Complete Guide to Unit Converter: Meters to Kilometers, Grams to KG, Inches to Centimeters, and More — Free Online Conversion Tool

A unit converter is an essential tool that allows you to convert measurements between different units of measurement. Whether you're converting meters to kilometers, grams to kilograms, inches to centimeters, or Fahrenheit to Celsius, unit converters simplify complex calculations and ensure accuracy in your work.

In today's globalized world, we frequently encounter different measurement systems. The metric system (meters, kilograms, liters) is used in most countries, while the imperial system (feet, pounds, gallons) is still common in the United States. Additionally, scientific work often requires conversions between various specialized units. Having a reliable unit converter at your fingertips saves time and prevents calculation errors.

The Unit Converter by DevToolsPro.org provides instant conversions between hundreds of units across multiple categories including length, weight, temperature, volume, area, time, speed, and data storage. This browser-based tool runs entirely locally, ensuring your conversions remain private and secure.

Unit converters are essential for:

With the DevToolsPro.org unit converter, you can instantly convert meters to kilometers, grams to kg, inches to centimeters, pounds to kilograms, Fahrenheit to Celsius, and hundreds of other unit pairs with precision and ease.

Length conversions are among the most common unit conversions, especially when working with different measurement systems. Understanding how to convert between meters, kilometers, centimeters, millimeters, inches, feet, yards, and miles is essential for many applications.

Meters to Kilometers and Kilometers to Meters

Converting meters to kilometers is straightforward: divide the number of meters by 1000. For example, 1000 meters equals 1 kilometer, 5000 meters equals 5 kilometers, and 1500 meters equals 1.5 kilometers. Conversely, to convert kilometers to meters, multiply by 1000. One kilometer equals 1000 meters, making this one of the simplest conversions in the metric system.

The length converter handles meters to kilometers conversions instantly. Whether you're converting 100 meters to kilometers (0.1 km), 1000 meters to kilometers (1 km), or any other value, the tool provides accurate results immediately.

Inches to Centimeters and Centimeters to Inches

Converting inches to centimeters requires multiplying by 2.54, as one inch equals exactly 2.54 centimeters. For example, 1 inch equals 2.54 centimeters, 10 inches equals 25.4 centimeters, and 12 inches (1 foot) equals 30.48 centimeters. To convert centimeters to inches, divide by 2.54. This conversion is crucial when working with international measurements or converting between metric and imperial systems.

Common conversions include 1 inch to centimeters (2.54 cm), 5 inches to centimeters (12.7 cm), and 100 centimeters to inches (39.37 in). The unit converter makes these conversions effortless, whether you're converting inches to centimeters for a design project or centimeters to inches for a measurement specification.

Feet to Meters and Meters to Feet

Converting feet to meters involves multiplying by 0.3048, as one foot equals 0.3048 meters. For example, 1 foot equals 0.3048 meters, 3 feet equals 0.9144 meters, and 10 feet equals 3.048 meters. To convert meters to feet, divide by 0.3048 or multiply by 3.28084. One meter equals approximately 3.28084 feet.

This conversion is essential for construction, architecture, and engineering projects that require switching between metric and imperial measurements. The unit converter provides precise feet to meters conversions, helping professionals work accurately across measurement systems.

Other Length Conversions

The unit converter also handles conversions between millimeters, centimeters, yards, miles, and nautical miles. Whether you need to convert millimeters to centimeters (divide by 10), yards to meters (multiply by 0.9144), or miles to kilometers (multiply by 1.60934), the tool provides instant, accurate results.

Weight conversions are essential for cooking, shipping, scientific research, and everyday measurements. Understanding how to convert between grams, kilograms, milligrams, pounds, ounces, and tons helps ensure accuracy in various applications.

Grams to Kilograms and Kilograms to Grams

Converting grams to kilograms is simple: divide by 1000. One kilogram equals 1000 grams, so 1000 grams equals 1 kilogram, 500 grams equals 0.5 kilograms, and 2500 grams equals 2.5 kilograms. To convert kilograms to grams, multiply by 1000. This conversion is fundamental in the metric system and is used extensively in science, cooking, and commerce.

