Free Music & Writing Tools
These tools are for musicians, podcasters, writers and puzzle makers. Transpose a chord chart, tap out a tempo, estimate a script's runtime or format a citation. Files stay on your device, so nothing is uploaded.
Featured Music & Writing tools
- Chord Transposer & Capo CalculatorTransposes a pasted chord chart to a new key or capo position.
- BPM Tap Tempo & Key AnalyzerMeasures BPM by tapping and shows compatible keys on the Camelot Wheel.
- Screenwriting Script TimerEstimates runtime from a .fountain or plain-text script with an act-by-act breakdown.
- BibTeX to Citation ConverterConverts a BibTeX entry into eight citation styles including APA 7th and MLA 9th.
Music Theory & Practice
3 toolsChords, keys and tempo for practice and performance.
- Musicians
Chord Transposer & Capo Calculator
Paste a chord chart, pick your target key or capo position, and get the transposed chart instantly - chords above the right syllables.
- Musicians / Students / Composers
Piano Chord Finder
Click notes on an on-screen keyboard to identify the chord name, or type a chord name to see which keys to press. Seventh chords, inversions, extended chords.
- DJs / Producers
BPM Tap Tempo & Key Analyzer
Tap spacebar to measure BPM with live averaging and a pulse metronome. Enter your track's key to see compatible keys on the Camelot Wheel for harmonic mixing.
Audio & Recording
3 toolsRoom acoustics, podcast file sizes and playlist cleanup.
- Home Studio Builders
Acoustic Room Mode Calculator
Enter room dimensions to find resonant frequencies, worst bass clusters, Schroeder frequency, and optimal listening position.
- Podcasters / Audio Engineers
Podcast Audio File Size Calculator
Enter duration and encoding to get file size in MB, monthly storage cost, and bandwidth at your download count. Format comparison table.
- Music / IPTV
M3U Playlist Cleaner & Exporter
Upload your IPTV or music M3U playlist, remove duplicates, rename channels, filter by group, and export a clean file.
Writing & Publishing
3 toolsScript timing, e-book metadata and academic citations.
- Screenwriters
Screenwriting Script Timer
Paste a .fountain or plain-text script to estimate runtime, act-by-act breakdown, scene histogram, and structure feedback.
- Self-Publishers
EPUB Metadata Editor
Fix title, author, ISBN, cover, and description in your browser. KDP readiness checklist, live e-reader mockup.
- Academia
BibTeX to Citation Converter
Paste from Google Scholar and get APA 7th, MLA 9th, Chicago, Vancouver, IEEE, Harvard, and Nature citations instantly. 8 styles, no signup.
Word Games
2 toolsBuild crosswords and solve anagrams.
- Puzzle Creators / Teachers
Crossword Grid Generator
Set grid size, click cells to toggle black squares with 180-degree rotational symmetry enforced. Download as SVG for print or design software.
- Crossword Solvers / Scrabble / Word Games
Anagram & Crossword Pattern Solver
Enter letters with underscores as wildcards to find matching words, or unscramble letters. Works offline.
Which tool do I need?
- Move a song to a singer's keyChord Transposer & Capo Calculator
- Identify a chord from the notes you playPiano Chord Finder
- Find the tempo of a trackBPM Tap Tempo & Key Analyzer
- Find the resonant frequencies of a roomAcoustic Room Mode Calculator
- Estimate a podcast file size and storage costPodcast Audio File Size Calculator
- Remove duplicates from an M3U playlistM3U Playlist Cleaner & Exporter
- Estimate the runtime of a screenplayScreenwriting Script Timer
- Fix the title, author or cover of an EPUBEPUB Metadata Editor
- Format a reference in APA or MLABibTeX to Citation Converter
- Lay out a symmetrical crossword gridCrossword Grid Generator
- Unscramble letters or match a crossword patternAnagram & Crossword Pattern Solver
Music & Writing FAQ
How do I transpose a chord chart?
Paste the chart into the chord transposer and pick a target key or a capo position. It returns the transposed chart with the chords kept above the right syllables.
How do I find the BPM of a song?
Tap the spacebar in time with the track in the BPM tap tempo tool. It averages your taps live, and entering the key shows compatible keys on the Camelot Wheel for harmonic mixing.
How large will a podcast episode file be?
Enter the duration and the encoding in the podcast file size calculator. It returns the file size in MB, monthly storage cost and bandwidth for your download count.
Which citation styles does the BibTeX converter support?
It produces APA 7th, MLA 9th, Chicago, Vancouver, IEEE, Harvard and Nature citations from a BibTeX entry, for eight styles in total.
Can I fix an EPUB without Calibre?
Yes. The EPUB metadata editor changes the title, author, ISBN, cover and description in your browser and includes a KDP readiness checklist.
Are my scripts and playlists uploaded?
No. The tools read files in your browser, so they stay on your device.
Related categories
Last updated: September 30, 2026