Are nits and cd/m² the same thing?

Yes — nit and candela per square meter (cd/m²) are the same unit of brightness; 500 nits equals 500 cd/m². The only difference is that "nits" is the term used in consumer marketing, while cd/m² is the formal scientific unit found on manufacturer spec sheets.

What brightness do I need for an office, meeting room, or breakroom display?

Office, meeting room, and breakroom displays typically only need 250–350 nits, since they're indoors and away from direct sunlight. That's enough for wayfinding, welcome messages, or internal comms content without overspending on hardware.

What brightness do I need for an indoor retail display?

Indoor retail displays away from windows typically need 500–700 nits — brighter than an office screen, since retail spaces tend to have more ambient lighting and foot traffic to compete with visually.

What brightness do I need for a shop window display?

Window-facing signage generally needs 1,000–1,500 nits to overcome glare and daylight bouncing off the glass. This sits between standard indoor retail brightness and full outdoor brightness, since the display is indoors but exposed to outside light through the window.

What nits do I need for outdoor digital signage?

Outdoor digital signage typically needs 2,000–4,000+ nits to stay readable in direct sunlight. Anything below that range risks washing out in daylight, especially on screens facing east or west where the sun hits directly.

How does sunlight affect digital signage screen readability?

Sunlight and ambient light wash out lower-brightness screens, making content unreadable if the display's nits rating doesn't match the environment. This is why the same content can look perfectly clear on an indoor office screen at 300 nits but be completely invisible on a window-facing display at that same brightness.

Does the type of content I'm showing change the brightness I need?

No — brightness requirements come from the room's lighting, not the content itself, so the same 250–350 nit indoor guidance applies whether the screen is showing a company town hall, a KPI dashboard, or a welcome message.

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ScreenCloud Article - Nits vs cd/m²: What’s the Difference in Display Brightness Measurements?

Last Updated: 07/22/2026

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Nits vs cd/m²: What’s the Difference in Display Brightness Measurements?

Last Updated: 07/22/2026

Why brightness matters in digital signage
What does cd/m² mean?
What are Nits?
So what’s the difference between Nits and cd/m²?
How bright should a screen be?
What if I already have screens?
Screen brightness + great content = Effective signage
In summary

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If you’ve been researching screens for digital signage, you’ve probably come across brightness terms like nits and cd/m². At first glance, they might seem like two different ways of measuring something technical, but they’re actually one and the same.

Understanding how display brightness works is an important factor when making informed decisions about your signage setup, especially when visibility is at stake. For example, if your screen will be in direct sunlight, or behind a window pane, the screen brightness definitely needs to be factored in.

So, lets dig in, find out what these terms mean, how they affect your display performance, and how to choose the right screen for your environment, whether you're using ScreenCloud or not.

Why brightness matters in digital signage

Brightness refers to how much light a screen emits. It directly affects whether your content is readable, especially in locations with high ambient light, like shop windows or outdoor settings.

Too dim, and your message gets lost. Too bright, and you may end up overspending on power or using an unnecessarily intense screen.

This is why brightness should be part of your digital signage planning, and not just an afterthought.

What does cd/m² mean?

cd/m² stands for candelas per square meter, the official unit for measuring display luminance.

Here’s what that breaks down to:

Candela (cd): a unit of light intensity, roughly equal to the light from a single candle.
Square meter (m²): the area over which the light is spread.

So, a display rated at 500 cd/m² emits 500 candelas of light across each square meter of its screen surface. This unit is common in spec sheets and used by manufacturers worldwide.

What are Nits?

A nit is simply a more user-friendly way of describing the same measurement. 1 nit = 1 candela per square meter.

You might see "nits" more often in marketing materials or product listings, especially from TV and monitor brands. But there’s no difference in value—just a different label for the same measurement.

So what’s the difference between Nits and cd/m²?

There’s no technical difference at all. They represent the same unit of brightness. The only variation is in language:

cd/m² is used in official, scientific contexts.
Nits are used in more casual or commercial settings.

When choosing a screen for your signage, focus on the number itself—not the label.

How bright should a screen be?

The right level of brightness depends on where and how your display is being used. Here’s a general guide:

Office or reception area: 250–350 nits
Indoor retail display: 500–700 nits
Window-facing signage: 1,000–1,500 nits
Outdoor digital signage: 2,000–4,000+ nits

Keep in mind also that brighter screens typically use more power, which may impact running costs if you're managing a large network. Using different displays such as LCD, OLED etc also impacts the power consumption, so its best to check the technical spec of your chosen screen rather than relying simply on the brightness as a guideline.

What if I already have screens?

This is where ScreenCloud really shines.

ScreenCloud is hardware agnostic, meaning you can run our digital signage software on virtually any screen, regardless of brand or brightness level. Whether you're using a high-brightness outdoor display or a standard office monitor, ScreenCloud helps you manage content consistently across all locations.

This makes it easier to:

Reuse existing screens
Mix and match screen types
Scale your signage network flexibly

For full compatibility details, check out our guide to supported devices and media players.

Screen brightness + great content = Effective signage

Even the brightest screen won’t deliver results if your content isn’t well designed or strategically managed. ScreenCloud helps you create, schedule, and measure your digital signage from one simple platform.

With over 80 integrations, a powerful CMS, and tools built for IT and operations teams, ScreenCloud brings the right message to the right screen, wherever that screen happens to be.

In summary

Nits and cd/m² are two terms for the same thing: a measurement of how bright your screen is. The key is knowing how much brightness you need for your environment, and choosing hardware that matches that requirement.

ScreenCloud’s flexible, hardware-agnostic approach gives you freedom to choose the screen that works best for your space, whether it’s a 300-nit monitor in a back office or a 3,000-nit outdoor display facing the high street.

Want help choosing the right setup? Get in touch or explore our digital signage solutions to learn more.