Paste a message and say how you want it to sound instead: friendlier, firmer, more formal, more casual, or any tone you can describe. Hemmingway rewrites it in that tone. What you are asking for, the dates and the details all stay. The greeting, the word choice and the sign-off move.
It changes the tone and stops there. A firmer version will not gain a deadline or a threat you did not write, and a friendlier one will not gain an apology. If the new tone needs a new fact, add it to your text first. It is for messages that go out under your own name, not for disguising someone else's writing as yours.
What makes it work
- Describe the tone from where it is now. "Firmer, but still polite" works better than one word such as "professional", which means something different to everyone. Two at once is fine: "firm but kind".
- Say who will read it. Firm with a contractor and firm with your sister are not the same message.
- Know where tone lives. Mostly in four places: the opening line, the verbs, how the request is put, and the last line. "I was wondering if you might" and "Please" ask for the same thing.
- Firm is not rude. A firm message says what you need, plainly. It does not need capital letters or a list of what went wrong.
An example
Asked to make this message to a contractor who is three weeks late firmer, but still polite:
Hi Marek, just checking in again about the fence, no rush but it would be great to know when you might be able to finish it? Thanks so much!
a version along these lines is what to expect:
Hi Marek, the fence is now three weeks late. Please tell me which day you will finish it. Thanks.
The question is the same one. It has lost "no rush", which was not true, and it has not gained a deadline, because none was given.
The four tones people ask for
| Tone | What changes |
|---|---|
| Friendlier | A warmer opening, contractions, the request put as a question |
| Firmer | The point first, fewer hedges, a plain statement of what you need |
| More formal | Full sentences, no slang, a proper greeting and close |
| More casual | Shorter lines, everyday words, the stiff phrases gone |
If the tone is right and the text is only stiff, use the AI humanizer.
Common questions
Is the tone changer free?
Yes. Hemmingway has a free trial with no card needed, and this tool opens it with your answers filled in. You sign up once, and the new version is written in the chat.
Does changing the tone change what my message says?
It should not. The tool is told to keep every fact and request and to add none. Read the result against your own text before it goes out, the dates above all.
Will it sound like AI?
It is built not to. Hemmingway-1, the model behind it, came first on sounding like a person in our own blind test, Human-Likeness. It still helps to read it aloud and change any word you would not use.
Can it make a message sound less harsh?
Yes. Ask for "softer" or "less blunt" and say who it is to. For an email, the email rewriter also puts the request first and adds a greeting and sign-off. To turn someone down without souring things, see how to say no politely.