Timers
20 Minute Timer
A twenty-minute countdown timer with an alarm at zero — built for a power nap, a focused study sprint, or timing a quick bake without watching the oven.
Countdown timer
Alarm and notifications
A short tone plays automatically when the timer ends, synthesised in your browser — nothing is downloaded or streamed.
Works even if you switch tabs
This timer tracks the clock time it should finish at, not a count of ticks, so switching tabs or locking your device never makes it run late. The tab title above shows the time left even while you’re looking at something else.
Twenty minutes: the power nap length
Twenty minutes is the length most commonly recommended for a power nap, because it sits in the sweet spot of being long enough to feel genuinely restorative while staying short enough to end before you drop into deep sleep — waking from deep sleep is what causes the groggy, disoriented feeling known as sleep inertia, and a nap kept close to twenty minutes largely avoids it. The alarm matters here more than in most other uses of this timer, because the entire point of a power nap depends on it actually ending on schedule; without a firm wake-up signal, a planned twenty-minute nap has an easy habit of quietly becoming ninety. Set it, lie down, and trust the alarm rather than your own sense of time, which is exactly what's least reliable while falling asleep.
A twenty-minute language drill
Twenty minutes is a workable length for a single focused vocabulary or grammar drill session — long enough to get through a meaningful stack of flashcards or exercises, short enough that concentration doesn't fade the way it does across a longer, unstructured study block. Active recall drilling (quizzing yourself rather than just re-reading notes) is mentally demanding in a way passive review isn't, so a visible countdown genuinely helps by giving the session a firm end point — it's easier to push through the least enjoyable part of a drill, like irregular verb conjugations, when you know exactly how much longer it lasts. Reset and run a second twenty-minute block after a short break rather than stretching one session long.
Roasting vegetables without hovering over the oven
Twenty minutes is a common roasting time for smaller or thinner-cut vegetables at a hot oven — asparagus spears, broccoli florets, thin-sliced peppers — typically somewhere in the 400–425°F range, while denser vegetables cut into larger chunks usually need thirty minutes or longer at the same heat. The gap between well-roasted and burnt at that kind of temperature is often just a few minutes, and twenty minutes is exactly long enough to get pulled into something else in the kitchen and lose track entirely. Set the timer the moment the tray goes in, and use the extra minute button if a stir or a flip partway through pushes the total time slightly past the original twenty.
A twenty-minute focused work sprint
Twenty minutes also works as a single sprint of focused work on one specific task — longer than the typical short Pomodoro interval but still short enough to commit to without negotiating with yourself first. It suits a task with a clear, boundable scope: drafting a section of something, clearing a specific part of an inbox, or making a first pass at a problem before switching to something else. The fixed end matters here for the same reason it matters for a nap or a drill — a task without a deadline tends to expand to fill whatever time is available.
Beyond twenty minutes
Twenty minutes sits between the fifteen-minute and thirty-minute presets. If your particular nap, drill or roast needs a length in between — or well past either end — the custom hours/minutes/seconds fields next to the one-tap presets hold any exact duration with identical alarm behaviour to the preset.
Questions
- Why is twenty minutes considered the ideal nap length?
- Twenty minutes is a commonly recommended length for a power nap because it's generally long enough to feel restorative but short enough to end before you drop into deep, slow-wave sleep — waking up out of deep sleep is what causes the groggy, disoriented feeling called sleep inertia, and a nap kept to around twenty minutes mostly avoids it. Setting a real alarm matters more for a nap than almost anything else this timer times, because the entire strategy depends on the nap actually ending on schedule rather than sliding into an hour-long sleep by accident. If twenty minutes consistently isn't enough for you, going longer intentionally — 90 minutes, a full sleep cycle — is the usual alternative recommendation rather than drifting in the uncomfortable middle ground.
- How long should a focused language-learning drill session run?
- Twenty minutes is a length commonly used for a single focused vocabulary or grammar drill session, long enough to work through a meaningful set of flashcards or exercises but short enough to sustain real concentration, which matters more for language drilling than for passive review since active recall is mentally demanding in a way that just re-reading notes isn't. Running the drill against a visible countdown rather than an open-ended session helps in a specific way: knowing there's a fixed end makes it easier to push through the least enjoyable parts of a drill, like verb conjugation, instead of quietly switching to easier material once the session starts feeling long.
- What temperature and time roasts vegetables in twenty minutes?
- Twenty minutes is a common roasting time for vegetables cut into smaller or thinner pieces at a hot oven temperature, typically somewhere around 400 to 425°F — thin-cut items like asparagus, broccoli florets or thinly sliced peppers are the ones that typically finish inside twenty minutes, while denser root vegetables cut into larger chunks usually need thirty minutes or more at the same temperature. Setting a timer rather than relying on smell or a guess matters because the gap between perfectly roasted and burnt at a high oven temperature is often only a few minutes, and twenty minutes is short enough that it's easy to get distracted by something else in the kitchen and miss the window entirely.