UD5 Toolkit
Piano Humidity Monitor Reminder β Online Log & Alert
Keep your piano at 40β60% RH. Log readings and get reminders to fill humidifier/dehumidifier.
Musician Utilities & Tuner
29+ toolsDidgeridoo Backpressure Calculator β Online Length & Diameter Playability
Enter length and mouthpiece diameter to get an approximate backpressure index. Helps before you buy.
Frequency Ratio to Cents Converter β Online Microtonal Tool
Convert a frequency ratio (e.g., 3/2) to cents and vice versa. Explore just intonation and microtones.
Historical Pitch Converter β Online A415, A430, A440, A465
Transpose a note between modern concert pitch and common historical pitches. Early music helper.
Fret Position Calculator β Online Scale Length & Number of Frets
Enter scale length and number of frets to get the exact distance from nut to each fret. For building instruments.
Guitar Action Height Checker β Online Feeler Gauge Sim
Select fret and string to see recommended action height in mm/inches. Aim for a pro setup.
Sax/Clarinet Reed Strength Converter β Online Vandoren to Rico etc.
Convert reed strength between different brands (Vandoren, Rico, D'Addario). Crossβreference chart.
Trumpet Alternate Fingering Finder β Online Better Intonation
Enter a note to see standard and alternate fingerings with intonation comments. Improve pitch.
Custom Metronome Accent Pattern Builder β Online Odd Time Signatures
Create a custom click pattern with accents for 5/4, 7/8, or any complex meter. Visual and audio feedback.
Bagpipe Practice Chanter Logger β Online Tune & Tempo Tracker
Log practice sessions, note the tunes played, metronome BPM, and duration. Monitor progress on the pipes.
Djembe Rope Tension Calculator β Online Knots & Length
Estimate how much rope you need to restring a djembe and the number of verticals. Get traditional Mali weave instructions.
Ukulele Strap Button Placement β Online Heel Position Finder
Find the correct spot to drill for a heel strap button. Interactive visual guide with measurements.
Musical Interval Ear Trainer β Online Minor 2nd to Octave
Listen to two notes and identify the interval. Purely local Web Audio synthesis. Sharpen your relative pitch.
Pan Flute Pipe Length Calculator β Online Note & Diameter to cm
Calculate the tube length for each note of a pan flute given inner diameter. Build your own instrument.
Guitar Capo Transposer β Online Fret Chord Change Chart
Select original key and capo position to see the resulting chord shapes. Keep playing in the original key without barre chords.
Harmonica Key Transposer β Online Find Correct Harp for Song
Enter the song's key and playing position (straight/cross harp) to determine which harmonica key to use.
Drumstick Balance Calculator β Online Tip & Taper Preference
Compare stick models by length, diameter, and taper. Find the perfect balance for your playing style.
Didgeridoo Backpressure Guide β Online Bell Diameter & Length Check
Enter didgeridoo dimensions to understand its acoustic backpressure. Helps choose or design a comfortable instrument.
Chord Progression Builder - Online Music Theory Tool
Select a key and build chord progressions (I-IV-V, etc.). Hear them played with simple piano sounds. Great for songwriting inspiration. Local audio synthesis.
Online Guitar Tuner - Browser Microphone Pitch Detection
Tune your guitar using the browser microphone. Detects pitch and shows deviation from standard tuning. No installation, pure client-side audio processing.
Guitar Pick Thickness Guide β Online Style & String Gauge Match
Select playing style (rhythm, lead, strumming) and string gauge to get the recommended pick thickness in mm.
Ukulele String Tension Calculator β Online Note & Gauge Balance
Select tuning, scale length, and string gauge to calculate total tension on the neck. Build custom string sets.
Tap Tempo BPM Detector - Online Find Beats Per Minute
Tap any key to measure beats per minute. Displays average BPM and beat interval in milliseconds. Essential for DJs and music production. No extra permissions.
Drum Shell Fundamental Note Calculator β Online Bearing Edge
Enter drum diameter, depth, and material to find the shell's approximate fundamental note. For tuning reference.
Setlist Builder β Online Drag Songs into Order & Time
Drag songs into a setlist and see total duration. Perfect for planning a concert or DJ set.
Online Metronome with Subdivisions - Precise Rhythm Trainer
Play a metronome with adjustable BPM, time signature, and subdivisions (eighth, triplet, sixteenth). Tap tempo and visual flash. Works offline for practice.
Flute Fingering Chart Interactive β Online Note to Keys Visual
Click a note on the staff and see a visual diagram of the flute keys to press. Supports common alternate fingerings.
Trumpet Mouthpiece Comparator β Online Cup, Throat, Backbore
Compare mouthpiece specifications sideβbyβside. See how changes affect tone and range. Educational for brass players.
Recorder Fingering Chart β Online Baroque & German System
Interactive soprano recorder chart showing which holes to cover for each note. Switch between baroque and German fingering.