The weight converter handles grams to kg conversions instantly. Whether you're converting 100 grams to kg (0.1 kg), 1000 grams to kg (1 kg), or 5000 grams to kg (5 kg), the tool provides accurate results. This is particularly useful when working with recipes, scientific measurements, or product specifications that use different weight units.

Pounds to Kilograms and Kilograms to Pounds

Converting pounds to kilograms requires multiplying by 0.453592, as one pound equals approximately 0.453592 kilograms. For example, 1 pound equals 0.453592 kg, 10 pounds equals 4.53592 kg, and 100 pounds equals 45.3592 kg. To convert kilograms to pounds, multiply by 2.20462. One kilogram equals approximately 2.20462 pounds.

This conversion is crucial when working with international shipping, fitness tracking, or any application that requires switching between metric and imperial weight systems. Common conversions include 1 pound to kg (0.454 kg), 5 pounds to kg (2.27 kg), and 1 kg to pounds (2.2 lb). The unit converter makes pounds to kg conversions effortless and accurate.

Ounces to Grams and Grams to Ounces

Converting ounces to grams involves multiplying by 28.3495, as one ounce equals 28.3495 grams. For example, 1 ounce equals 28.35 grams, 8 ounces (half a pound) equals 226.8 grams, and 16 ounces (1 pound) equals 453.59 grams. To convert grams to ounces, divide by 28.3495.

This conversion is essential for cooking recipes, precious metals trading, and postal services. The unit converter handles ounces to grams conversions precisely, ensuring accurate measurements for any application.

Other Weight Conversions

The unit converter also supports conversions between milligrams, tons (US and metric), and stones. Whether you need to convert milligrams to grams (divide by 1000), metric tons to kilograms (multiply by 1000), or stones to pounds (multiply by 14), the tool provides instant results.

Temperature conversions are essential for weather monitoring, cooking, scientific research, and international communication. Understanding how to convert between Fahrenheit, Celsius, and Kelvin ensures accurate temperature measurements across different systems.

Fahrenheit to Celsius

Converting Fahrenheit to Celsius requires subtracting 32 from the Fahrenheit temperature, then multiplying by 5/9. The formula is: °C = (°F - 32) × 5/9. For example, 32°F equals 0°C (freezing point of water), 68°F equals 20°C, 86°F equals 30°C, and 212°F equals 100°C (boiling point of water).

The temperature converter handles Fahrenheit to Celsius conversions instantly. Common conversions include 32°F to Celsius (0°C), 70°F to Celsius (21.1°C), 100°F to Celsius (37.8°C), and 212°F to Celsius (100°C). This conversion is essential when reading weather forecasts, cooking recipes, or scientific data from different regions.

Celsius to Fahrenheit

Converting Celsius to Fahrenheit involves multiplying the Celsius temperature by 9/5, then adding 32. The formula is: °F = (°C × 9/5) + 32. For example, 0°C equals 32°F, 20°C equals 68°F, 37°C (body temperature) equals 98.6°F, and 100°C equals 212°F.

Common Celsius to Fahrenheit conversions include 0°C to Fahrenheit (32°F), 25°C to Fahrenheit (77°F), and 100°C to Fahrenheit (212°F). The unit converter provides accurate Celsius to Fahrenheit conversions for any temperature value.

Kelvin Conversions

Kelvin is the scientific temperature scale used in physics and chemistry. To convert Celsius to Kelvin, add 273.15. To convert Kelvin to Celsius, subtract 273.15. For example, 0°C equals 273.15 K, and 100°C equals 373.15 K. The unit converter supports Kelvin conversions alongside Fahrenheit and Celsius, making it useful for scientific applications.

Volume conversions are essential for cooking, chemistry, engineering, and everyday measurements. Understanding how to convert between liters, milliliters, gallons, quarts, pints, cups, and fluid ounces ensures accuracy in recipes, scientific experiments, and commercial applications.

