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Reading & writing calculators

Calculators for reading time, words per minute, word-to-page conversion, audiobook length, and sentence counting. Paste text or enter a word count.

What for
Blog post to a reading time estimatePaste an article and see how long the average reader needs. Useful before you hit publish, because a 12-minute post and a 3-minute post get different kinds of attention.2,400 wordsTimed reading test for your own speedRead a passage, stop the clock, and see where you fall. Most adults land around 238 WPM. Knowing your own number turns every other calculator on this page from a guess into a personal estimate.Read 108 words in 25 secEssay word count to page countA professor says five pages double-spaced. You have 1,200 words. Is that enough? This tells you immediately, for single-spaced, double-spaced, and three other common formats side by side.5,000 words
All 7
Which one

Which calculator does what

  • Reading time calculator

    Paste an article and see how long the average reader needs. Uses 238 WPM, the median from a meta-analysis of 190 studies.

  • Words per minute calculator

    A timed reading test. Read a passage, stop the timer, and see where you fall against population benchmarks.

  • Reading speed calculator

    Like the reading time calculator, but with a slider so you can set your own speed instead of using the population average.

  • Words to pages converter

    Shows page counts for five common formats side by side. Useful when an assignment says "five pages double-spaced" and you have a word count.

  • Audiobook length calculator

    Converts a manuscript word count to hours and minutes of narration at 150 WPM, the standard pace for professional audiobook recording.

  • Book length calculator

    Classifies your word count into flash fiction, short story, novelette, novella, novel, or epic. Based on SFWA definitions and trade publishing conventions.

  • Sentence counter

    Counts sentences, words, characters and paragraphs as you type, plus average words per sentence and the longest one. No button to click.

Mechanism

How the calculations work

Most calculators on this page are division. The reading time calculator divides your word count by 238 words per minute. The audiobook calculator divides by 150. The words-to-pages converter divides by the standard words-per-page for each format. The sentence counter is the exception: it splits text into sentences using Intl.Segmenter (or a regex fallback), then counts. No machine learning is involved anywhere on this page, and there is nothing to train or fine-tune.

The word counter splits text on whitespace and counts the resulting tokens. It works for any language that uses spaces between words. For Chinese, Japanese, and other scripts without word-separating spaces, the count will be wrong.

Limits

What these calculators do not account for

  • Reading speed varies with the text. A legal contract takes longer per word than a novel, but every calculator here treats all words equally.
  • The 238 WPM figure is a population median. Your speed may differ by 50% or more depending on the subject and how carefully you read.
  • Page counts assume standard margins and a 12-point serif font. Different formatting changes the real number.
  • Audiobook length depends on the narrator. The 150 WPM default is an industry average, not a rule.