UD5 Toolkit
Musical Interval Identifier – Ear Training & Theory Tool
Select two notes to instantly name the musical interval between them. Displays semitone count and common enharmonic spellings. Essential for music theory students.
Tag: Time Interval & Duration Calculator
7+ toolsTabata Timer – 20/10 Interval Workout Clock
A dedicated Tabata protocol timer with 20 seconds of work and 10 seconds of rest for 8 rounds. Includes audio cues and visual countdown for your high-intensity sessions.
Plant Time‑Lapse Interval Calculator – Days to Seconds
Plan a plant growth timelapse: enter the total shoot duration and desired final video length to get the correct interval between shots.
HIIT Interval Timer - Online Custom Work & Rest
Set up high‑intensity intervals with work, rest, and rounds. Audio cues. Sweat without any app. Local only.
Time‑Lapse Interval Calculator – Online Shoot Duration & Playback Length
Plan your time‑lapse by entering desired clip length, fps, and event duration to find the shooting interval and total frames needed. Avoid under‑ or over‑shooting.
Countdown Timer with Laps - Online Workout & Study
Run a countdown timer that automatically repeats for a set number of laps. Great for HIIT, study sprints, or any interval work.
Compound Interval Calculator - Online Daily/Weekly Growth
Compute compound interest with various compounding frequencies (daily, weekly, monthly). Compare APY with simple interest. Local and secure.