Free listening tool

How long will this series take to finish?

Add each book's runtime, set your playback speed and daily listening time, and see the total hours and the date you'll finish the whole series.

Use the runtimes shown in Audible, Libby, Spotify, Apple Books, or another audiobook app for each book in the series.

Books in the series
Book 1
Book 2
Book 3

Total listening time

24hAcross 3 books at 1.5× — finishes in 32 days

The simple math

Sum of runtimes ÷ speed ÷ daily minutes

A trilogy of 10, 12, and 14 hours totals 36 hours. At 1.5× that's 24 hours of actual listening. At 45 minutes a day, that's 32 days — a real finish date, not just a page count.

Add or remove books as your list changes, and the total, listening time, and finish date update immediately.

Beyond one calculation

Keep the whole series together.

Booktrace organizes finished books into collections, so a series stays in order with narrator, cover, and your listening history for each book, not just the box set total.

  • Collections that keep a series in order
  • Per-book history of sessions and speed
  • One library across every app you listen in
Try Booktrace free
Booktrace bookshelf showing a series of audiobooks organized together

Common questions

Series and box sets, explained

How do I calculate total time for a series?

Add up every book's runtime, then divide by your playback speed to get total listening time.

Does speed apply to the whole series?

Yes, one speed applies across every book here. Calculate remaining books separately if your speed changes partway through.

Can I use this for a box set?

Yes. Treat each disc, book, or part as a row and add as many as you need.

How is the finish date calculated?

Total adjusted listening time divided by your daily minutes, rounded up to whole days, added to today.