Speed Up Audio 1.5x
100% free, fast, and runs entirely on your device. No sign up required.
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Why speed up audio to 1.5x?
Speeding up an audio file by 50 percent is perfect when you need to quickly review a recorded meeting or skim through a long podcast. It is fast enough to save you a significant amount of time, but not so fast that the words become a completely garbled mess.
A lot of students use this speed to fly through recorded university lectures. A two-hour lecture only takes 80 minutes when played at 1.5x speed.
How to speed up your track
Upload your audio recording. The tool is permanently locked to increase the tempo by exactly 50 percent. We use a pitch-correction algorithm so that the voices do not sound like chipmunks.
It processes instantly inside your browser. Once it finishes, just hit download and you can listen to your newly accelerated file on your phone or laptop.
Frequently Asked Questions
Will the pitch stay exactly the same?
Yes. By default, the tool applies time-stretching which keeps the pitch exactly the same while forcing the audio to play much faster.
Can you actually understand someone talking at 1.5x?
Yes! It takes your brain a few minutes to adjust, but most people can perfectly comprehend spoken word podcasts and audiobooks at 1.5x speed.
Does this work on M4A files from my iPhone?
Yes. You can upload any standard audio format including MP3, WAV, M4A, and OGG. We will process it and give you a fast MP3 in return.