Liters to Gallons and Gallons to Liters

Converting liters to gallons (US) requires dividing by 3.78541, as one US gallon equals 3.78541 liters. For example, 1 gallon equals 3.785 liters, 5 gallons equals 18.927 liters, and 10 gallons equals 37.854 liters. To convert gallons to liters, multiply by 3.78541. UK gallons differ slightly, with one UK gallon equaling 4.54609 liters.

The volume converter handles liters to gallons conversions for both US and UK gallons. Common conversions include 1 liter to gallons (0.264 US gal), 4 liters to gallons (1.057 US gal), and 10 liters to gallons (2.642 US gal). This conversion is crucial for fuel consumption, beverage measurements, and international trade.

Milliliters to Liters and Liters to Milliliters

Converting milliliters to liters is straightforward: divide by 1000. One liter equals 1000 milliliters, so 1000 mL equals 1 L, 500 mL equals 0.5 L, and 250 mL equals 0.25 L. To convert liters to milliliters, multiply by 1000. This conversion is fundamental in the metric system and is used extensively in cooking, medicine, and chemistry.

Common conversions include 100 milliliters to liters (0.1 L), 500 milliliters to liters (0.5 L), and 1000 milliliters to liters (1 L). The unit converter provides instant milliliters to liters conversions, making it easy to work with liquid measurements in any application.

Other Volume Conversions

The unit converter also supports conversions between quarts, pints, cups, fluid ounces, and cubic meters. Whether you need to convert quarts to liters (multiply by 0.946), pints to liters (multiply by 0.473), or cubic meters to liters (multiply by 1000), the tool provides accurate results instantly.

Area conversions are essential for real estate, construction, agriculture, and land measurement. Understanding how to convert between square meters, square kilometers, square feet, square yards, acres, and hectares ensures accurate area calculations.

Square Meters to Square Feet and Square Feet to Square Meters

Converting square meters to square feet requires multiplying by 10.7639, as one square meter equals 10.7639 square feet. For example, 1 m² equals 10.764 ft², 10 m² equals 107.639 ft², and 100 m² equals 1076.39 ft². To convert square feet to square meters, divide by 10.7639.

The area converter handles square meters to square feet conversions instantly. Common conversions include 1 square meter to square feet (10.764 ft²), 50 square meters to square feet (538.2 ft²), and 100 square meters to square feet (1076.39 ft²). This conversion is essential for real estate listings, construction projects, and interior design.

Acres to Hectares and Hectares to Acres

Converting acres to hectares involves multiplying by 0.404686, as one acre equals 0.404686 hectares. For example, 1 acre equals 0.405 hectares, 10 acres equals 4.047 hectares, and 100 acres equals 40.47 hectares. To convert hectares to acres, multiply by 2.47105. One hectare equals 2.47105 acres.

This conversion is crucial for agricultural land measurement, forestry, and large-scale property transactions. The unit converter provides accurate acres to hectares conversions for any area value.

Other Area Conversions

The unit converter also supports conversions between square kilometers, square centimeters, square inches, and square yards. Whether you need to convert square kilometers to square meters (multiply by 1,000,000), square inches to square centimeters (multiply by 6.4516), or square yards to square meters (multiply by 0.836), the tool provides instant results.

Time and speed conversions are essential for scheduling, travel planning, scientific calculations, and everyday time management. Understanding how to convert between seconds, minutes, hours, days, and various speed units ensures accurate time and velocity measurements.

Time Conversions

Converting seconds to minutes requires dividing by 60, as one minute equals 60 seconds. For example, 60 seconds equals 1 minute, 300 seconds equals 5 minutes, and 3600 seconds equals 60 minutes (1 hour). To convert minutes to seconds, multiply by 60. The unit converter handles all time conversions including hours to days (divide by 24), days to weeks (divide by 7), and weeks to months (divide by 4.33).

Common time conversions include 60 seconds to minutes (1 min), 3600 seconds to hours (1 h), and 86400 seconds to days (1 day). The time converter provides instant time conversions for any duration.

