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Free online timer

45 minute timer
No sign-up. No ads.

Forty-five minutes with an alarm at the end. No account, no download.

45 minutes remaining of 45 minutes

Keeps time in a background tab. Works on a phone. Share one countdown with a room if more than one person needs it.

45 minutes

Why forty-five minutes.

Forty-five minutes is the length of a lesson, a therapy hour and a serious block of deep work. It is long enough that the first ten minutes of settling in do not eat the session.

✦ What it is for

What people set a 45 minute timer for.

A long focus block

For work with a slow runway, forty-five beats twenty-five. Take ten minutes off at the end rather than five.

A lesson or lecture

The standard teaching hour almost everywhere, and the standard overrun.

Training sessions

Long enough for a proper warm-up, the work and a cool-down.

Exam practice

Most paper sections are timed at forty-five or an hour. Practising untimed is practising something else.

✦ How to

How to set a 45 minute timer.

1

Open this page

It is already set to forty-five minutes, so there is nothing to type and nothing to choose. The timer is the first thing on the page.

2

Press start

The countdown begins immediately and the ring starts emptying. The tab title counts down too, so you can watch it from another tab.

3

Leave it running

Switch tabs, lock the phone, let the laptop sleep. It is counting to a fixed end time, not adding up ticks, so it stays correct.

4

Get the alarm at zero

A chime repeats until you stop it, and a browser notification arrives if you allowed one. Reset restarts the 45 minute timer, or switch to another length in one click.

✦ The timer itself

Built to be trusted, not just to tick.

Most free timers are an interval and a beep. Under a background tab, an interval is the first thing a browser throttles.

Accurate in a background tab

It counts to a real end time rather than adding up ticks, so a hidden tab, a locked phone or a sleeping laptop cannot make it drift. Come back and it already shows the right number.

A visual countdown

The ring empties as the time goes, which reads from across a room and suits anyone who does not carry an accurate sense of elapsed time. Full screen turns it into a wall clock.

An alarm that repeats

A chime at zero, repeated rather than sounded once, plus a browser notification if you allow one. Mute is a single click, and the tab title counts down either way.

No account, no ads, no tracking wall

Nothing here is gated. There is no interstitial before the timer starts and no video playing next to it.

Keeps the screen awake

While it runs it asks the browser not to dim the display, so a phone propped on a counter still shows the time left.

Adjustable mid-run

Add a minute or five without restarting, pause and resume where you left off, or switch to another length in one click.

✦ Other lengths

Need a different timer?

✦ More than one person

Timing a room, not just yourself?

Create a countdown, send the link, and every browser that opens it ends on the same second — with a pause that stops the whole room. Still no account, still nothing to install.

✦ After the alarm

A timer tells you when to stop.
It cannot tell you what it was for.

This page will still be here tomorrow, free, and for a lot of people that is the whole relationship. But a countdown is only the last five minutes of a decision that started somewhere else, and the useful question is not how long you sat down for. It is whether the sitting down added up to anything.

EvyOS is where that part lives. The same timer, attached to a real task, a habit you are keeping or a skill you are logging hours against, so a 45 minutes session becomes a record instead of a moment. Goals hold projects, projects hold tasks, and the practice you put in is counted rather than remembered.

Questions

45 minute timer, answered.

For work that takes a while to get into, usually yes. Twenty-five minutes suits starting; forty-five suits continuing. The honest answer is that it depends on the task, which is why EvyOS lets you set the block length rather than picking one for you.
It repeats rather than chiming once, and it will also send a browser notification if you allow it. For anything you must not sleep through, use a phone alarm as well.
No. No account, no card, no ads.

The 45 minutes is the easy part.
Keeping the habit is not.

EvyOS holds the goals, projects, tasks, habits and skills the timer is in service of, and counts the sessions you actually did.

Start for free