📦 立方英寸 ↔ 加仑Cubic Inches to Gallons
1 US gal = 231 in³。支持立方英寸、加仑、升、立方英尺互算。1 US gal = 231 in³. Units: cubic inch, gallon (US), litre, cubic foot.
点击任意一行可复制该结果；小于 0.0001 或不小于 10¹⁵ 的数值用 × 10ⁿ 科学计数法显示Click any row to copy that result. Values below 0.0001 or at least 10¹⁵ are shown in × 10ⁿ notation
使用说明与常见问题How-to & FAQ
「立方英寸 ↔ 加仑」是什么？What is the Cubic Inches to Gallons tool?
1 US gal = 231 in³。支持立方英寸、加仑、升、立方英尺互算。1 US gal = 231 in³. Units: cubic inch, gallon (US), litre, cubic foot.
如何使用「立方英寸 ↔ 加仑」？How do I use the Cubic Inches to Gallons tool?
在「立方英寸 ↔ 加仑」中输入数值并选择原单位，表格会同时列出换算到所有其他单位的结果，可一键复制。Enter a value in the Cubic Inches to Gallons and choose the source unit; the table shows the value in every other unit at once, ready to copy.
加仑是怎么定义的？How is the gallon defined?
美制液量加仑定义为正好 231 立方英寸（≈ 3.785 升），所以 立方英寸 ÷ 231 = 加仑。英制加仑约 277.42 立方英寸，不适用于本页。The US liquid gallon is defined as exactly 231 cubic inches (≈ 3.785 L), so cubic inches ÷ 231 = gallons. The imperial gallon, about 277.42 cubic inches, is not used here.
1 立方英寸 等于多少其他单位？How much is 1 cubic inch in the other units?
1 立方英寸 = 0.004329004329 加仑 = 0.016387064 升 = 0.0005787037037 立方英尺（按定义系数计算，最多保留 10 位有效数字）。本页不接受负数：输入负值会提示错误。1 cubic inch = 0.004329004329 gallon (US) = 0.016387064 litre = 0.0005787037037 cubic foot (from the defined factors, up to 10 significant digits). Negative values are not accepted here and show an error.
有哪些选项可以调整？What options can I adjust?
「立方英寸 ↔ 加仑」的设置：「数值」默认 1。每次生成结果都按当前设置处理。Settings in the Cubic Inches to Gallons — "Value" default 1. The result always uses the current settings.
换算系数准确吗？Are the conversion factors exact?
「立方英寸 ↔ 加仑」采用国际单位制（SI）或公认标准中的定义值作为换算系数，结果保留约 10 位有效数字。The Cubic Inches to Gallons uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「立方英寸 ↔ 加仑」免费吗？需要注册吗？Is the Cubic Inches to Gallons free? Do I need an account?
「立方英寸 ↔ 加仑」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 Cubic Inches to Gallons is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.