Speed Conversions

Converting kilometers per hour to miles per hour requires multiplying by 0.621371, as one km/h equals 0.621371 mph. For example, 60 km/h equals 37.28 mph, 100 km/h equals 62.14 mph, and 120 km/h equals 74.56 mph. To convert miles per hour to kilometers per hour, multiply by 1.60934.

The unit converter handles speed conversions including meters per second to kilometers per hour (multiply by 3.6), miles per hour to kilometers per hour, and knots to miles per hour. This is essential for travel planning, vehicle speed limits, and aviation applications.

Data storage conversions are essential for computing, file management, and understanding digital storage capacity. Understanding how to convert between bits, bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes ensures accurate data size measurements.

Bytes to Kilobytes and Kilobytes to Megabytes

Converting bytes to kilobytes requires dividing by 1024 (in binary) or 1000 (in decimal), as one kilobyte equals 1024 bytes in binary systems. For example, 1024 bytes equals 1 KB, 5120 bytes equals 5 KB, and 1048576 bytes equals 1024 KB (1 MB). To convert kilobytes to megabytes, divide by 1024.

The data storage converter handles bytes to kilobytes conversions instantly. Common conversions include 1024 bytes to kilobytes (1 KB), 1048576 bytes to megabytes (1 MB), and 1073741824 bytes to gigabytes (1 GB). This conversion is essential for understanding file sizes, storage capacity, and data transfer rates.

Megabytes to Gigabytes and Gigabytes to Terabytes

Converting megabytes to gigabytes requires dividing by 1024, as one gigabyte equals 1024 megabytes. For example, 1024 MB equals 1 GB, 5120 MB equals 5 GB, and 10240 MB equals 10 GB. To convert gigabytes to terabytes, divide by 1024. One terabyte equals 1024 gigabytes.

Common conversions include 1024 megabytes to gigabytes (1 GB), 1024 gigabytes to terabytes (1 TB), and 1024 terabytes to petabytes (1 PB). The unit converter provides accurate data storage conversions for any file size or storage capacity.

The DevToolsPro.org Unit Converter offers several advantages over other conversion tools, making it the ideal choice for developers, students, professionals, and everyday users.

Privacy and Security

Unlike many online converters that send your data to remote servers, the DevToolsPro.org unit converter runs entirely in your browser. All conversions happen locally using JavaScript, ensuring your measurements and calculations never leave your device. This privacy-first approach is essential when working with sensitive data or proprietary measurements.

There's no registration required, no data collection, and no tracking. You can use the converter as much as you want without any privacy concerns. Your conversion history and values remain completely private and secure.

Comprehensive Unit Coverage

The unit converter supports hundreds of units across eight categories: length, weight, temperature, volume, area, time, speed, and data storage. Whether you need to convert meters to kilometers, grams to kg, inches to centimeters, Fahrenheit to Celsius, pounds to kilograms, or any other unit pair, the tool provides instant, accurate results.

Popular conversions like meters to kilometers, grams to kilograms, inches to centimeters, feet to meters, pounds to kg, and Fahrenheit to Celsius are all supported with precision. The tool handles both metric and imperial systems, making it useful for international applications.

User-Friendly Interface

The unit converter features an intuitive interface that makes conversions effortless. Simply select a category, choose your "from" and "to" units, enter a value, and get instant results. The tool includes quick conversion buttons for popular conversions like meters to kilometers, grams to kg, and inches to centimeters, saving you time on common conversions.

The swap button allows you to quickly reverse conversions, and the copy button lets you easily copy results for use in other applications. The clean, modern design ensures a pleasant user experience.

Accuracy and Precision

The unit converter uses precise conversion factors to ensure accurate results. All conversions are based on standard international definitions, ensuring consistency and reliability. Whether you're converting meters to kilometers for a construction project or grams to kg for a recipe, you can trust the accuracy of the results.

The tool handles both small and large values, from millimeters to kilometers, milligrams to tons, and bytes to petabytes. No matter the scale of your conversion, the tool provides precise results.

