Does 2x speed save more time than 1.5x?

Yes. At 2x speed you save 50% per audiobook compared to 33% at 1.5x. A 10-hour book at 1.5x takes 6h 40m (saves 3h 20m). The same book at 2x takes 5h (saves 5h). 2x saves exactly 50% more time per book than 1.5x.

Time Savings Calculator 6 min read Updated July 2026

How Much Time Does 1.5x Speed Save?

At 1.5x speed, you save exactly 33% of your listening time on every audiobook. A listener who spends 2 hours per day at 1.5x saves 475 hours per year - equal to 19.8 full days. This page shows the exact time-saved figures per book, per week, per month, and per year, with the formula to calculate any scenario.

How much time does 1.5x speed save per audiobook?

Direct Answer

At 1.5x speed, you save exactly 33% of the original audiobook length. A 10-hour audiobook saves 3 hours 20 minutes. A 15-hour audiobook saves 5 hours. A 20-hour audiobook saves 6 hours 40 minutes. Formula: Time Saved = Original Length × 0.333.

Original Length	At 1.5x Speed	Time Saved	Books/Month at 1hr/day
5 hours	3h 20m	1h 40m	6 books
8 hours	5h 20m	2h 40m	4 books
10 hours	6h 40m	3h 20m	3 books
12 hours	8h 00m	4h 00m	2–3 books
15 hours	10h 00m	5h 00m	2 books
20 hours	13h 20m	6h 40m	1–2 books
24 hours	16h 00m	8h 00m	1 book
30 hours	20h 00m	10h 00m	1 book

To find your exact adjusted listening time at 1.5x for any audiobook, use the audiobook speed calculator - enter any duration in hours, minutes, and seconds.

How much time does 1.5x speed save per week?

Direct Answer

If you listen to 1 hour of audiobooks per day at 1.5x speed, you save 2 hours 20 minutes per week versus listening at 1x. If you listen to 2 hours per day, you save 4 hours 40 minutes per week - almost an extra half-day of listening time reclaimed.

Daily Listening Time	Weekly Saving at 1.5x	Weekly Saving at 2x
30 min/day	1h 10m	2h 30m
1 hr/day	2h 20m	5h 00m
1.5 hr/day	3h 30m	7h 30m
2 hr/day	4h 40m	10h 00m
3 hr/day	7h 00m	15h 00m

How much time does 1.5x speed save per year?

Direct Answer

At 2 hours of daily audiobook listening at 1.5x speed, you save 475 hours per year - equal to 19.8 full days. At 1 hour per day, you save 237 hours - nearly 10 full days. You can also finish 47 additional 10-hour audiobooks per year compared to listening at 1x.

Daily Listening	Hours Saved/Year at 1.5x	Days Saved/Year	Extra 10hr Books/Year
30 min/day	60h	2.5 days	6 extra books
1 hr/day	121h	5 days	12 extra books
1.5 hr/day	182h	7.6 days	18 extra books
2 hr/day	243h	10.1 days	24 extra books
3 hr/day	365h	15.2 days	36 extra books

How the annual saving is calculated

At 1.5x, you save 33.3% per hour of listening. 1 hour/day × 365 days = 365 hours/year total listening. 365 × 0.333 = 121 hours saved. At 2 hours/day: 730 × 0.333 = 243 hours saved per year.

How does 1.5x speed saving compare to 2x speed?

Direct Answer

At 2x speed, you save 50% per audiobook - exactly 50% more than 1.5x per book. A 10-hour audiobook at 1.5x takes 6h 40m (saves 3h 20m). At 2x, it takes 5h (saves 5h). Moving from 1.5x to 2x saves an additional 1h 40m on every 10-hour audiobook.

Speed	10hr Book Takes	Time Saved	% Saved
1.0x	10h 00m	0 min	0%
1.25x	8h 00m	2h 00m	20%
1.5x ⭐	6h 40m	3h 20m	33%
1.75x	5h 43m	4h 17m	43%
2x	5h 00m	5h 00m	50%
2.5x	4h 00m	6h 00m	60%
3x	3h 20m	6h 40m	67%

What is the formula to calculate time saved at 1.5x speed?

Direct Answer

Time Saved = Original Length × (1 − 1 ÷ Speed). At 1.5x: Time Saved = Original Length × 0.333. For a 12-hour audiobook: 12 × 0.333 = 4 hours saved. Adjusted listening time = 12 ÷ 1.5 = 8 hours. This formula works for any speed.

Time Saved = Original Length × (1 − 1 ÷ Speed)

At 1.5x: multiply original length by 0.333 · At 2x: multiply by 0.5 · At 1.25x: multiply by 0.2

Examples using the formula:

6-hour audiobook at 1.5x: 6 × 0.333 = 2 hours saved → adjusted time: 6 ÷ 1.5 = 4 hours
9-hour audiobook at 1.5x: 9 × 0.333 = 3 hours saved → adjusted time: 6 hours
12-hour audiobook at 1.5x: 12 × 0.333 = 4 hours saved → adjusted time: 8 hours
15-hour audiobook at 1.5x: 15 × 0.333 = 5 hours saved → adjusted time: 10 hours

How many more audiobooks can I finish per year by listening at 1.5x?

Direct Answer

At 1 hour of daily listening, 1.5x speed lets you finish 547 hours of audiobook content per year instead of 365 hours - 49.6% more content in the same time. For 10-hour audiobooks, that is 54 books at 1.5x versus 36 books at 1x - 18 extra books per year.

Daily Listening	Books/Year at 1x (10hr avg)	Books/Year at 1.5x	Extra Books/Year
30 min/day	18 books	27 books	+9 books
1 hr/day	36 books	54 books	+18 books
2 hr/day	73 books	109 books	+36 books

Calculate Your Exact Time Saved

Enter any audiobook length and get your adjusted listening time at 1.5x, 2x, or any custom speed - instantly and free.

Use the Audiobook Speed Calculator →

Frequently Asked Questions

How much time does 1.5x speed save on a 12-hour audiobook?

At 1.5x speed, a 12-hour audiobook takes exactly 8 hours - saving 4 hours of listening time. Formula: 12 ÷ 1.5 = 8 hours. Time saved = 12 × 0.333 = 4 hours. Use the audiobook speed calculator to find adjusted times for any length.

Does 1.5x speed really save a full day per year?

At 1 hour of daily listening, 1.5x saves 121 hours per year - equal to 5 full days of listening time. At 2 hours per day, you save 243 hours - over 10 full days. The calculation is: (Daily Hours × 365) × 0.333 = Annual Hours Saved. You can track your listening hours directly in apps like Audible and Libby.

Is the time saved at 1.5x speed the same for every audiobook?

Yes. At 1.5x speed, you always save exactly 33% regardless of the audiobook's original length. A 3-hour book saves 1 hour. A 30-hour book saves 10 hours. The percentage saving is constant at any given speed - only the absolute hours change with book length.

How much time does 1.25x speed save compared to 1.5x?

At 1.25x speed, you save 20% per audiobook. At 1.5x, you save 33%. On a 10-hour audiobook: 1.25x saves 2 hours, while 1.5x saves 3 hours 20 minutes. Moving from 1.25x to 1.5x saves an additional 1 hour 20 minutes per 10-hour book.