What to Show on a Speaker Timer (and What to Leave Off)

Stage & venue setup11 min readUpdated October 16, 2026

A speaker timer should answer one question at a glance: how long do I have left? Everything on the screen either helps with that or competes with it. Make the remaining time the biggest thing by far, make it readable from the furthest spot the speaker will stand, and back up any colour change with a second cue. Add a segment title or a short message only if the speaker will act on it.

The one number that matters

The remaining time should fill most of the screen. A speaker mid-sentence glances for a fraction of a second; they read the biggest thing on the screen, not the layout.

Show minutes and seconds (12:30), not decimal minutes, and not hours unless a segment really runs past an hour. Seconds feel fussy at 40 minutes out but become essential in the last minute, so most timers show them throughout.

How big do the digits need to be?

There is solid eyesight science behind this, and then there is practical advice.

The science. Snellen eye-chart letters are drawn so that the whole letter's height subtends an angle of 5 minutes of arc (5 arcmin) at the distance the line is rated for (American Academy of Ophthalmology EyeWiki, 2026). The same page describes 20/20 as the theoretical norm for best-corrected vision in a healthy eye under optimal conditions. So the 20/20 size is best read as a threshold, the smallest letter a person with good vision can just recognise, not a comfortable reading size. By the same geometry, 20/40 letters subtend twice that angle, so someone with 20/40 vision needs them twice as big.

The page doesn't give heights for stage distances. Working them out from the 5 arcmin angle (height = distance × tan 5 arcmin) gives the threshold height for 20/20 vision:

Distance from speaker to screen	20/20 threshold height	Practical minimum (our advice)
1 m (lectern)	1.5 mm	1 cm
3 m	4.4 mm	3 cm
5 m	7.3 mm	5 cm
10 m	14.5 mm	10 cm
20 m (back of a large room)	29.1 mm	20 cm

The practical advice. The right-hand column is our own rule of thumb, not a standard: about 1 cm of digit height per metre of distance (roughly an inch per 8 feet). That is about seven times the 20/20 threshold, which leaves room for imperfect eyesight, a quick glance, stage light in the speaker's eyes and the fact that many speakers don't wear their glasses on stage. If in doubt, go bigger: few speakers complain that a clock is too easy to read.

To turn that into a screen size: on a 16:9 screen, the visible picture height is about 49% of the diagonal. A 32-inch TV is about 40 cm tall, so a timer filling a third of the height gives digits around 13 cm, enough for roughly 13 m by the rule above.

Contrast: light digits on a black background

Use bright digits on a black or very dark background. On a stage, a white or light background glows, lights up the speaker's face from below and draws the audience's eye.

The Web Content Accessibility Guidelines give a useful benchmark. They express contrast as a ratio from 1:1 to 21:1 and ask for at least 4.5:1 for normal text and 3:1 for large text at Level AA (W3C, WCAG 2.2), and 7:1 for normal text at the stricter AAA level. These were written for web pages, not stage screens, but they are a sensible floor for any display, and stage glare only makes contrast worse.

Using the WCAG relative-luminance formula, here is how pure sRGB colours compare on pure black (#000000). These are textbook values for the colours named, not the colours of any particular timer, including StageClock's, and real screens, brightness and stage glare will change what a speaker actually sees.

Digits on black	sRGB value	Contrast ratio
White	#FFFFFF	21:1
Yellow	#FFFF00	19.6:1
Green	#00FF00	15.3:1
Red	#FF0000	5.3:1
Darker red	#CC0000	3.6:1
Blue	#0000FF	2.4:1

Two things stand out. Among the usual traffic-light colours, pure red has by far the weakest contrast, so the red state is where digits are hardest to read. And blue on black is a poor choice for anything a speaker needs to read quickly. If you can choose colours, use a bright red rather than a darker one (the darker red above falls below the 4.5:1 line, though large digits only need 3:1), and test the red state from the stage.

The green, yellow, red sequence works for most people. It is a problem for a meaningful number of speakers, because according to the US National Eye Institute the most common type of colour vision deficiency makes it hard to tell red from green (NEI, 2023). A red-green colour-blind speaker may not notice the change from green to red at all.

WCAG's rule for this is simple: colour should not be the only visual means of conveying information. For a timer, add a second cue to every state that matters:

Low time: the digits themselves (a number under 1:00 is unmistakable), or a short text label.
Overtime: a minus sign, an "Overtime" label, or a background change.
Wrap-up: a flashing or full-screen message, not just a colour.

