Circuit Timer
Run a circuit timer using station time, transition time, number of stations and rounds.
How to use Circuit Timer
1. Enter Station Time, Transition Time, Stations, Rounds. 2. Plain numbers mean minutes; labelled d, h, min and sec are accepted. Durations are non-negative and a duration day means 24 hours. Static answers round to seconds, with nonzero subsecond values labelled. No holiday calendar or daylight-saving adjustment is applied. Active phases must be at least one millisecond. Generated schedules support at most 10,000 phases to bound browser work; rest/transition occurs between active phases, not after the final one. The browser runs the timer while the page remains open. Background throttling, sleeping devices and blocked sound can delay visible updates or alerts. Use Pause/Resume where shown and Reset to stop/clear it; this is not a guaranteed alarm or safety clock. 3. Select Start to start the displayed timer. Use its Pause/Resume controls where shown; Reset stops and clears it.
Why use this tool?
Use Circuit Timer when you need circuit duration. Plain numbers mean minutes; labelled d, h, min and sec are accepted. Durations are non-negative and a duration day means 24 hours. Static answers round to seconds, with nonzero subsecond values labelled. No holiday calendar or daylight-saving adjustment is applied. Active phases must be at least one millisecond. Generated schedules support at most 10,000 phases to bound browser work; rest/transition occurs between active phases, not after the final one. The browser runs the timer while the page remains open. Background throttling, sleeping devices and blocked sound can delay visible updates or alerts. Use Pause/Resume where shown and Reset to stop/clear it; this is not a guaranteed alarm or safety clock.
How the calculation works
Schedule positive station work across whole stations/rounds with transition between consecutive stations. Plain numbers mean minutes; labelled d, h, min and sec are accepted. Durations are non-negative and a duration day means 24 hours. Static answers round to seconds, with nonzero subsecond values labelled. No holiday calendar or daylight-saving adjustment is applied. Active phases must be at least one millisecond. Generated schedules support at most 10,000 phases to bound browser work; rest/transition occurs between active phases, not after the final one. The browser runs the timer while the page remains open. Background throttling, sleeping devices and blocked sound can delay visible updates or alerts. Use Pause/Resume where shown and Reset to stop/clear it; this is not a guaranteed alarm or safety clock. Live timer values show the current elapsed/remaining clock; the worked example describes the starting schedule.
Example
Worked example: Station Time = "1 min"; Transition Time = "30 sec"; Stations = 2; Rounds = 1. Result: Round 1 Station 1/2 starts at 01:00; Transition 00:30; Station 2/2 01:00.
Practical tip
Check the circuit input and output convention before reusing the result.
Frequently asked questions
How does Circuit Timer work?
Schedule positive station work across whole stations/rounds with transition between consecutive stations.
Which assumptions and limits apply?
Plain numbers mean minutes; labelled d, h, min and sec are accepted. Durations are non-negative and a duration day means 24 hours. Static answers round to seconds, with nonzero subsecond values labelled. No holiday calendar or daylight-saving adjustment is applied. Active phases must be at least one millisecond. Generated schedules support at most 10,000 phases to bound browser work; rest/transition occurs between active phases, not after the final one. The browser runs the timer while the page remains open. Background throttling, sleeping devices and blocked sound can delay visible updates or alerts. Use Pause/Resume where shown and Reset to stop/clear it; this is not a guaranteed alarm or safety clock.
What should I check before reusing the result?
Keep the page open and check the displayed timer mode. Browser timing and sound are not guaranteed while the device sleeps or the page is backgrounded.