What it does
Pick the kind of letter you need: a formal letter, a complaint, a request, a resignation, a reference or a leave request. The tool sets out your address, the date, the person you are writing to, a subject line, a greeting, the body and a sign-off in the usual order. The body starts as plain example text with [square brackets] where your own facts go. You edit it, watch the preview change, and download Word, PDF or plain text.
Nothing is uploaded and nothing is kept: close the page and the letter is gone, so download it first. Applying for a job instead? Use cover letter. Sending the same letter to many people? Try mail merge, and check the files you send with pre-send check.
How to use it
- Choose the letter type. The subject, greeting, body and sign-off fill in.
- Type your name, address, email and phone.
- Type who the letter is for. If you give a name and the greeting is still the standard one, it becomes “Dear
,”. - Replace every [bracketed] part of the body. The count above the preview tells you how many are left.
- Pick the sign-off and paper size, then download.
What each setting does
- Letter type: swaps in the matching example text. If you have already changed the subject or body, your words stay.
- Greeting: type your own, such as “Dear Ms Jones,”. “Yours faithfully” goes with “Dear Sir or Madam”; “Yours sincerely” goes with a named person.
- Paper: US Letter or A4. Font: sans-serif or serif.
- Download: Word to keep editing, PDF to send, text to paste into an email.
Worked example
Choose Resignation, enter your name, and write “Dear Mr Brown,” as the greeting. Replace the brackets with your job title, company, last day and notice period. A short resignation of about 90 words fits well on one page.
FAQs
Is the wording legal advice? No. These are plain examples. For disputes, contracts or notice rules, check your own agreement or an official source.
Is my letter saved? No. It stays in your browser until you close the page.
Why does the PDF leave out some letters? The PDF uses standard fonts that only draw Latin letters. The Word file keeps every character.
Can I use my own letter type? Yes. Pick Formal letter and write whatever you need in the body.
Where the numbers come from
- The example wording is written by hand for fibub; no AI writes your letter. The layout is one column of plain text with standard fonts so it prints and opens the same everywhere.
Standard scientific values, such as constants, atomic weights and melting points, are facts found in every textbook; we name where ours were checked. If you are an author or publisher and want a value, a credit or a table changed or removed, tell us and we will act quickly.
Last updated 2026-11-10.