Metric Converter
Free online metric converter for length, weight, and temperature. Supports cm, m, inches, feet, kg, lbs, Celsius, Fahrenheit, and Kelvin with instant results.
About This Calculator
The Metric Converter is a versatile online tool designed for anyone who needs to quickly and accurately convert between metric and imperial measurement units. Whether you are a student working on a science project, a professional in construction or engineering, a traveler comparing local measurements, or a cook following an international recipe, this converter handles length, weight, and temperature conversions with precision.
The converter uses internationally recognized conversion formulas and constants. For length conversions, it uses the factor 1 inch = 2.54 cm (exact by definition). Weight conversions use the factor 1 kg = 2.20462 lb, while temperature conversions use the standard formulas: F = (C × 9/5) + 32 and K = C + 273.15. All metric units are based on the International System of Units (SI), and imperial units follow the standards defined by NIST and the UK National Physical Laboratory.
The tool supports three main measurement categories: Length (millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, nautical miles), Weight (milligrams, grams, kilograms, tonnes, ounces, pounds, stones), and Temperature (Celsius, Fahrenheit, Kelvin). Simply select the category, enter your value, choose the source and target units, and get instant results.
Regional Notes
India (IN): Metric system is the official standard for all measurements. However, inches and feet are still commonly used in construction. The converter makes it easy to switch between centimeters and feet/inches for real estate and construction projects.
United States (US): The US uses the customary imperial system for everyday measurements (inches, feet, pounds, Fahrenheit). This converter helps US users work with metric measurements from science, international trade, and global recipes.
United Kingdom (UK): The UK uses a mix of metric (for most official purposes) and imperial (for road distances, beer, and personal weight). This converter handles both systems, including stones for body weight which is still widely used in the UK.
Frequently Asked Questions
How do I convert centimeters to inches using this metric converter?
Select Length as the category, enter your value in the value field, choose Centimeter (cm) under From and Inch under To, then click Convert. The result shows the equivalent measurement in inches using the standard 1 inch = 2.54 cm conversion formula.
Can I convert kilograms to pounds with this metric converter?
Yes, select Weight as the category, enter the value in kilograms, choose Kilogram (kg) under From and Pound (lb) under To, then click Convert. The conversion uses the standard factor of 1 kg = 2.20462 lb.
Does this converter handle temperature units like Celsius and Fahrenheit?
Yes, select Temperature as the category to convert between Celsius, Fahrenheit, and Kelvin. For example, to convert 25°C to Fahrenheit, select Celsius as From and Fahrenheit as To, enter 25, and the calculator returns 77°F using the standard formula F = (C × 9/5) + 32.
Can I convert meters to feet using this tool?
Absolutely. Select the Length category, enter the meter value, choose Meter (m) under From and Foot (ft) under To, then click Convert. The result uses the standard conversion factor of 1 m = 3.28084 ft.
Is this metric converter free and accurate?
Yes, all calculators on Calculy are completely free to use. The metric converter uses precise conversion factors defined by international standards, including SI base units and NIST-recommended conversion constants, ensuring 100% accurate results every time.
What units of length does this metric converter support?
The Length category supports millimeters (mm), centimeters (cm), meters (m), kilometers (km), inches (in), feet (ft), yards (yd), miles (mi), and nautical miles (nmi), covering all common metric and imperial length units.
How do I convert ounces to grams with this converter?
Select the Weight category, choose Ounce (oz) under From and Gram (g) under To, enter your value, and click Convert. The calculator uses the factor 1 oz = 28.3495 g for precise conversion between imperial and metric weight units.
Can students and professionals use this metric converter?
Yes, the metric converter is designed for students studying science and mathematics, professionals in engineering and construction, travelers needing quick unit conversions, and anyone working with mixed metric and imperial measurement systems.