ℂ 复数计算器Complex Number Calculator
复数加减乘除、模、辐角、共轭和极坐标形式，输入格式如 3+4i。Add, subtract, multiply and divide complex numbers; modulus, argument, conjugate and polar form.
使用说明与常见问题How-to & FAQ
「复数计算器」是什么？What is the Complex Number Calculator?
复数加减乘除、模、辐角、共轭和极坐标形式，输入格式如 3+4i。Add, subtract, multiply and divide complex numbers; modulus, argument, conjugate and polar form.
如何使用「复数计算器」？How do I use the Complex Number Calculator?
在「复数计算器」中，填写「z₁」、「运算」、「z₂」等参数，结果会随输入实时计算并显示在下方。In the Complex Number Calculator: Fill in "z₁", "Op", "z₂"; results are recalculated instantly as you type.
计算精度如何？How precise are the results?
「复数计算器」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 Complex Number Calculator uses double-precision floating point (about 15–16 significant digits); very large or very small values may lose precision.
「复数计算器」免费吗？需要注册吗？Is the Complex Number Calculator free? Do I need an account?
「复数计算器」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 Complex Number 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.