Free Letter Writing Tools
Improve your letters with our free, instant analysis tools. No signup required — just paste your text and get results.
Letter Length Checker
Check if your letter is the right length. Get word count, reading time, and a verdict for cover letters, resignation letters, and more.
Letter Tone Analyzer
Analyze your letter's formality and tone. Get a formality score, tone classification, and specific feedback to improve your writing.
Need more than analysis?
LetterCraft AI generates professional letters in 30 seconds — optimized for length, tone, and impact.
Why Use Letter Writing Tools?
A great letter isn't just about what you say — it's about how you say it. The wrong tone can undermine your message, and the wrong length can lose your reader's attention. Our free tools help you catch these issues before you hit send, giving you confidence that your letter will land the way you intended.
Letter Length Checker
Different letter types have different ideal lengths. A cover letter should be 250-400 words, while a resignation letter works best at 150-250 words. Our letter length checker tells you exactly where you stand — word count, character count, reading time, and a verdict based on your letter type. Paste your text and get instant feedback.
Letter Tone Analyzer
Tone matters more than most people think. A complaint letter that sounds too aggressive will be dismissed. A cover letter that sounds too casual won't be taken seriously. Our tone analyzer scores your letter's formality on a 1-10 scale, classifies the overall tone, and gives specific line-by-line feedback so you can adjust before sending. It works with any letter type — cover letters, business inquiries, complaints, and more.
How These Tools Work Together
The best workflow: use our AI letter generator to create your first draft in 30 seconds, then run it through the length checker and tone analyzer to fine-tune. You'll end up with a letter that's the right length, the right tone, and tailored to your specific situation. All tools are free to use with no signup required.