Words to Tokens Calculator (LLM Token Estimate)
Convert words or characters to an estimated token count, and see what fits in a context window.
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Words to Tokens Calculator (LLM Token Estimate) by TheCalcTools
How the Words to Tokens Calculator (LLM Token Estimate) works
Language models read text as tokens: pieces of words. For typical English text, one token is about four characters or three quarters of a word, so 100 tokens ≈ 75 words.
Other languages and code usually need more tokens per word. Exact counts depend on the model’s tokenizer; use the provider’s token-counting tool when precision matters.
The formula
Worked example
Using the default values shown in the calculator:
| Count by | Words |
|---|---|
| Number of words | 1500 |
| Number of characters | 9000 |
| Language | English (about 0.75 words per token) |
| Context window (tokens) | 200000 |
- 1,500 English words × 1.33 ≈ 1,995 tokens.
- A 200,000-token context window holds about 301 pages of 500 words.
Result:
| Estimated tokens | 1,995 |
|---|---|
| Pages (500 words each) | 3.0 |
| Share of the context window | 1.00% |
| Pages that fit in the context window | 301 |
Frequently asked questions
How many tokens is 1,000 words?
About 1,300 to 1,400 tokens of English prose.
Do spaces and punctuation count?
Yes, they are part of tokens; that is included in the four-characters-per-token average.
Sources and further reading
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.