Free Tone Checker Online
Check if your message sounds too harsh, passive-aggressive, or might be misunderstood. AI-powered tone analysis that preserves your voice.
✓ Free to use ✓ No sign-up required ✓ 15 checks/day
What Our Tone Checker Detects
Harsh Tone
Detect when your message might come across as too blunt or aggressive.
Passive-Aggressive
Catch phrases like "per my last email" that might seem snarky.
Accusatory Language
Identify when you might be pointing fingers unnecessarily.
Safe to Send
Get confirmation when your message sounds just right.
Tone Examples We Catch
"Per my last email, this should have been done."
"Following up on my previous email about this task."
"Why wasn't this done yet?"
"What's the status on this task?"
"Obviously, you didn't read the requirements."
"I think there might be some confusion about the requirements."
"I shouldn't have to explain this again."
"Let me clarify this point."
Perfect For
Work Emails
Avoid misunderstandings with colleagues and clients. Check before you send.
Slack Messages
Quick messages can be easily misread. Make sure yours land right.
Professional Communication
Maintain professionalism while staying authentic to your voice.
Difficult Conversations
Get feedback on sensitive messages before hitting send.
Tone Checker FAQ
What is a tone checker?
A tone checker is an AI-powered tool that analyzes the emotional tone of your writing. It can detect if your message might sound too harsh, passive-aggressive, accusatory, or unprofessional, helping you communicate more effectively.
Is the tone checker free?
Yes! ToneCheck offers free tone checking with 15 checks per day. No sign-up or credit card required. The tone checker is included with grammar and spelling checking.
How does tone checking work?
ToneCheck uses advanced AI to analyze word choice, sentence structure, and phrasing to determine how your message might be perceived. It flags potential issues without rewriting your entire message, preserving your authentic voice.
Can I check email tone before sending?
Absolutely! ToneCheck is perfect for checking email tone. Use the web tool or the iOS keyboard to check your emails in any app before hitting send.
Does it rewrite my message?
No! Unlike other tools, ToneCheck doesn't rewrite your entire message. It only flags potential issues and offers suggestions. You decide what to change, keeping your authentic voice.
What makes ToneCheck different from Grammarly's tone detector?
ToneCheck focuses on preserving your voice. While Grammarly often suggests complete rewrites, ToneCheck only flags genuine risks and lets you make the final call. It's a safety check, not a rewriting tool.
Check Tone in Any App
Download ToneCheck for iOS to check message tone directly in WhatsApp, Slack, iMessage, Email, and any other app.