**This audiobook speed calculator is created to help listeners estimate the duration of an audiobook based on various factors. **

The **audiobook length calculator** take into account elements such as the **book’s length**, **narration speed**, and **playback speed** to provide accurate time estimates.

## Audiobook Speed Calculator

This calculator helps you determine the new length of an audiobook based on the playback speed.

Formula:

New Length = Original Length / Playback Speed

Book Length (words) | Narration Speed (WPM) | Playback Speed | Audiobook Length |
---|---|---|---|

50,000 | 150 | 1x | 5 hours 33 minutes |

50,000 | 150 | 1.5x | 3 hours 42 minutes |

50,000 | 160 | 1x | 5 hours 12 minutes |

80,000 | 150 | 1x | 8 hours 53 minutes |

80,000 | 150 | 2x | 4 hours 27 minutes |

100,000 | 160 | 1x | 10 hours 25 minutes |

100,000 | 160 | 1.25x | 8 hours 20 minutes |

120,000 | 155 | 1x | 12 hours 54 minutes |

120,000 | 155 | 1.75x | 7 hours 22 minutes |

200,000 | 150 | 1x | 22 hours 13 minutes |

200,000 | 150 | 2.5x | 8 hours 53 minutes |

- For a 50,000-word book narrated at 150 WPM:
- At 1x speed, it takes 5 hours 33 minutes
- At 1.5x speed, it takes 3 hours 42 minutes

- Comparing narration speeds for a 50,000-word book:
- At 150 WPM, it takes 5 hours 33 minutes
- At 160 WPM, it takes 5 hours 12 minutes

- For a longer 200,000-word book at 150 WPM:
- At 1x speed, it takes 22 hours 13 minutes
- At 2.5x speed, it drastically reduces to 8 hours 53 minutes

## Audiobook Length Calculation Formula

The basic formula for calculating audiobook length is:

**Audiobook Length = (Number of Words) / (Words per Minute)**

This formula can be expanded to include additional factors:

**Audiobook Length = (Number of Words) / (Words per Minute x Playback Speed)**

In this expanded formula:

**Number of Words**: The total word count of the book**Words per Minute (WPM)**: The narration speed, typically ranging from 150-160 WPM for audiobooks**Playback Speed**: The speed at which the listener plays the audiobook (e.g., 1x, 1.5x, 2x)

## What is Audiobook Speed?

**Audiobook speed** refers to two distinct concepts:

**Narration Speed**: This is the rate at which the narrator reads the book, usually measured in**words per minute (WPM)**. Professional narrators typically read at a pace of 150-160 WPM for clarity and comprehension.**Playback Speed**: This is the rate at which the listener chooses to play the audiobook. Most audiobook apps allow users to adjust the playback speed, with options ranging from 0.5x (half speed) to 3x (triple speed) or more.

Understanding these two aspects of audiobook speed is crucial for accurately estimating listening time and optimizing the audiobook experience.

## How long is a 300 page audiobook?

A typical page contains about **250-300 words** 300-page book would have approximately **82,500 words**

At a standard narration speed of 150 WPM, the calculation would be:

**82,500 words / 150 WPM = 550 minutes or about 9 hours and 10 minutes**

This estimate assumes a standard playback speed of 1x. The actual length may vary based on the book’s content, narrator’s pacing, and any pauses or musical interludes included in the production.

## How long is an audiobook at 1.5 speed?

To calculate the length of an audiobook at 1.5x speed, you simply divide the original duration by 1.5. For example:

- If an audiobook is 9 hours long at 1x speed
- At 1.5x speed: 9 hours / 1.5 = 6 hours

A 9-hour audiobook played at 1.5x speed would take **6 hours** to complete. This increased playback speed allows listeners to consume content more quickly, though it may take some time to adjust to the faster pace.

## How long is a 1 hour audiobook?

A 1-hour audiobook at standard speed (1x) would remain **1 hour** in length. However, if we consider different playback speeds:

- At 1.5x speed: 1 hour / 1.5 = 40 minutes
- At 2x speed: 1 hour / 2 = 30 minutes
- At 0.75x speed: 1 hour / 0.75 = 1 hour and 20 minutes

The ability to adjust playback speed allows listeners to customize their experience based on their preferences and time constraints.

## How many words is a 3 hour audiobook?

To estimate the number of words in a 3-hour audiobook, we need to consider the standard narration speed:

- Assuming a narration speed of 150 WPM
- 3 hours = 180 minutes
- Words in a 3-hour audiobook = 150 WPM x 180 minutes

**150 x 180 = 27,000 words**

A 3-hour audiobook typically contains approximately **27,000 words**. This word count can vary based on factors such as the narrator’s pacing, the complexity of the content, and any additional elements like music or sound effects included in the production.