🎧 有声书倍速时长计算器Audiobook Speed Calculator

使用说明与常见问题How-to & FAQ

「有声书倍速时长计算器」是什么？What is the Audiobook Speed Calculator tool?

输入有声书或播客的时长和播放倍速，算出实际收听时间和节省的时间；也可以反过来求在规定时间内听完所需的倍速，或按每天收听时长算出几天能听完。Enter an audiobook or podcast length and playback speed to see the actual listening time and time saved — or find the speed needed to finish in a set time, or how many days it takes at so many minutes a day.

如何使用「有声书倍速时长计算器」？How do I use the Audiobook Speed Calculator tool?

在「有声书倍速时长计算器」中，填写「计算」、「时长：小时」、「时长：分钟」、「播放倍速」、「想在多少小时内听完」等参数，结果会随输入实时计算并显示在下方。In the Audiobook Speed Calculator: Fill in "Calculate", "Length: hours", "Length: minutes", "Playback speed", "Finish within (hours)"; results are recalculated instantly as you type.

倍速后的时长怎么算？How is the time at a speed calculated?

实际时长 = 原时长 ÷ 倍速。10 小时 30 分的有声书用 1.5 倍速，需要 630 ÷ 1.5 = 420 分钟，即 7 小时，节省 3 小时 30 分。Listening time = length ÷ speed: a 10 h 30 min book at 1.5× takes 630 ÷ 1.5 = 420 minutes, 7 hours, saving 3 h 30 min.

所需倍速为什么向上取到 0.01？Why is the speed needed rounded up?

播放器通常按 0.05 或 0.1 调节倍速，工具给出向上取整到 0.01 的值保证能按时听完，并同时给出精确值。Players usually step speed by 0.05 or 0.1, so the result is rounded up to 0.01 to make sure you finish in time, with the exact value alongside.

和时区有关吗？Do time zones matter?

无关。「有声书倍速时长计算器」只计算时长，没有日期或钟点输入，也不读取设备时间，所以时区和夏令时不影响结果。No. The Audiobook Speed Calculator works only with durations; it has no date or clock-time input and never reads the device clock, so time zones and daylight saving time do not affect the result.

「有声书倍速时长计算器」免费吗？需要注册吗？Is the Audiobook Speed Calculator free? Do I need an account?

「有声书倍速时长计算器」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 Audiobook Speed 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.