Unit Converters
Seamlessly convert between different units of measurement with our free, accurate, and easy-to-use unit converters. Our suite of tools includes conversions for length, weight, temperature, currency, speed, and many other common and scientific units.
Most Popular
Our top-rated unit converters calculators
Temperature Converter
Convert temperature units with context analysis.
All Unit Converters Calculators (5 calculators)
Length Converter
Convert between length and distance units
Speed Converter
Convert speed units with context analysis
Temperature Converter
Convert temperature units with context analysis.
Area Converter
Convert area units with real-world context.
Clothing Size Conversion Calculator
Convert clothing sizes between US, UK, EU, JP, and IT standards for men, women, and kids.
Complete Guide to Unit Conversion Tools
Whether you're traveling abroad, shopping internationally, working on DIY projects, or need quick conversions for everyday tasks, our free unit converters make it simple. Convert between metric and imperial units instantly with accurate, easy-to-use tools that work on any device. No more confusion about measurements—get precise conversions in seconds.
Length Converter: Distance & Measurements
Our Length Converter handles all your distance and measurement conversion needs. Whether you're measuring room dimensions for furniture, converting recipe measurements, or working with international specifications, this tool covers everything from tiny millimeters to vast kilometers.
Common conversions supported:
Metric Units
- Millimeters (mm)
- Centimeters (cm)
- Meters (m)
- Kilometers (km)
Imperial Units
- Inches (in)
- Feet (ft)
- Yards (yd)
- Miles (mi)
Perfect for:
- Home Improvement: Convert measurements when buying materials from international suppliers
- Travel Planning: Understand distances in kilometers vs. miles
- Education: Students learning metric and imperial systems
- Engineering & Design: Convert technical specifications between measurement systems
- Real Estate: Compare property dimensions in different countries
Speed Converter: Velocity & Pace
The Speed Converter translates velocity measurements between different units used worldwide. Whether you're checking speed limits in another country, comparing running paces, understanding wind speeds, or working with technical specifications, this converter handles it all.
Supported speed units:
- Kilometers per hour (km/h): Standard metric speed unit used in most countries
- Miles per hour (mph): Used in the USA, UK for road speeds
- Meters per second (m/s): Scientific standard, used in physics and engineering
- Knots (kn): Nautical miles per hour, used in aviation and maritime navigation
- Feet per second (ft/s): Common in ballistics and some engineering applications
Common use cases:
Driving Abroad
Convert speed limits when renting cars in foreign countries (60 mph = 97 km/h)
Fitness Tracking
Compare running or cycling speeds across different apps and devices
Aviation & Marine
Convert between knots and standard speed units for navigation
Area Converter: Surface Measurements
The Area Converter helps you convert surface area measurements between metric and imperial systems. Essential for real estate, construction, agriculture, interior design, and any project involving surface calculations.
Area units available:
Common Units
- Square meters (m²) - metric standard
- Square feet (ft²) - US/UK residential
- Square yards (yd²) - carpeting, fabric
- Square inches (in²) - small areas
Large Areas
- Hectares (ha) - agriculture, land
- Acres (ac) - US/UK land measurement
- Square kilometers (km²) - countries, regions
- Square miles (mi²) - large territories
Practical applications:
- Real Estate: Compare property sizes internationally (1,000 sq ft = 93 m²)
- Interior Design: Calculate flooring, carpet, or tile quantities
- Construction: Estimate materials for roofing, painting, or paving
- Agriculture: Convert between acres and hectares for farmland (1 acre = 0.405 hectares)
- Land Development: Understand plot sizes in different measurement systems
Temperature Converter: Heat & Cold
Our Temperature Converter instantly converts between Celsius, Fahrenheit, and Kelvin. Whether you're checking weather forecasts abroad, following international recipes, or working with scientific data, this tool provides accurate temperature conversions.
Temperature scales explained:
- Celsius (°C): Metric standard used worldwide. Water freezes at 0°C and boils at 100°C.
- Fahrenheit (°F): Used in the USA and some Caribbean countries. Water freezes at 32°F and boils at 212°F.
- Kelvin (K): Scientific absolute scale starting at absolute zero (-273.15°C). No degree symbol used.
Weather Reference
- Freezing: 0°C = 32°F
- Cool: 10°C = 50°F
- Room temp: 20°C = 68°F
- Warm: 30°C = 86°F
- Hot: 40°C = 104°F
Cooking Reference
- Low: 150°C = 300°F
- Medium: 180°C = 350°F
- Med-high: 200°C = 400°F
- High: 220°C = 425°F
- Very high: 240°C = 475°F
When you need temperature conversion:
- International Travel: Understand weather forecasts in different countries
- Cooking & Baking: Follow recipes from around the world accurately
- Science & Medicine: Convert between laboratory and clinical temperature scales
- HVAC & Climate Control: Set thermostats when specifications differ
- Swimming Pools & Spas: Maintain proper water temperature
Clothing Size Conversion Calculator: Shop Globally
Shopping for clothes online from international retailers? Our Clothing Size Conversion Calculator eliminates the confusion of different sizing systems. Convert between US, UK, EU, and other international size standards for men's, women's, and children's clothing.
Clothing categories covered:
Women's Clothing
- Dresses & Tops
- Pants & Jeans
- Shoes & Boots
- Bras & Underwear
Men's Clothing
- Shirts & Suits
- Pants & Jeans
- Shoes & Sneakers
- Belts & Accessories
Children's Sizes
- Baby Clothing
- Toddler Sizes
- Kids' Shoes
- Youth Clothing
Why sizing systems differ:
- US Sizes: Based on inches and numeric sizing (4, 6, 8, etc.)
- UK Sizes: Similar to US but typically 2 sizes different for women's clothing
- EU Sizes: Based on centimeters and body measurements (36, 38, 40, etc.)
- Asian Sizes: Often run smaller; marked as S, M, L or with different numeric systems
- Always check the retailer's specific size chart—brands vary
- Measure yourself regularly as body dimensions change
- When between sizes, consider the garment type (fitted vs. relaxed)
- Read customer reviews for fit feedback before purchasing
Why Unit Conversion Matters
In our globalized world, unit conversion is essential. Different countries use different measurement systems, and being able to quickly convert between them:
Enables Global Shopping
Buy products from international retailers with confidence, knowing exact sizes and specifications.
Simplifies Travel
Understand speed limits, distances, temperatures, and local measurements when abroad.
Supports DIY Projects
Work with international product specifications, instructions, and materials accurately.
Aids Education
Students and teachers can easily convert units for homework, experiments, and learning.
Why Choose Our Conversion Tools?
- Instant Results: Get conversions immediately as you type—no waiting
- Bidirectional: Convert in both directions (metric to imperial and vice versa)
- Precision: Accurate calculations using standard conversion factors
- No Registration: Use all converters without creating an account
- 100% Free: No ads blocking your view, no premium features, completely free
- Mobile Optimized: Works flawlessly on smartphones, tablets, and computers
- Privacy Focused: All conversions happen in your browser—no data collected
Conversion Accuracy Note
Our converters use internationally recognized conversion factors and formulas. While we strive for maximum accuracy, some conversions (especially clothing sizes) can vary by manufacturer. For critical applications, always verify with official specifications or consult professionals.
Ready to Convert?
Select any converter above to start converting units instantly.
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