LengthSelected
Length unit conversion, including metric and imperial units
Precise online unit conversion tool supporting length, weight, temperature, area, and volume conversions
View all unit types supported under each category
Length unit conversion, including metric and imperial units
Weight unit conversion, supporting metric and imperial weight units
Temperature unit conversion, supporting Celsius, Fahrenheit and Kelvin
Area unit conversion, including square meters, hectares, acres, etc.
Volume unit conversion, supporting liters, gallons, pints and other units
Time unit conversion, supporting full range from picoseconds to years
Our unit converter is a powerful online measurement tool that supports precise conversion of multiple units including length, weight, temperature, area, and volume. Popular conversions include lbs to kg, cm to inches, inch to cm, kg to lbs and more. Whether you are an engineer performing technical calculations or a student learning physics and chemistry, you can quickly complete unit conversion tasks with our tool. The tool is completely free, provides real-time conversion, and protects your data privacy.
Our unit converter has the following powerful features
Convert as you type, no waiting required, providing instant conversion results
Advanced calculation algorithms ensure maximum precision for all conversions
Easily swap between source and target units with one click
Support length, weight, temperature, area, and volume conversions
Quickly copy conversion results to clipboard for easy use
Support metric, imperial, and US customary unit systems
Complete unit conversion in just four simple steps
Select the unit category to convert
Choose source and target units
Enter the value in the input box
Real-time display of conversion results
Frequently asked questions about the unit converter
Our converter supports five main categories: Length (meters, feet, inches, etc.), Weight (kilograms, pounds, ounces, etc.), Temperature (Celsius, Fahrenheit, Kelvin), Area (square meters, acres, etc.), and Volume (liters, gallons, etc.).
Our converter uses high-precision calculation algorithms with up to 10 decimal places. Results are scientifically accurate and suitable for professional and academic use.
Yes, you can convert between any units within the same category. For example, within length, you can convert from meters to inches, feet to centimeters, and any other combination.
The conversion calculations are performed locally in your browser, so once the page is loaded, basic functionality works without an internet connection.
Completely free! Our unit converter requires no registration, has no usage limits, and is permanently available at no cost.
Use our unit converter, select the weight category, set source unit to pound (lb) and target unit to kilogram (kg), then input your value to see the conversion result instantly. 1 lb ≈ 0.453592 kg.
In the length converter, select centimeter (cm) as input unit and inch (in) as output unit. Conversion formula: 1 cm = 0.393701 inches. Our tool provides precise real-time conversion.
1 inch = 2.54 cm. This is the international standard conversion factor. Use our length unit converter for quick inch to cm conversion with precise calculations for any value.
1 kg = 2.20462 lbs. Our weight converter uses precise international standard coefficients for kg to lbs conversion, ensuring accurate results. Suitable for fitness, cooking, scientific calculations and various scenarios.
Our unit converter supports 6 major categories: length (like cm to inches, inch to cm), weight (like lbs to kg, kg to lbs), temperature, area, volume, and time. Covering 60+ common units to meet daily life and professional work needs.
When values are very large (≥1,000,000) or very small (<0.0001), the system automatically uses scientific notation to ensure accuracy and readability.
We support multiple unit systems including International System (SI), Imperial units, US customary units, covering common categories like length, weight, temperature, area, and volume.
We use international standard conversion formulas and precise conversion factors. All calculations are rigorously tested. For temperature conversions, we use standard linear conversion formulas to ensure accuracy.
Our temperature conversion fully follows physics laws. Absolute zero (-273.15°C, -459.67°F, 0K) is handled correctly. Temperatures below absolute zero don't exist physically, but the tool performs mathematical calculations for reference.
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