Hi, I'm Mehdi.
I built this tool because I was tired of doing mental math every time I opened Audible.
The "To Be Read" pile is stressful. The feeling of falling behind is real.
A few years ago, I started a challenge to read 100 books a year. To achieve this while working a full-time job, I realized I had to optimize everything. I turned audiobooks from a passive entertainment activity into a high-performance learning channel.
But there was one problem. Every time I looked at a 12-hour book, I would freeze. "If I listen to this at 1.5x speed during my commute, can I actually finish it this weekend?"
I built this calculator to answer that simple question instantly. I am not a corporation; just a guy who really loves books and hates wasted time.
Efficiency First
We don't just calculate time; we calculate opportunity. Saving 3 hours on a book means time for a podcast, a workout, or family.
Learning Focus
Speed isn't just about rushing. It's about matching the speed of the narrator to the speed of your brain.
The Science Behind Speed
Ever wonder why your mind wanders during a slow audiobook? It's not ADHD; it's a bandwidth mismatch. I wrote a detailed article about this, but here is the summary:
When you listen at 1.0x speed, you are feeding your Ferrari-brain with dropper-speed fuel. By listening at 1.5x to 2.0x, you bridge this gap and force your brain to engage fully.
Who uses this tool?
Commuters
Trying to finish a chapter before arriving at work.
Students
Reviewing hours of lecture recordings efficiently.
Lifelong Learners
Aiming to read 50+ books a year like I do.
Podcasters
Estimating episode lengths for editing.
How It Works
The math is simple, but doing it in your head is annoying. Our calculator uses a precise formula:
Original Duration ÷ Playback Speed = New Duration
We round everything to the nearest second so you can plan your listening schedule with precision. Whether you are using Audible, Spotify, Apple Books, or LibriVox, the math remains the same.
My Privacy Promise
In an era where every click is tracked, I keep it simple:
- No Data Storage: Your calculations happen in your browser (Client-side). I don't save your book data.
- No Accounts: I don't want your email. You don't need to login to do math.
Ready to optimize your reading?
I share my exact routine for reading 100 books a year on the blog.