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🍰 小数转分数Decimal to Fraction Converter

把小数精确转换为最简分数(有限小数按 10ⁿ 约分),也可用近似模式把循环小数/无理数近似为分数,支持百分数。Convert decimals to exact simplest fractions (finite decimals via 10ⁿ), or approximate repeating decimals with a max denominator.

使用说明与常见问题How-to & FAQ

「小数转分数」是什么?What is the Decimal to Fraction Converter tool?

把小数精确转换为最简分数(有限小数按 10ⁿ 约分),也可用近似模式把循环小数/无理数近似为分数,支持百分数。Convert decimals to exact simplest fractions (finite decimals via 10ⁿ), or approximate repeating decimals with a max denominator.

如何使用「小数转分数」?How do I use the Decimal to Fraction Converter tool?

在「小数转分数」中,填写「小数」、「模式」、「近似最大分母」等参数,结果会随输入实时计算并显示在下方。In the Decimal to Fraction Converter: Fill in "Decimal", "Mode", "Max denominator (approx)"; results are recalculated instantly as you type.

计算精度如何?How precise are the results?

「小数转分数」使用 JavaScript 双精度浮点数(约 15–16 位有效数字),部分功能使用 BigInt 处理大整数。The Decimal to Fraction Converter uses double-precision floating point (about 15–16 significant digits); some features use BigInt for large integers.

「小数转分数」免费吗?需要注册吗?Is the Decimal to Fraction Converter free? Do I need an account?

「小数转分数」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 Decimal to Fraction Converter is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.

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