Wake me up in 30 minutes

 

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::
 
 

Other alarms — in a few minutes and for a given day

Alarm clock in 5 minutesAlarm clock in 10 minutesAlarm clock in 15 minutesAlarm clock in 20 minutesAlarm clock in 25 minutesAlarm clock in 45 minutesAlarm clock in an hourAlarm clock in 2 hours
Alarm clock for tomorrowAlarm clock for MondayAlarm clock for TuesdayAlarm clock for WednesdayAlarm clock for ThursdayAlarm clock for FridayAlarm clock for SaturdayAlarm clock for Sunday
Online alarm clock — every hour →Alarm clock for 6:30Alarm clock for 7:00Alarm clock for 8:00

Related tools

Online timerOnline stopwatchCountdownDate calculatorsCalendar and datesBank holidaysAll tools →

How to use the online alarm clock

Half an hour is the unit British scheduling is built around. Television slots, GP appointment blocks, gym classes, train timetables and diary entries all default to it, which makes a thirty-minute alarm one of the most natural intervals to reach for.

In the kitchen it is the standard checkpoint on a roast — the traditional guide of around twenty minutes per 500g means most joints get looked at on the half hour. Elsewhere it covers a pile of ironing, a dog walk, a phone call that was meant to be shorter, or the time between putting the washing on and needing to hang it out.

Setting this preset marks half an hour from the current moment. It is the most used of the fixed intervals here, largely because so much of the day is already divided into thirty-minute pieces.

Common questions

Is half an hour a useful checkpoint for roasting?

It fits the common guide of roughly twenty minutes per 500g, so most joints get checked on the half hour.