The formula
books a year = minutes a day × listening days a year × speed ÷ (book length in hours × 60)
Listening days a year is your days a week ÷ 7 × 365. Turn it around to plan a goal:
minutes a day = books × book length × 60 ÷ (listening days a year × speed)
Some habits, over a year (11-hour books)
| Habit | at 1× | at 1.5× |
|---|---|---|
| 20 min, weekdays | 7.9 books | 11.9 books |
| 45 min, every day | 24.9 books | 37.3 books |
| 90 min, every day | 49.8 books | 74.7 books |
Planning a single book? The finish date calculator puts the day you’ll finish in your calendar.