2 hours timer

What a 2-hour timer is good for

Two hours is the length of a standard exam, a feature film, a long-form deep-work session, and many slow-cooked recipes. It is long enough to complete something genuinely substantial in one sitting, which is precisely why it needs a visible countdown: at two hours, pacing matters, and the difference between finishing comfortably and running out of time is almost always how you managed the clock.

• •Timing a two-hour exam or mock paper to build pacing
• •A long deep-work block on a single major deliverable
• •Slow-cooking, roasting, or braising that runs about two hours
• •Capping a gaming, screen, or study session for a child
• •A film, recital, or long event

Pacing a two-hour exam

In a two-hour exam, time management is a skill that earns marks independently of how much you know. The reliable method is to convert the total time into a per-mark budget before you write a word: a 100-mark paper in 120 minutes gives you a little over a minute per mark, which immediately tells you that a 20-mark question deserves roughly 24 minutes and no more. The classic failure is spending too long polishing the questions you find easy and rewarding, then sprinting through high-value questions at the end where the easy marks actually live. A visible two-hour countdown, glanced at against your per-mark plan, keeps you honest: if you are not a quarter through the marks by the half-hour mark, you move on. Leave a deliberate ten-minute buffer at the end for checking, and treat the alarm as the genuine hard stop it will be on the day. Practising with a real two-hour timer is how the pacing becomes instinct rather than panic.

How this 2-hour timer stays accurate

Most browser timers drift, because they count by accumulating small ticks, and browsers deliberately slow those ticks down in background tabs to save battery. This one is different: the moment you press start it records the exact wall-clock time the countdown should end, and every frame it simply measures how long is left until that fixed end time. If you switch tabs, lock your phone, or the tab is throttled, the remaining time is recomputed from the real clock the instant you come back, so a 2-hour timer is still a 2 hours timer rather than however long the throttled ticks happened to add up to. On phones the page asks for a screen wake lock while the countdown is running, where the browser allows it, so the display does not sleep mid-count. The alarm is synthesised in the browser with the Web Audio API, which means there is no audio file to download and the chime is ready the moment you start.

Other timer lengths

Need a different length? These are the timers people most often reach for alongside a 2-hour timer:

• 90 minutes timer
• 1 hour timer
• 45 minutes timer

Frequently asked questions

How should I pace a two-hour exam?

Work out a per-mark time budget first: divide 120 minutes by the total marks. Allocate time to each question by its marks, not its difficulty, leave a 10-minute checking buffer, and treat the timer as a hard stop. Practising with a real timer makes the pacing automatic.

Does the two-hour timer keep running if I leave the tab?

Yes. The end time is fixed when you start, so the remaining time stays correct across tab switches and screen dimming. Keep the page open so the alarm can fire at the two-hour mark.

Can I pause a long timer if I get interrupted?

Yes. Pause preserves the exact remaining time, and reset returns it to the full two hours. That makes it practical for real sessions where interruptions happen.

Does the 2-hour timer work offline?

Yes. Once the page has loaded, the countdown runs entirely in your browser using your device clock, so it keeps working with no connection. The alarm is generated in the browser too, so there is no sound file to download.