🥣 升 ↔ 杯Liters to Cups
升与美制杯互算。支持升、杯、毫升、品脱互算。Litres ↔ US cups. Units: litre, cup (US), millilitre, pint (US).
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
「升 ↔ 杯」是什么？What is the Liters to Cups tool?
升与美制杯互算。支持升、杯、毫升、品脱互算。Litres ↔ US cups. Units: litre, cup (US), millilitre, pint (US).
如何使用「升 ↔ 杯」？How do I use the Liters to Cups tool?
在「升 ↔ 杯」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 Liters to Cups and choose the source unit; the table shows the value in every other unit at once, ready to copy.
一杯是多少毫升？How many millilitres in a cup?
1 美制杯 ≈ 236.588 毫升，所以 1 升 ≈ 4.227 杯。很多营养标签用 240 毫升作为一杯，结果会略有不同。1 US cup ≈ 236.588 mL, so 1 L ≈ 4.227 cups. Many nutrition labels use 240 mL as a cup, which gives slightly different numbers.
1 升 等于多少其他单位？How much is 1 litre in the other units?
1 升 = 4.226752838 杯 = 1000 毫升 = 2.113376419 品脱（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 litre = 4.226752838 cup (US) = 1000 millilitre = 2.113376419 pint (US) (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?
「升 ↔ 杯」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 Liters to Cups — "Value" default 1. The result always uses the current settings.
换算系数准确吗？Are the conversion factors exact?
「升 ↔ 杯」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 Liters to Cups uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「升 ↔ 杯」免费吗？需要注册吗？Is the Liters to Cups free? Do I need an account?
「升 ↔ 杯」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 Liters to Cups is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.