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4 Minute Timer
A 4:00 countdown, set and ready: press Start (or Space) and the alarm rings after four minutes. A full Tabata workout, a cup of tea or a short presentation fits neatly inside.
4:00
Ready
Presets
Shortcuts: Space start / pause · R reset · F fullscreen. Add ?m=3 to the address for a custom length. Keep this tab open; the countdown stays accurate in the background.
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How to use the 4 Minute Timer
- Press Start or hit the Space bar. The 4:00 countdown begins immediately.
- Want a reminder midway? Tick Soft chime at the halfway mark to hear a gentle chime at 2:00 left.
- Fine-tune the length with the ± buttons or pick another preset.
- Choose an alarm sound and volume, then press Play test sound to check you can hear it.
- When time is up, press Stop alarm or Space. Press R to reset to 4:00.
How long is 4 minute?
| Measure | 4 Minute equals |
|---|---|
| Minutes | 4 min |
| Seconds | 240 s |
| Milliseconds | 240,000 ms |
| Hours | 0.06667 h |
| Share of a day | 0.278% (1/360 of a day) |
| Walking at 5 km/h (3.1 mph) | about 0.33 km (0.21 mi) |
| Speaking at 130 words per minute | about 520 words |
| Reading at 230 words per minute | about 920 words |
What you can do in 4 minute
| Activity | Why 4 minute works |
|---|---|
| Tabata workout | Eight rounds of 20 s work + 10 s rest add up to exactly 4 minutes |
| Black tea | Many black teas taste best after 3 to 5 minutes of steeping |
| Pitch or demo | About 520 spoken words, enough for a tight product demo |
| Medium-boiled egg | Around 4 to 5 minutes for a jammy yolk |
| Mile run goal | The famous four-minute mile barrier |
| Plank challenge | A tough but popular core endurance goal |
How the countdown keeps exact time
When you press Start, the timer records the end moment as start time + 240,000 ms on the browser's monotonic clock (performance.now()). Every screen update subtracts the current time from that end moment instead of counting ticks, so a throttled background tab or a busy computer cannot make it fall behind. Pausing stores the time left, and Resume sets a new end moment that far in the future.
Frequently asked questions
How do I set a timer for 4 minutes?
The timer opens at 4:00. Press Start or the Space bar and it counts down to zero, then rings until you press Stop alarm.
How many seconds are in 4 minutes?
4 minutes is 240 seconds or 240,000 milliseconds, which is 1/15 of an hour.
Why is Tabata 4 minutes long?
The original Tabata protocol is 8 rounds of 20 seconds of maximum effort followed by 10 seconds of rest: 8 × 30 s = 4 minutes.
When does the halfway chime play?
If switched on, a soft chime plays once at 2:00 left.
Can I add more time?
Yes. Press +1 min at any time, or −1 min to shorten it. When the alarm rings, +1 min works as a snooze.
Does it stay accurate in a background tab?
Yes. It calculates the time left from the clock and the stored end time, so background throttling cannot slow it down.
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