🗺️ 平方英里换算平方公里（mi² 转 km²）Square miles to Square kilometers Converter (mi² to km²)

使用说明与常见问题How-to & FAQ

「平方英里换算平方公里（mi² 转 km²）」是什么？What is the Square miles to Square kilometers Converter (mi² to km²)?

平方英里转换为平方公里，输入数值立即得到结果，附换算公式和常用对照表。Convert square miles to square kilometers instantly, with the formula and a quick reference table.

如何使用「平方英里换算平方公里（mi² 转 km²）」？How do I use the Square miles to Square kilometers Converter (mi² to km²)?

在「平方英里换算平方公里（mi² 转 km²）」中，填写「平方英里 (mi²)」等参数，结果会随输入实时计算并显示在下方。In the Square miles to Square kilometers Converter (mi² to km²): Fill in "Square miles (mi²)"; results are recalculated instantly as you type.

1 平方英里等于多少平方公里？How many square kilometers are in 1 square mile?

1 mi² = 2.58998811 km²。1 mi² = 2.58998811 km².

如何手动把平方英里换算成平方公里？How do I convert square miles to square kilometers by hand?

用公式 平方公里 = 平方英里 × 2.58998811。例如 10 mi² = 25.8998811 km²。Use square kilometers = square miles × 2.58998811. For example, 10 mi² = 25.8998811 km².

可以反向换算吗？Can I convert the other way?

可以。页面下方有反向换算页面的链接，也可以打开完整的单位换算器，在多种单位之间同时换算。「平方英里换算平方公里（mi² 转 km²）」的换算系数采用国际标准定义。Yes. Use the reverse-conversion link below, or open the full unit converter to see many units at once. The Square miles to Square kilometers Converter (mi² to km²) uses internationally defined factors.

「平方英里换算平方公里（mi² 转 km²）」免费吗？需要注册吗？Is the Square miles to Square kilometers Converter (mi² to km²) free? Do I need an account?

「平方英里换算平方公里（mi² 转 km²）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Square miles to Square kilometers Converter (mi² to km²) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.