✖️ 十六进制乘法计算器Multiply Hex Numbers
把两个或多个十六进制数相乘：每行一个或用空格、逗号、*、× 分隔，支持任意位数、负数和 0x 前缀；可同时显示十进制结果。适合学习十六进制运算，数据在本地处理。Multiply two or more hexadecimal numbers. One per line or separated by spaces, commas, * or x; any length, negatives and 0x. Optionally show decimal. Handy for hex arithmetic. Processed locally.
使用说明与常见问题How-to & FAQ
「十六进制乘法计算器」是什么？What is the Multiply Hex Numbers tool?
把两个或多个十六进制数相乘：每行一个或用空格、逗号、*、× 分隔，支持任意位数、负数和 0x 前缀；可同时显示十进制结果。适合学习十六进制运算，数据在本地处理。Multiply two or more hexadecimal numbers. One per line or separated by spaces, commas, * or x; any length, negatives and 0x. Optionally show decimal. Handy for hex arithmetic. Processed locally.
如何使用「十六进制乘法计算器」？How do I use the Multiply Hex Numbers tool?
在「十六进制乘法计算器」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。例如输入「0x2 0x3」，得到「6」。Type or paste two or more hex numbers, one per line or separated by spaces, commas, * or x (0x prefixes and minus signs are fine). The product 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.
乘号可以用哪些？Which multiply signs work?
*、×、·，或每行一个数；两个数字之间的 x 也当乘号（2x3 = 6）。0x 前缀里的 x 不算乘号，所以 0x2 0x3 = 6。乘号两边都必须有数，像 A* 或 *A 这样缺一个数会提示错误，而不是只返回 A。*, × or ·, or one number per line; an x between two digits also multiplies (2x3 = 6). The x of a 0x prefix is not a multiply sign, so 0x2 0x3 = 6. A multiply sign needs a value on both sides: A* or *A gives an error instead of just returning A.
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「十六进制乘法计算器」中输入 A ⏎ 2，输出为：14（⏎ 表示换行）。For example, the Multiply Hex Numbers turns the input A ⏎ 2 into: 14 (⏎ marks a line break).
有哪些选项可以调整？What options can I adjust?
「十六进制乘法计算器」的设置：「最少位数（可选）」可留空；可勾选：「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 Multiply Hex Numbers — "Minimum width (optional)" optional; tick boxes: "Also show decimal", "Also show binary", "Add 0x prefix", "Space every 4 digits". Changing any option regenerates the result with the new setting.
「十六进制乘法计算器」免费吗？需要注册吗？Is the Multiply Hex Numbers free? Do I need an account?
「十六进制乘法计算器」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 Multiply 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.