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Convert length units like kilometers, meters, inches, and feet online. Supports metric, imperial, and traditional Chinese units with copyable results.
Least Common Multiple (LCM) Calculator
Quickly calculate the least common multiple (LCM) of two or more integers. Supports space-separated number list input.
Circle Area Calculator
Quickly calculate the area of a circle by entering the radius, diameter, or circumference. Supports custom units and precision settings.
Prime and Composite Number Calculator
Instantly identify prime, composite, or special numbers. Supports batch checking and mathematical property analysis.
Trigonometry Calculator
Calculate six trigonometric functions from radian values with custom decimal precision.
Least Common Multiple (LCM) Calculator
Quickly calculate the least common multiple (LCM) of two or more integers. Supports space-separated number list input.
Circle Area Calculator
Quickly calculate the area of a circle by entering the radius, diameter, or circumference. Supports custom units and precision settings.
Prime and Composite Number Calculator
Instantly identify prime, composite, or special numbers. Supports batch checking and mathematical property analysis.
Trigonometry Calculator
Calculate six trigonometric functions from radian values with custom decimal precision.
Inverse Trigonometric Function Calculator
Accurately calculate radian values for inverse trig functions like arcsin and arccos. Supports 6 function types and custom decimal precision.
When dealing with engineering drawings, international shopping sizes, or studying physics, manually converting between different unit systems like meters, feet, and inches is both time-consuming and prone to errors. Using preset conversion factors, this tool instantly converts your input length into dozens of corresponding values across metric (meters, centimeters), imperial (feet, inches), and traditional Chinese (li, zhang, chi) systems. The essence of length conversion is transforming a physical quantity from one measurement standard to another.
Q: How many feet are in 1 meter?
1 meter is approximately equal to 3.28084 feet. This is a fundamental conversion relationship between metric and imperial length units.
Q: How does the tool handle extremely large or small values? How is precision guaranteed?
This tool performs calculations based on double-precision floating-point numbers, which can handle the vast majority of everyday value ranges. For extremely large (e.g., astronomical) or extremely small (e.g., nanoscale) values, the final displayed result is limited by your selected precision and JavaScript's number representation range, which may result in minuscule rounding errors. We recommend selecting an appropriate precision based on your actual use case.
Input values should be in a valid numeric format, avoiding letters or special characters. Conversion results are mathematical calculations based on international standard conversion factors. For actual physical measurements or high-precision engineering, please refer to official standards or calibrated instruments. This tool operates entirely on the front end; all data is processed locally in your browser, ensuring no risk of privacy leaks.
When engaging in cross-border collaboration or reading foreign materials, being familiar with the approximate relationships between common units can greatly improve efficiency. For example: 1 inch (in) ≈ 2.54 centimeters (cm); 1 foot (ft) = 12 inches ≈ 0.3048 meters (m); 1 mile (mi) ≈ 1.609 kilometers (km). A typical conversion example is converting a height of 5 feet 8 inches to centimeters. You can first convert 5 feet to 152.4 cm (5*30.48), then convert 8 inches to 20.32 cm (8*2.54), totaling approximately 172.72 cm. With this tool, you can directly input "5.6667 feet" (which is 5 and 8/12 feet) or calculate them separately and add them together.
