Find the sentence that reads worse than you meant.
Free AI tone analyzer. Get a written read on how your text lands, with the phrase named, not a label. 12,000 characters, 5 free runs every 24 hours.
The tool
Paste the text and the analyzer reads it and writes back how it lands: where it reads colder than you meant, where it reads more formal than the situation, which phrase is doing the damage, and what the reader is likely to take from it.
It runs on our AI server, so the text is sent over the network. You get 5 free runs per rolling 24 hours, up to 12,000 characters per run, and no account is needed.
Set expectations
Most tone checkers answer with a taxonomy. One claims more than 25 tones including joy, confusion and gratitude, and tags every sentence with one. Another sorts text into 12 categories across professional, casual and emotional families. That approach is fast and it sorts well.
This tool has no taxonomy and no per-sentence labels. It writes sentences back at you. The reason is simple: a label saying "neutral" does not tell you that the third line reads as a reprimand because it opens with "As I already explained". Naming the phrase is the useful part, and a category cannot do it. If you specifically want a tone label to sort on, this is not the tool, and that is better said now than after you spend a run.
How it works
Paste the whole message. Tone is a property of the piece, and a single line pulled out of context reads differently.
The common case
Email is where this question gets asked most, and the worry is almost always the same one: does this read as annoyed when I am not. It usually does, for a small number of repeatable reasons.
Short sentences after a long paragraph read as clipped. An opener that restates what the other person got wrong reads as a correction even when it is meant as context. A one-word sign-off after a request reads as impatience. Passive constructions around a mistake read as an accusation with the name removed. None of those is a spelling error and none of them is caught by a grammar checker, which is why the message goes out sounding wrong.
A straight answer
Plain and direct, with the ask in the first two sentences. Warmth belongs in the greeting and the sign-off, not spread evenly through the middle, because warmth in the middle reads as softening and softening reads as bad news coming.
The mistake people make is reaching for formality when they mean politeness. Formality lengthens sentences and buries the request. Politeness is one clear sentence saying what you need and by when, followed by a thank you. If the analyzer tells you the message reads as stiff, that is usually the cause.
The underlying cause
A model trained to be broadly acceptable converges on a register that offends nobody and commits to nothing: even sentence length, hedged claims, an upbeat closing regardless of the subject. It is the tone of a company announcement, and it appears whether the subject is a product launch or a service outage.
That default is why AI-drafted messages read as insincere rather than rude. Nothing in them is wrong. The tone simply does not move when the content does, and readers notice the gap between the news and the voice delivering it.
Straight answer
No. Tone is a signal about how text reads, not evidence about who wrote it. Corporate human writing hits the same flat register constantly, and a careful AI draft avoids it.
The analyzer is instructed never to claim certainty about authorship, and we make no prediction about what any third-party detector would report. Use the read to fix the message, which is the only thing it can honestly do.
Who it's for
People about to send a difficult email: a complaint, a chase, a refusal, a correction. That is the moment the question is real and the moment a second read is worth most.
Support teams checking a reply template before it goes to thousands of people. Managers checking an announcement. Writers checking whether a page that is meant to sound confident is reading as boastful instead.
FAQ
Everything below is answered in full, nothing to click open.
Paste the text and run it. You get back a written read describing how it lands and which phrases are responsible.
No. There is no tone taxonomy here. The result is written analysis that names the passage rather than filing the text into a category.
No. Some tools return a tone per sentence. This one returns one written read for the whole text.
Yes. 5 free runs per rolling 24 hours, no account and no paid tier.
No. Competing tone checkers advertise unlimited free use. This one is capped at 5 runs per rolling 24 hours.
12,000 characters per run. Empty input is rejected.
Yes. This runs on our AI server, so your text is transmitted. Think about that before pasting a sensitive email.
No. Some tools sharing this keyword analyse pitch and speaking rate in audio. This one reads text only and has no audio path.
No number is produced. Tone is described in words.
No. It reads and reports. Use a rewriter route if you want the text changed.
Usually short clipped sentences after a long paragraph, an opener that restates the other person's mistake, or a one-word sign-off after a request.
Plain and direct, with the ask in the first two sentences. Warmth in the greeting and the close, not spread through the middle.
No. There is no browser extension and no email integration. It works on this page.
No API and no batch mode. One sample per run.
The whole message. A single line taken out of its context reads differently from how it reads in place.
No. It is a signal about the writing, not proof of authorship. Corporate human writing hits the same register.
No. We do not test against detectors and will not guess their verdicts.
This answers how the text sounds to a reader. The style analyzer also covers sentence construction and structural repetition.
Yes. It reads whatever you paste and makes no assumption about who wrote it.
The screen shows when the next one unlocks, 24 hours after the run that used it.
Yes, the same way, in any modern mobile browser.
It is built and checked for English. Other languages may return something usable, held to no guarantee.
Up to 12,000 characters, 5 free runs every 24 hours, no signup required.
Check my tone