The contrast table above hides a small bonus: yellow and green digits are far brighter than red ones, so the switch to red also makes the screen visibly dimmer. That is not a reliable cue on its own, but it adds to the others.

Countdown or time of day?

For the speaker, countdown almost always wins. Time of day makes them work out "I finish at 10:42, it's 10:37, so I have five minutes" while also giving a talk.

Time of day is useful elsewhere:

For the crew and stage manager, who work to clock times in the run of show.
For open-ended segments, such as a Q&A that ends at a fixed clock time.
For the host or moderator, who needs to know whether the whole session is running late.

If you show both on one screen, make the countdown dominant and the time of day small, and label it.

StageClock is countdown-only. It has no time-of-day clock and no count-up mode, so if your crew needs clock time, use a separate clock.

What happens at zero?

Decide whether the timer stops at 0:00 or keeps counting into negative time. Counting past zero is more useful: the speaker sees how far over they are, and so do the host and the operator, which makes "we need to move on" a fact rather than an opinion. A timer frozen at 0:00 tells nobody whether the speaker is ten seconds over or five minutes over.

Messages: short, specific and expected

A text message from the operator is the most direct cue you have, and the easiest to get wrong. Keep messages to a few words the speaker can take in at a glance and act on:

5 MINUTES
1 MINUTE
WRAP UP NOW
SKIP Q&A
TAKE 2 QUESTIONS
SLOW DOWN
MIC IS OFF
REPEAT THE QUESTION

Tell speakers in the briefing which messages they might see. An unexpected message causes a pause and a puzzled look at the screen, which is worse than no message. The guide to stopping speakers running over time has wording for that briefing.

"Next up" and the segment title

The current segment title confirms to the speaker that the operator has the right talk loaded, which matters in a long programme. "Next up" is mainly for the person waiting in the wings and for the crew. Both should be small; neither should compete with the time.

What to leave off

Logos and sponsor graphics. They take space from the digits and the speaker doesn't need them.
The full run of show. The operator needs it; the speaker needs one number.
Operator notes. Cue reminders for the crew confuse speakers.
Busy or bright backgrounds, animation, and anything that moves except an intentional alert.
Small text of any kind. If it can't be read from the stage, it's clutter.

Bright rooms and dark rooms

Set brightness from the stage, under show lighting. In a dark room, turn it down until the digits are comfortable, so the screen doesn't dazzle or spill light onto the stage floor. With strong front light or daylight, go to full brightness and angle or hood the screen against glare, and check a back-of-room display at the time of day the session actually runs.

A speaker display spec you can copy

Send this to whoever is setting up the screens:

Remaining time as M:SS, filling most of the screen.
Digits at least 1 cm tall per metre from the speaker's furthest position.
Light digits on black; red state tested from the stage.
Every colour state also shown another way (digits, label, minus sign or flashing).
Counts into negative time after 0:00.
Messages: a few words, from an agreed list, on the screen the speaker actually looks at.
Segment title and next up small, nothing else.

For reference, StageClock's colour states are fixed and can't be configured: green above 50% of the segment remaining, yellow from 50% to 10%, red at 10% or less, and overrun at zero, when the timer keeps counting into negative time and the Stage Display shows an "Overtime" badge. Operator messages appear on the Speaker Monitor only, with Wrap Up messages flashing. There are no custom logos, colours or themes.

Where you place the screen matters as much as what's on it; confidence monitor vs podium timer compares the positions. For what a stage clock is and the main types, start with the stage clock guide.

Frequently asked questions

Should the timer make a sound?

Usually not. In a live room, a beep is heard by the audience, can be picked up by stage microphones and ends up on the recording or stream. Keep cues visual for the speaker, and if someone needs an audible cue, give it through an earpiece rather than the room.

Is a speaker timer an accessibility issue?

It can be. A speaker with low vision or colour blindness may not be able to use a standard timer at all. Ask speakers in advance whether they need anything different, such as a larger screen, a closer screen or a person giving hand signals, and for specific needs ask the speaker what works for them rather than guessing.

Key takeaways

Make the remaining time the biggest thing on the screen, as M:SS, counting into negative time after zero.
As a working rule, use digits about 1 cm tall per metre of distance, around seven times the 20/20 recognition threshold, and check from the stage.
Light digits on black; pure red has the weakest contrast of the usual traffic-light colours, so test the red state.
Never rely on colour alone: red-green is the most common colour vision deficiency, so pair every state with a second cue.
Keep messages to a short agreed list, and leave logos, run of show and notes off the speaker's screen.