1. What is a Nits Calculator?

Definition: This calculator measures brightness in nits (candelas per square meter) based on luminous intensity and surface area.

Purpose: It helps display manufacturers, lighting designers, and video professionals quantify screen brightness.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( N \) — Brightness in nits (cd/m²)
• \( C \) — Luminous intensity in candela (cd)
• \( A \) — Surface area in square meters (m²)

Explanation: The candela value is divided by the surface area to determine brightness per unit area.

3. Importance of Nits Calculation

Details: Nits measurement is crucial for display quality assessment, ensuring proper visibility in different lighting conditions.

4. Using the Calculator

Tips: Enter the luminous intensity in candela and the surface area in square meters. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical nit value for displays?
A: Standard LCDs: 200-300 nits, HDR TVs: 1000+ nits, Smartphones: 400-1000 nits, Outdoor displays: 2000+ nits.

Q2: How does nits differ from lumens?
A: Lumens measure total light output, while nits measure brightness per unit area.

Q3: When would I need to calculate nits?
A: When designing displays, comparing screen brightness, or ensuring compliance with visibility standards.

Q4: How do I measure candela?
A: Use a photometer or lux meter at a known distance, then calculate using inverse square law.

Q5: Does viewing angle affect nits?
A: Yes, brightness often decreases at wider angles, so measurements should specify the viewing angle.