💧 加仑转千克（水）Gal to kg (Water)

使用说明与常见问题How-to & FAQ

「加仑转千克（水）」是什么？What is the Gal to kg (Water) tool?

美制加仑水的质量（ρ ≈ 0.998 kg/L @20°C，按 1 gal = 3.785411784 L）。可设置「加仑 (US)」、「密度 kg/L」。Mass of US gallons of water (ρ ≈ 0.998 kg/L @20°C; 1 gal = 3.785411784 L). Settings: Gallons (US), Density kg/L.

如何使用「加仑转千克（水）」？How do I use the Gal to kg (Water) tool?

填写美制加仑数，按需修改密度（默认水约 0.998 kg/L），即可得到对应的千克数。结果会随输入实时更新。Enter the US gallons and change the density if needed (water is about 0.998 kg/L by default) to get the mass in kilograms. The result updates as you type.

默认Default

接近纯水 20°C；非水液体请改密度。Near pure water at 20°C; change density for other liquids.

能举个计算实例吗？Can you show a worked example?

例如在「加仑转千克（水）」中填 加仑 (US) = 1，密度 kg/L = 1，结果区显示：千克：3.7854 kg；升：3.7854 L；磅：8.345 lbFor example, entering Gallons (US) = 1, Density kg/L = 1 in the Gal to kg (Water) gives: Kilograms: 3.7854 kg; Litres: 3.7854 L; Pounds: 8.345 lb

哪些输入会被检查？Which inputs are validated?

「加仑转千克（水）」会检查这些输入——「加仑 (US)」、「密度 kg/L」：必须填写，须大于 0；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Gal to kg (Water) checks its inputs — "Gallons (US)", "Density kg/L": required, must be greater than 0; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.

有哪些选项可以调整？What options can I adjust?

「加仑转千克（水）」的设置：「加仑 (US)」默认 1；「密度 kg/L」默认 0.998。每次生成结果都按当前设置处理。Settings in the Gal to kg (Water) — "Gallons (US)" default 1; "Density kg/L" default 0.998. The result always uses the current settings.

「加仑转千克（水）」免费吗？需要注册吗？Is the Gal to kg (Water) free? Do I need an account?

「加仑转千克（水）」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 Gal to kg (Water) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.