← AFTRWRK
AFTRWRK
Free Tools
Utilities for producers, DJs, and music learners. Free, no sign-up required.
⏱
DJ / Production
Delay Calculator
Enter your BPM and instantly get tempo-synced delay times — straight, dotted, and triplet. Tap any value to copy.
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🎹
Music Theory
Chord Reference
Visual chord diagrams for guitar and piano across all 12 keys — with an interactive circle of fifths to switch keys instantly.
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🎼
Music Theory
Scale Reference
Explore scales across all 12 keys — Major, Minor, modes, pentatonic, blues, and more. Includes a circle of fifths, piano keyboard, and diatonic chord builder.
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🎵
Music Theory
Progression Builder
Pick a key and mode, then click diatonic chords to build a progression. Includes presets like I–V–vi–IV, ii–V–I, and more. Copy in one click.
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