Free tools for songwriters and Suno users
Three free tools that run in your browser, with no sign-up and no cap on how often you use them. Nothing you type or open leaves your device.
- Rhyme finderPerfect and near rhymes for any English or Russian word, grouped by syllables.
- Lyrics analyzerRhyme scheme, syllables per line, the Suno character limit and tags Suno misreads.
- Key and BPM finderKey, Camelot code and tempo of an audio file, plus the words to put in a Suno prompt.
Rhyme finder: words that rhyme by sound, not spelling
The line is written, the meaning is right, and the last word has nothing to rhyme with. Often the rhyme you need is spelled nothing like your word, and a Russian lyric needs a dictionary that knows where the stress falls.
Type one word, English or Russian. English words are compared by pronunciation from the CMU Pronouncing Dictionary, from the last stressed vowel to the end, so eight finds late and straight. Russian words are compared with the stress in place across about 95,000 word forms, so огонь finds ладонь and not сон. You get two lists: perfect rhymes grouped by syllable count, and near rhymes on the same vowel.
You get the word for the line and a way to the next one: tap any rhyme to see its rhymes. Every search stays in the address bar, so you can send the link to a co-writer.
Find a rhymeLyrics analyzer: rhyme scheme and syllables per line
A verse can look tidy on the page and still trip Suno up. The first line of verse one runs seven syllables, the first line of verse two runs twelve, and the model rushes the words to fit the same melody. An unknown label like [Guitar Solo] can make Suno start over halfway through, so one file ends up holding two different songs. Usually you hear it after the credits are spent.
Paste the lyrics with their tags. Each section gets its rhyme scheme in letters (ABAB, AABB, ABCB) and every sung line its syllable count. The whole text is measured against Suno's 5,000-character Lyrics limit, with an estimate of how long the track will run. Tags outside Suno's list of section names are flagged, with the safe form to use instead.
You fix the text before the generation, not after it: even out the lines that share a melody, rename the tags Suno would misread, trim what does not fit. The analyzer tells English from Russian on its own.
Analyze your lyricsKey and BPM finder: read the key and tempo of an audio file
You have a reference track and want a Suno song with the same tempo and mood. Typing "128 BPM, A minor" into Style will not get you there: Suno ignores the number, and a named key boxes the melody in.
Drop in an MP3, WAV or another audio file. Your browser decodes it on your device and never uploads it. The tempo comes from the gaps between drum hits and chord attacks, the key from how strongly each of the twelve notes sounds. Next to the main reading you see the relative key and the half and double tempo, because a track most often reads as one of those instead. Tested on recordings with known answers: 32 of 36 Bach preludes and fugues, spanning all 24 keys, came out exact and 2 more landed on the relative key. Of 15 tracks with a stated BPM, 13 came out exact and the other two at half or double time.
You get the key with its Camelot code, the BPM, and tempo and mood words for the Style field (upbeat, bouncy, bittersweet), plus a link to catalog styles in the same tempo range. No file at hand? Tap along to the beat to get the tempo.
Find the key and BPMWhen you need the whole song
These tools work with words and audio you already have. The generators do the writing: complete lyrics from a theme, an arrangement for lyrics you bring, and a full Suno prompt.
See the generators