:
- • Water freezes: 0°C = 32°F = 273.15K
- • Room temperature: 20°C = 68°F = 293K
- • Body temperature: 37°C = 98.6°F = 310K
- • Water boils: 100°C = 212°F = 373K
- • Absolute zero: -273.15°C = -459.67°F = 0K
Conversion Formulas:
- • C to F: (C × 9/5) + 32
- • F to C: (F - 32) × 5/9
- • C to K: C + 273.15
- • K to C: K - 273.15
- • F to R: F + 459.67
🔥 Cooking Temperatures
Oven Settings:
- • Low: 150°C (300°F)
- • Moderate: 180°C (350°F)
- • Hot: 200°C (400°F)
- • Very hot: 230°C (450°F)
Meat Temperatures:
- • Rare beef: 50°C (120°F)
- • Medium beef: 60°C (140°F)
- • Well done: 70°C (160°F)
- • Chicken: 74°C (165°F)
Candy Making:
- • Soft ball: 115°C (240°F)
- • Hard crack: 150°C (300°F)
- • Caramel: 170°C (340°F)
- • Deep fry: 180°C (350°F)
Conversion Accuracy & Precision
🎯 Precision Standards
- • Length: Accurate to 10+ decimal places
- • Weight: Uses exact conversion factors
- • Temperature: Precise formula implementations
- • Volume: Based on official definitions
- • Scientific notation: For very large/small numbers
- • Rounding: Intelligent precision based on input
📊 Conversion Sources
- • NIST: National Institute of Standards and Technology
- • SI Brochure: International System of Units
- • ISO Standards: International Organization for Standardization
- • BIPM: International Bureau of Weights and Measures
- • Regular Updates: Conversion factors updated as needed
- • Quality Assurance: Cross-verified with multiple sources
📏 Measurement Standards
Our converter uses internationally recognized conversion factors and maintains precision to ensure accuracy for both everyday use and scientific applications. Temperature conversions use exact formulas, while other units use precise multiplicative factors.
Tips for Accurate Conversions
✅ Best Practices
Input Guidelines:
- • Use decimal points, not commas
- • Avoid thousands separators
- • Enter values without units
- • Use scientific notation for extremes
- • Check input format before converting
Interpretation:
- • Consider significant figures
- • Round appropriately for context
- • Understand measurement uncertainty
- • Use appropriate precision for purpose
- • Cross-check critical conversions
⚠️ Common Pitfalls
- • US vs UK Units: Imperial gallons differ (US: 3.785L, UK: 4.546L)
- • Short vs Long Tons: US ton = 907kg, UK ton = 1016kg
- • Fluid vs Weight Ounces: Different measurements entirely
- • Temperature Context: Absolute vs relative temperature differences
- • Precision Limits: Floating point arithmetic limitations
Privacy & Features
🔒 Privacy Protection
- • Client-Side Only: All calculations in your browser
- • No Data Transmission: Values never sent to servers
- • Local Processing: Works completely offline
- • No Tracking: No analytics on conversion data
- • Memory Safe: Results cleared when page closes
- • Secure Context: Uses standard JavaScript math
⚡ Advanced Features
- • Real-time Conversion: Instant results as you type
- • Unit Swapping: Quick reverse conversions
- • Conversion History: Recent conversions saved
- • Copy Results: One-click copying to clipboard
- • Formula Display: See calculation methods
- • Smart Formatting: Scientific notation when needed