> Free word error rate calculator. Paste what you meant to say and what your dictation app typed, and see its word error rate with every wrong, missing and extra word marked.

# Dictation accuracy checker

Paste what you meant to say and what the dictation app typed. You get the word error rate, the same measure speech researchers use, with every wrong, missing and extra word marked.

What you meant to saySend the Datadog review to Meera by Friday, and loop in Kestrel Labs.
What the app typedSend the data dog review to Mira by Friday and Lupin Castrol labs.

Ignore capitals and punctuation

**–**word error rate

**–**words right

**–**wrong words

**–**missing words

**–**extra words

wrong (what you meant, crossed out, then what it typed) · missing · extra

## How word error rate works

Word error rate (WER) is the standard measure of speech recognition. It lines up the two texts with the fewest changes, then counts:

- **Wrong words** (substitutions): the app typed a different word.

- **Missing words** (deletions): a word you said isn't there.

- **Extra words** (insertions): the app typed a word you didn't say.

WER = (wrong + missing + extra) ÷ the words you meant. It can go over 100% when the app adds many words. Everything runs in your browser: nothing you paste is sent anywhere.

This is how we scored six Mac dictation apps in [our dictation accuracy benchmark](https://usecaddie.app/research/dictation-accuracy), where the error rates ran from 7.0% to 25.5% on the same clips. Test your own app on your own words: names, places and the jargon you use are where apps differ most.

## Use this calculator on your site

Free to embed. Paste this where you want it to show:

<iframe src="https://usecaddie.app/tools/embed/dictation-accuracy-checker" title="Dictation accuracy checker" width="100%" height="820" style="border:0;border-radius:16px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px">Dictation accuracy checker by <a href="https://usecaddie.app/tools/dictation-accuracy-checker">Caddie</a></p>

## Related

[Dictation accuracy benchmarkSix Mac apps on the same clips](https://usecaddie.app/research/dictation-accuracy)[Dictation for MacCaddie learns the words in your notes](https://usecaddie.app/mac-dictation/)[Caddie vs Wispr FlowSide by side](https://usecaddie.app/vs/wispr-flow)[More free toolsSpeaking vs typing, Meeting cost](https://usecaddie.app/tools/)