💯 分数转百分数计算器Fraction to Percentage Calculator
把分数、带分数或小数转换为百分数，给出精确值（必要时显示循环节）和按指定小数位四舍五入的结果，例如 3/8 = 37.5%，1/3 = 33.(3)%。Turn a fraction, mixed number or decimal into a percentage — exact (with the repeating block if any) and rounded to your chosen decimal places, e.g. 3/8 = 37.5%, 1/3 = 33.(3)%.
使用说明与常见问题How-to & FAQ
「分数转百分数计算器」是什么？What is the Fraction to Percentage Calculator tool?
把分数、带分数或小数转换为百分数，给出精确值（必要时显示循环节）和按指定小数位四舍五入的结果，例如 3/8 = 37.5%，1/3 = 33.(3)%。Turn a fraction, mixed number or decimal into a percentage — exact (with the repeating block if any) and rounded to your chosen decimal places, e.g. 3/8 = 37.5%, 1/3 = 33.(3)%.
如何使用「分数转百分数计算器」？How do I use the Fraction to Percentage Calculator tool?
在「分数转百分数计算器」中，填写「分数」、「保留小数位」等参数，结果会随输入实时计算并显示在下方。In the Fraction to Percentage Calculator: Fill in "Fraction", "Decimal places"; results are recalculated instantly as you type.
怎么把分数化成百分数？How do I convert a fraction to a percent?
百分数 = 分子 ÷ 分母 × 100%。例如 3/8 = 0.375 = 37.5%。Percent = numerator ÷ denominator × 100. For example 3/8 = 0.375 = 37.5%.
可以输入小数吗？Can I enter a decimal?
可以，例如输入 0.125 得到 12.5%。Yes — 0.125 gives 12.5%.
计算精度如何？How precise are the results?
「分数转百分数计算器」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 Fraction to Percentage Calculator uses double-precision floating point (about 15–16 significant digits); some features use BigInt for large integers.
「分数转百分数计算器」免费吗？需要注册吗？Is the Fraction to Percentage Calculator free? Do I need an account?
「分数转百分数计算器」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 Fraction to Percentage Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.