Caesar Cipher & ROT13
Encode or decode text with any shift value. ROT13 is shift 13 — click it twice to get back the original.
All 26 shifts (brute-force decoder)
| Shift | Result | |
|---|---|---|
| 1 | Uif rvjdl cspxo gpy kvnqt pwfs uif mbaz eph | |
| 2 | Vjg swkem dtqyp hqz lworu qxgt vjg ncba fqi | |
| 3 | Wkh txlfn eurzq ira mxpsv ryhu wkh odcb grj | |
| 4 | Xli uymgo fvsar jsb nyqtw sziv xli pedc hsk | |
| 5 | Ymj vznhp gwtbs ktc ozrux tajw ymj qfed itl | |
| 6 | Znk waoiq hxuct lud pasvy ubkx znk rgfe jum | |
| 7 | Aol xbpjr iyvdu mve qbtwz vcly aol shgf kvn | |
| 8 | Bpm ycqks jzwev nwf rcuxa wdmz bpm tihg lwo | |
| 9 | Cqn zdrlt kaxfw oxg sdvyb xena cqn ujih mxp | |
| 10 | Dro aesmu lbygx pyh tewzc yfob dro vkji nyq | |
| 11 | Esp bftnv mczhy qzi ufxad zgpc esp wlkj ozr | |
| 12 | Ftq cguow ndaiz raj vgybe ahqd ftq xmlk pas | |
| 13ROT13 | Gur dhvpx oebja sbk whzcf bire gur ynml qbt | |
| 14 | Hvs eiwqy pfckb tcl xiadg cjsf hvs zonm rcu | |
| 15 | Iwt fjxrz qgdlc udm yjbeh dktg iwt apon sdv | |
| 16 | Jxu gkysa rhemd ven zkcfi eluh jxu bqpo tew | |
| 17 | Kyv hlztb sifne wfo aldgj fmvi kyv crqp ufx | |
| 18 | Lzw imauc tjgof xgp bmehk gnwj lzw dsrq vgy | |
| 19 | Max jnbvd ukhpg yhq cnfil hoxk max etsr whz | |
| 20 | Nby kocwe vliqh zir dogjm ipyl nby futs xia | |
| 21 | Ocz lpdxf wmjri ajs ephkn jqzm ocz gvut yjb | |
| 22 | Pda mqeyg xnksj bkt fqilo kran pda hwvu zkc | |
| 23 | Qeb nrfzh yoltk clu grjmp lsbo qeb ixwv ald | |
| 24 | Rfc osgai zpmul dmv hsknq mtcp rfc jyxw bme | |
| 25 | Sgd pthbj aqnvm enw itlor nudq sgd kzyx cnf | |
| 26 | The quick brown fox jumps over the lazy dog |
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Caesar Cipher & ROT13 really free?
Yes. Caesar Cipher & ROT13 is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Caesar Cipher & ROT13 upload my data?
No. Caesar Cipher & ROT13 runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Caesar Cipher & ROT13 is ready to use on desktop or mobile.
Does Caesar Cipher & ROT13 work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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