Solve the quote
Starter clue: V = E
Decoder — write your answer under each cipher letter:
- A
- B
- C
- D
- E
- F
- G
- H
- I
- J
- K
- L
- M
- N
- O
- P
- Q
- R
- S
- T
- U
- V
- W
- X
- Y
- Z
Type a sentence of your own and this page turns it into a cryptogram you can print: every letter swapped for another one, a decoder strip to write in, and an answer key on a page of its own. Free, no sign-up, and your words never leave your browser.
Nothing you type is sent anywhere. This is a static page. The letters are swapped by a few kilobytes of JavaScript running inside your own browser, and there is no server on the other end to receive anything. Whatever you write — a pupil's name, a family joke, a verse — stays on your machine.
Your cryptogram
Starter clue: V = E
Decoder — write your answer under each cipher letter:
How often each cipher letter appears. In ordinary English the commonest letters run E T A O I N S H R D L U.
A CRYPTOGRAM IS A SENTENCE WITH EVERY LETTER SWAPPED FOR ANOTHER ONE.
Full key — A=T B=X C=V D=U E=Y F=B G=M H=P I=O J=H K=A L=Z M=J N=L O=W P=F Q=N R=Q S=C T=R U=I V=E W=K X=G Y=S Z=D
The puzzle above was made when this page was built, so there is always one to look at. Type your own sentence and press Make the cryptogram to replace it.
A spelling list, a line from the set text, or a message that tells the class where the trip is going. Cryptograms make children read letter patterns instead of whole words, which is exactly the skill you want them practising. Print one sheet, photocopy the rest.
Hide a message in a party bag, run a Christmas or Easter puzzle at the table, or set the clue that leads to the next stop on a treasure hunt. A cryptogram generator is much faster than working the swaps out on paper yourself.
Encode a verse for the week, make a take-home sheet, or set a group activity that needs nothing but a pencil. Nothing you type is uploaded, which matters when the words are personal.
Set the size to extra large, keep the sentence short and give away two letters. The result is a puzzle that is genuinely readable — 34 pt type with a writing line under every letter.
Starting letters. A cryptogram with no help at all is a real piece of work. Giving away the commonest letter turns a twenty-minute puzzle into a ten-minute one, and giving away three makes it approachable for a nine-year-old. The letters are shown the way newspapers show them, cipher letter first: Q = E means every Q you see is really an E.
Punctuation. Keeping commas, apostrophes and full stops makes a puzzle noticeably easier, because an apostrophe near the end of a word is almost always followed by S or T. Turn punctuation off for a cleaner-looking, harder sheet.
The frequency table. This counts how often each cipher letter appears in your puzzle. Compared against the usual order of English letters — E T A O I N S H R D L U — it is the fastest way in for someone who has never solved one.
The answer page. It always starts on a fresh page and never shares one with the puzzle, so you can hand out the puzzle without handing out the solution. For a sentence of ordinary length that means the puzzle is page one and the answers are page two. On screen it stays folded away until you open it.
No. The encoding happens in your browser with a small piece of JavaScript that is part of this page. There is no server to send it to — this whole site is a set of static files. Your text is never transmitted, never stored and never seen by us. You can check: put the page in aeroplane mode or unplug the network and the maker still works.
A cryptogram is a sentence in which every letter has been swapped for another letter, consistently, all the way through. If E becomes Q in one word, E is Q in every word. No letter ever stands for itself, which is a rule this generator enforces for you. Solving one means working out the swap from the letter patterns.
Somewhere between 40 and 150 letters is the sweet spot. Shorter than about 30 letters and there is not enough repetition to work from, so the puzzle becomes guesswork. Longer than about 200 letters and it stops fitting on one page in large print.
Yes. Press “Shuffle the code” as many times as you like. Each press picks a brand new letter swap, so the same sentence comes out looking completely different. Handy when you want two groups in the same room working on the same quote without copying.
It is free and there is no account, no email box, no watermark and no advert. Print what you make, photocopy it, hand it round the class or the senior centre. We pay for this the same way we pay for the rest of the site: some people like the puzzles enough to buy the iPhone app.