Duration Calculator
Find the length of your audio files quickly and accurately.
Drag & Drop your audio file (MP3, WAV, etc.)
or click to browse
summer_mix.mp3
Sample file
podcast_intro.wav
Sample file
Why use Duration Calculator?
Find the length of your audio files quickly and accurately.
Extremely Fast
Files are processed directly in your browser. No server upload means less waiting and lower bandwidth use.
100% Secure & Private
Your audio stays on your device. We use client-side technology so your content is not uploaded to our servers.
Quick, focused results
Get duration, tempo, tags, or other insights without sending your files to a remote server.
Mobile friendly
Use Duration Calculator on any device (phone, tablet, or desktop) without installing an app.
How to use Duration Calculator
Find the length of your audio files quickly and accurately. Follow these steps to get started.
1. Add your file
Upload the track you want to analyze or tag, or use the tool’s input as described on screen.
2. View or edit details
See duration, BPM estimates, metadata, or other results directly in the workspace.
3. Apply or save
Download an updated file or copy the information you need, depending on what this utility offers.
All Audio Tools
Discover our full suite of premium online audio editors.
MP3 Cutter
Trim and cut MP3 and other audio files precisely in your browser.
Change Audio Speed
Speed up or slow down playback without changing pitch options.
Bass Booster
Boost low frequencies to add punch and warmth to your tracks.
Change Audio Volume
Normalize or change loudness of your audio files easily.
Stereo to Mono
Combine stereo channels into a single mono audio track.
Audio Equalizer
Shape tone with a multi-band equalizer for your audio.
Our User Reviews
"I was skeptical of browser audio tools until Duration Calculator. It changed my mind."
Chris Walsh
Radio Host
"For teaching, Duration Calculator is perfect: students can run it on school laptops without installs."
James Khan
Streamer
"Privacy matters for my clients. With Duration Calculator, processing stays local and that’s a huge relief."
Chris Park
Composer