TimerPlanFull screen clock
Clock
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One thing a month worth timing
MonthlyOne thing a month worth measuring or capping with a clock — a payroll trap, a nap length, a meeting that never gets added up. Two sentences and the tool.
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What makes a screen clock readable across a room?
The TimerPlan full-screen clock is built for distance: large tabular digits that never shift sideways as the numbers change, a high-contrast face, and no browser chrome once it is in full screen. Digits that jump as the shapes change are the usual reason a big clock is tiring to look at, and tabular figures — every digit the same width — fix it completely.
The analogue face beside it sweeps rather than ticks, because a hand that moves continuously reads as time passing at a glance, while a ticking one has to be watched.
Twelve and twenty-four hour are a switch rather than a setting to find, and the default follows your browser’s own locale rather than assuming an American one. The screen is kept awake in full screen, which is what stops a spare monitor going dark ten minutes into a shift.
Reading distances, roughly, for the full-screen digits on a typical display:
| Screen | Comfortable reading distance |
|---|---|
| Phone, held | 1–2 m |
| Tablet, propped | 3–4 m |
| 24–27 inch monitor | 6–8 m |
| Television or projector | The room |
Those are the same numbers that decide whether a classroom timer works from the back row, which is why both pages fill the screen the same way.
For a clock that counts rather than tells the time, the online timer counts down and the stopwatch counts up. For other places, the world clock holds a list of cities and the time zone converter converts a single time. To leave a screen on without lighting the room, the black screen is quieter than any clock.
Frequently asked questions
Will it stop my screen going to sleep?
In full screen, yes — the page asks the browser to hold the display awake and releases it when you leave. That is the whole reason a browser clock is usable on a spare monitor at all; without it the screen is dark for most of the day. Some machines also have their own power settings which override this, and a laptop on battery may still dim.
Does the analogue face keep proper time?
It is driven from the same clock as the digits, so yes, to the same accuracy. The hands sweep continuously rather than stepping once a second because that is what a mechanical clock with a seconds hand does, and it is easier to read from a distance — motion is visible before detail is.
Can I leave this running all day?
That is what it is for. Nothing accumulates, nothing is stored and nothing is requested from the network while it runs, so it costs a browser tab and nothing else. On an OLED screen, avoid leaving any static bright image for weeks at a time — the dark background here is deliberately the friendlier choice for that.
Why does it show 24-hour time when I expected AM and PM?
Because it follows your browser’s regional settings rather than a fixed default, and most of the world reads a 24-hour clock. The switch changes it either way, and the choice stays for as long as the page is open. If you want a link that always opens in one of them, the setting travels in the address bar.
How this works
Sources:
Where a big clock earns its place
A spare monitor. The second screen nobody is using is a better clock than any wall.
A kitchen tablet. Readable from the other side of a room, with no app to install.
A stage or a studio. A clock everyone can see settles more arguments than a phone in a pocket.