➕ 十六进制加法计算器Add Hex Numbers
把两个或多个十六进制数相加：每行一个或用空格、逗号、加号分隔，支持任意位数、负数和 0x 前缀；可同时显示十进制和二进制结果，设置最少位数补 0。适合学习十六进制运算和检查作业，数据在本地处理。Add two or more hexadecimal numbers. One per line or separated by spaces, commas or plus signs; any length, negatives and 0x prefixes work. Also show decimal and binary, pad to a minimum width. Handy for learning hex arithmetic and checking homework. Processed locally.
使用说明与常见问题How-to & FAQ
「十六进制加法计算器」是什么？What is the Add Hex Numbers tool?
把两个或多个十六进制数相加：每行一个或用空格、逗号、加号分隔，支持任意位数、负数和 0x 前缀；可同时显示十进制和二进制结果，设置最少位数补 0。适合学习十六进制运算和检查作业，数据在本地处理。Add two or more hexadecimal numbers. One per line or separated by spaces, commas or plus signs; any length, negatives and 0x prefixes work. Also show decimal and binary, pad to a minimum width. Handy for learning hex arithmetic and checking homework. Processed locally.
如何使用「十六进制加法计算器」？How do I use the Add Hex Numbers tool?
在「十六进制加法计算器」中，把内容粘贴或输入到上方输入框，按需设置「最少位数（可选）」，结果会实时显示在下方，点击「复制结果」即可复制。Type or paste two or more hex numbers, one per line or separated by spaces, commas or plus signs (0x prefixes and minus signs are fine). The sum appears below as you type; set "Minimum width (optional)" to pad it with leading zeros, and click "Copy result" to copy it.
怎样输入多个数？How do I enter several values?
每行一个，或用空格、逗号、分号分隔；可加 0x 前缀，下划线会被忽略。One per line, or separated by spaces, commas or semicolons; a 0x prefix is fine and underscores are ignored.
可以算负数吗？Can I add negatives?
可以，在数前面加 - 号；结果用“负号 + 十六进制”表示。Yes — put - in front; the result uses a sign plus hex digits.
位数有限制吗？Is there a length limit?
没有固定上限（输入框上限为页面字符上限），结果按任意精度整数计算。No fixed limit beyond the page's input cap; results use arbitrary-precision integers.
结果精确吗？Is the result exact?
精确。全部用大整数（BigInt）计算，不经过浮点，所以几百位的十六进制数也不会丢失任何一位。Yes. Everything uses big integers (BigInt) with no floating-point, so even hex numbers hundreds of digits long lose no digits.
输入和输出是什么样的？What does the input and output look like?
例如在「十六进制加法计算器」中输入 A ⏎ 5，输出为：F（⏎ 表示换行）。For example, the Add Hex Numbers turns the input A ⏎ 5 into: F (⏎ marks a line break).
有哪些选项可以调整？What options can I adjust?
「十六进制加法计算器」的设置：「最少位数（可选）」可留空；可勾选：「数中间允许空格」、「同时显示十进制」、「同时显示二进制」、「加 0x 前缀」、「每 4 位加空格」。改动任一选项后结果会按新设置重新生成。Settings in the Add Hex Numbers — "Minimum width (optional)" optional; tick boxes: "Allow spaces inside a number", "Also show decimal", "Also show binary", "Add 0x prefix", "Space every 4 digits". Changing any option regenerates the result with the new setting.
「十六进制加法计算器」免费吗？需要注册吗？Is the Add Hex Numbers free? Do I need an account?
「十六进制加法计算器」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 Add Hex Numbers is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.