15:00
15 minutes
Press Start to begin
Space Start / Pause · R Reset
| Start time | +15 min | −15 min |
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15 minutes is the NASA-validated power nap window, the minimum recommended daily meditation duration in MBSR research, and the cooking time for most quick weeknight pasta dishes.
A 15-minute guided meditation session, body scan, or mindfulness breathing practice.
Homemade pizza at 250°C, roasted vegetables, thick-cut salmon, or a full sourdough crust bake.
A focused reading block — you can read 6–8 pages of a textbook or 15–20 pages of a novel in 15 minutes.
NASA research found that a 10–20 minute nap — timed to end before deep sleep — improves alertness by up to 34% and performance by 16%. A 15-minute timer is the ideal nap alarm.
Start your 15 minutes countdown in one click — no setup, no ads, no account needed.
The timer loads pre-set to 15:00. No configuration required.
Click Start or press Space. The ring begins counting down immediately.
Press Space to pause and resume. Press R to reset to 15:00.
Three clear beeps play when the countdown ends. The ring turns green.
Common questions about 15-minute intervals, time calculations, and this timer.
Add 15 to your current minute. If the result exceeds 59, subtract 60 and add 1 hour. Example: 2:50 PM + 15 = 3:05 PM.
15 minutes equals exactly 900 seconds, or one quarter of an hour.
A 2022 study in the British Journal of Sports Medicine found that 15 minutes of moderate-to-vigorous exercise per day significantly reduced all-cause mortality risk. 15 minutes daily is meaningful — far better than nothing, and a proven gateway to longer habits.
A quarter of an hour is 15 minutes, or 900 seconds. One hour has four quarter-hours: at :00, :15, :30, and :45.
At an average brisk pace of 5–6 km/h you cover 1.25–1.5 km in 15 minutes. The NHS recommends a minimum of two 15-minute brisk walks daily for cardiovascular health.
Say 'Alexa, set a timer for 15 minutes.' For multiple simultaneous timers say 'Alexa, set a pasta timer for 15 minutes' — Alexa supports named timers on most Echo devices.
Pasta with sauce, stir-fried vegetables with protein, scrambled eggs, quesadillas, pan-fried fish fillets, grilled chicken thighs, and most rice dishes can all be completed within 15 minutes with preparation done.