nits (nt) to candelas per square metre (cd/m2) conversion

1 nt = 1 cd/m2cd/m2 → nt
Formula
1 nt = 1 cd/m2

Understanding nits to candelas per square metre Conversion

The nit (nt) and the candela per square metre (cd/m²) are two names for the very same SI unit of luminance — "nit" is simply the everyday industry shorthand. Luminance measures how much light a surface emits or reflects toward the eye, and it governs perceived screen brightness in displays, televisions, and signage. Because the two units are identical, this conversion is a straightforward one-to-one relabelling.

Conversion Formula

1 nt=1 cd/m21\ \text{nt} = 1\ \text{cd/m2}

To convert nits to candelas per square metre, multiply by this factor:

cd/m2=nt×1\text{cd/m2} = \text{nt} \times 1

Step-by-Step Example

Convert 25 nits to candelas per square metre.

cd/m2=25×1=25 cd/m2\text{cd/m2} = 25 \times 1 = 25\ \text{cd/m2}

How to Convert nits to candelas per square metre

Because the units are identical, the conversion is a direct relabelling.

  1. Read your nit value: Take the luminance figure expressed in nt.
  2. Keep the number unchanged: Multiply by 1 — the nit and cd/m² are the same unit.
  3. Relabel the units: Write the identical number followed by cd/m².
  4. Worked result: 25 nt × 1 = 25 cd/m².

nits to candelas per square metre conversion table

nits (nt)candelas per square metre (cd/m2)
00
11
22
33
44
55
66
77
88
99
1010
1515
2020
2525
3030
4040
5050
6060
7070
8080
9090
100100
150150
200200
250250
300300
400400
500500
600600
700700
800800
900900
10001000
20002000
30003000
40004000
50005000
1000010000
2500025000
5000050000
100000100000
250000250000
500000500000
10000001000000

What is the nit?

The nit is a unit of luminance used to describe the brightness of light emitted from or reflected by a surface, most familiarly the screens of televisions, monitors, and phones. It is numerically identical to the SI unit, the candela per square metre.

Definition

One nit is exactly one candela per square metre, the luminous intensity of one candela spread over one square metre of projected surface area.

1 nt=1 cd/m21\ \text{nt} = 1\ \text{cd/m}^2

The two units are interchangeable: 1 nt=1 cd/m2=1 lm/(m2⋅sr)1\ \text{nt} = 1\ \text{cd/m}^2 = 1\ \text{lm}/(\text{m}^2 \cdot \text{sr}).

Origin and History

The name "nit" derives from the Latin nitere, meaning "to shine," and came into use in the mid-20th century as a convenient shorthand for the candela per square metre. It remains popular in the display and photometry industries.

Law and Notable Facts

The nit is not an official SI unit name but is exactly equal to the SI candela per square metre, so it carries no ambiguity. Display manufacturers routinely quote peak brightness in nits, with high-dynamic-range (HDR) televisions marketed at 1000 nits or more.

Real-World Examples and Conversions

  • Standard SDR television: about 100 nits reference white.
  • Modern OLED and LCD monitors: 250–600 nits.
  • HDR displays: peak highlights of 1000–4000 nits.
  • 1 nt=1 cd/m2=10−4 stilb≈3.14159 apostilbs1\ \text{nt} = 1\ \text{cd/m}^2 = 10⁻⁴\ \text{stilb} \approx 3.14159\ \text{apostilbs}.

What is the candela per square metre?

The candela per square metre is the SI unit of luminance, measuring the luminous intensity emitted or reflected from a surface per unit area in a given direction. It describes how bright a surface appears to the human eye and is the standard used to specify display and screen brightness.

Definition

Luminance is luminous intensity per unit projected area. One candela per square metre is the luminance of a surface emitting one candela of luminous intensity from each square metre of its projected area.

1 cd/m2=1 cd/m21\ \text{cd/m}^2 = 1\ \text{cd/m}^2

As a derived SI unit it can be written 1 cd/m2=1 lm/(m2⋅sr)1\ \text{cd/m}^2 = 1\ \text{lm}/(\text{m}^2 \cdot \text{sr}), since the candela equals one lumen per steradian.

Origin and History

The candela became one of the seven SI base units in 1948 (as the "new candle"), and luminance in candela per square metre followed as the coherent derived unit. It replaced a patchwork of earlier photometric units such as the stilb, lambert, and foot-lambert.

Law and Notable Facts

The candela per square metre is the internationally sanctioned SI unit of luminance and is colloquially known as the "nit." Its value ties to the modern definition of the candela, fixed by the luminous efficacy of monochromatic 540 THz radiation at 683 lm/W.

Real-World Examples and Conversions

  • A typical computer monitor: 200–350 cd/m².
  • A smartphone in bright sunlight mode: 800–2000 cd/m².
  • Clear daytime sky: several thousand cd/m².
  • 1 cd/m2=1 nit=10−4 stilb1\ \text{cd/m}^2 = 1\ \text{nit} = 10⁻⁴\ \text{stilb}.

Frequently Asked Questions

Is a nit the same as a candela per square metre?

Yes. The nit is exactly equal to one candela per square metre; "nit" is just a shorter trade name for the same SI luminance unit.

How do I convert nits to cd/m²?

No arithmetic is needed — the value is identical. A 400-nit display has a luminance of 400 cd/m².

Why do two names exist for one unit?

"Candela per square metre" is the formal SI name, while "nit" (from the Latin nitere, to shine) became popular shorthand in the display industry.

Do display specs in nits mean the same as cd/m²?

Yes. When a monitor is rated at 1,000 nits peak brightness, that is 1,000 cd/m² by definition.

Does the conversion factor ever change?

No. It is fixed at exactly 1, so nits and cd/m² are always interchangeable.

People also convert

nt to sbnt to asbnt to Lnt to fL

Complete nits conversion table

nt
UnitResult
candelas per square metre (cd/m2)1 cd/m2
stilbs (sb)0.0001 sb
apostilbs (asb)3.141593 asb
lamberts (L)0.0003141593 L
foot-lamberts (fL)0.2918635 fL

Luminance conversions