🔢 数字千分位格式化Number Formatter (Thousands Separator)
给数字添加千分位分隔符，按不同国家格式显示，以及万/亿和 K/M/B 缩写。Format numbers with thousands separators, locale styles, and compact forms (K/M/B, 万/亿).
使用说明与常见问题How-to & FAQ
「数字千分位格式化」是什么？What is the Number Formatter (Thousands Separator)?
给数字添加千分位分隔符，按不同国家格式显示，以及万/亿和 K/M/B 缩写。Format numbers with thousands separators, locale styles, and compact forms (K/M/B, 万/亿).
如何使用「数字千分位格式化」？How do I use the Number Formatter (Thousands Separator)?
在「数字千分位格式化」中，填写「数字」、「小数位(空=保持)」等参数，结果会随输入实时计算并显示在下方。In the Number Formatter (Thousands Separator): Fill in "Number", "Decimals (blank = keep)"; results are recalculated instantly as you type.
计算精度如何？How precise are the results?
「数字千分位格式化」使用 JavaScript 双精度浮点数（约 15–16 位有效数字）；极大或极小的数值可能存在精度误差。The Number Formatter (Thousands Separator) uses double-precision floating point (about 15–16 significant digits); very large or very small values may lose precision.
「数字千分位格式化」免费吗？需要注册吗？Is the Number Formatter (Thousands Separator) free? Do I need an account?
「数字千分位格式化」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 Number Formatter (Thousands Separator) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.