Free and Accessible

The unit converter is completely free to use with no limitations, ads, or hidden costs. It works offline once loaded, making it accessible even without an internet connection. The tool is compatible with all modern browsers and devices, ensuring you can convert units anywhere, anytime.

Here are practical examples of how the unit converter can help with everyday conversions:

Length Conversion Examples

• Meters to Kilometers: Converting 5000 meters to kilometers equals 5 km. This is useful for measuring running distances or travel routes.
• Inches to Centimeters: Converting 10 inches to centimeters equals 25.4 cm. Essential for international product specifications or design measurements.
• Feet to Meters: Converting 6 feet to meters equals 1.829 m. Useful for height measurements or room dimensions.
• Miles to Kilometers: Converting 10 miles to kilometers equals 16.093 km. Important for travel distance calculations.

Weight Conversion Examples

• Grams to Kilograms: Converting 2500 grams to kg equals 2.5 kg. Essential for cooking recipes or product weights.
• Pounds to Kilograms: Converting 150 pounds to kg equals 68.04 kg. Useful for weight tracking or shipping calculations.
• Ounces to Grams: Converting 16 ounces to grams equals 453.59 g. Important for precise cooking measurements.
• Kilograms to Pounds: Converting 70 kg to pounds equals 154.32 lb. Common for fitness and health tracking.

Temperature Conversion Examples

• Fahrenheit to Celsius: Converting 68°F to Celsius equals 20°C. Essential for weather forecasts and cooking temperatures.
• Celsius to Fahrenheit: Converting 25°C to Fahrenheit equals 77°F. Useful for international temperature references.
• Body Temperature: Converting 98.6°F to Celsius equals 37°C. Important for medical measurements.

Volume Conversion Examples

• Liters to Gallons: Converting 10 liters to gallons equals 2.642 US gallons. Essential for fuel consumption or beverage measurements.
• Milliliters to Liters: Converting 500 milliliters to liters equals 0.5 L. Common in cooking and medicine.
• Cups to Milliliters: Converting 2 cups to milliliters equals 473.18 mL. Useful for recipe conversions.

The unit converter handles all these conversions and hundreds more, making it an indispensable tool for anyone who works with measurements. Whether you're converting meters to kilometers for a project, grams to kg for a recipe, or inches to centimeters for a design, the tool provides instant, accurate results. Explore all conversion categories: length, weight, temperature, volume, area, time, speed, and data storage.

While the unit converter handles calculations automatically, understanding conversion principles helps ensure accuracy and catch potential errors. Here are tips for working with unit conversions:

Understand Conversion Factors

Familiarize yourself with common conversion factors. For example, 1 kilometer equals 1000 meters, 1 kilogram equals 1000 grams, and 1 inch equals 2.54 centimeters. Knowing these relationships helps verify converter results and catch mistakes.

Check Your Units

Always verify you've selected the correct "from" and "to" units. A common mistake is selecting meters when you meant kilometers, or grams when you meant kilograms. Double-checking unit selections prevents calculation errors.

Use Appropriate Precision

Consider the precision needed for your application. For cooking, rounding to one or two decimal places is usually sufficient. For scientific calculations, you may need more precision. The unit converter provides precise results, but you can round as needed for your specific use case.

Verify Results

For critical conversions, verify results using known conversion factors or a second source. While the unit converter is accurate, double-checking important measurements ensures reliability.

Use Quick Conversions

Take advantage of the quick conversion buttons for common conversions like meters to kilometers, grams to kg, and inches to centimeters. These shortcuts save time and reduce the chance of selecting incorrect units.

The DevToolsPro.org Unit Converter simplifies all these processes, providing instant, accurate conversions for meters to kilometers, grams to kilograms, inches to centimeters, Fahrenheit to Celsius, and hundreds of other unit pairs. Whether you're a developer, student, professional, or everyday user, this free tool makes unit conversions effortless and reliable. Access specialized converters for length, weight, temperature, volume, area, time, speed, and data storage conversions.