A nit is the unit of luminance used to quantify display brightness. One nit equals one candela per square meter (1 cd/m²), so datasheets use both notations interchangeably. It indicates how much light the screen emits per unit area – a higher value means a brighter image and better visibility, especially in bright ambient lighting.
Typical consumer displays and standard monitors offer around 200–350 nits, while industrial, medical and outdoor screens often exceed 1000 nits, with some reaching 2000–3000 nits. High-brightness displays are essential for sunlight-readable devices, although they require more power and generate more heat.
Comparing nit ratings is a useful way to assess how different displays will perform under various lighting conditions.
