Characters to Words - A Practical Conversion Guide

"How many words is this text in English?" "How many words is 400 characters?" — character count and word count are counted differently and do not simply equal each other. This article lays out how to estimate in English, why word count means different things in Japanese, and how to count accurately.

1. Why character count and word count differ

A word is made up of several characters gathered together, and on top of that there are spaces between one word and the next. That is why the word count is much smaller than the character count. The English hello world is 11 characters (including the space), but its word count is 2.

"How many characters per word" changes with vocabulary, writing style, and how many technical terms appear. For exactly that reason, it is safest to treat converting characters to words as always an approximation.

2. Estimating word count in English

In English, dividing the character count including spaces by about 6 gives you a rough sense of the word count. If you exclude spaces, a word averages around 5 characters, so it comes closer to ÷ 5. The rough guide for common character counts is as follows (an approximation only).

When a limit is set by character count — as with social media posts or meta descriptions — this conversion gives you a sense of roughly how many words you can write.

3. Watch out for "word count" in Japanese

Unlike English, Japanese does not separate words with spaces. As a result, the "word count" changes depending on how you define where to break (what counts as one word). Because the result varies with how you choose the unit in morphological analysis, in Japanese it is common to express length by character count rather than word count.

When you want to satisfy a requirement like "within XX words" from an English paper while writing in Japanese, the reliable approach is to think in terms of the word count after translating into English, or to check how the requirement itself counts.

4. A method you can actually try

The word count of English text can be estimated just by splitting on whitespace and counting. You can check it in the console or in Node.js as follows.

const text = "The quick brown fox jumps over the lazy dog";

// Word count (split on whitespace)
const words = text.trim().split(/\s+/).filter(Boolean).length;
console.log(words); // 9

// Character count (including / excluding spaces)
console.log(text.length);                 // 43
console.log(text.replace(/\s/g, "").length); // 35

If you would rather just paste text into your browser and see character count (with and without spaces), word count, and line count together, use the character count tool below.