Question 1

Which unit conversions are supported?

Accepted Answer

This tool supports 10 categories of unit conversions: Length (mm, cm, m, km, inch, foot, mile, nautical mile, etc.), Weight (mg, g, kg, ton, oz, lb, jin, etc.), Temperature (Celsius, Fahrenheit, Kelvin, Rankine, Réaumur), Area (m², hectare, acre, mu, etc.), Volume (mL, L, m³, gallon, etc.), Speed (m/s, km/h, Mach, speed of light, etc.), Time (nanosecond to year), Data Storage (bit to PB), Pressure (Pascal, atm, psi, etc.), Energy (Joule, Calorie, kWh, etc.).

Question 2

How precise are the conversion results?

Accepted Answer

The conversion results use high-precision floating-point calculations, supporting up to 10 decimal places. For extremely large or small values, scientific notation is used automatically. Conversion factors use international standard definitions to ensure accurate results.

Question 3

How is temperature conversion different from regular unit conversion?

Accepted Answer

Temperature units are not simple multiplication/division relationships — they require offset conversions. For example, the formula for Celsius to Fahrenheit is °F = °C × 9/5 + 32. This tool uses dedicated conversion functions for temperature internally, rather than the generic linear formula, ensuring accuracy in temperature conversion.

Question 4

Why are there tiny errors in some conversion results?

Accepted Answer

This is an inherent characteristic of computer floating-point arithmetic. For example, 1 mile = 1609.344 meters is precisely defined, but floating-point calculations may produce very small errors (typically beyond 10 decimal places). For virtually all practical applications, these tiny errors are negligible. For higher precision, professional calculation tools are recommended.

Unit Converter

Unit Converter Usage Guide

Main Features

Use Cases

常见问题

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