# Luminance Brightness Calculator

> Luminance calculator: convert between candela per square meter, nits, foot-lamberts, and other brightness units instantly. Free, runs in your browser, no signup.

- **Canonical URL:** https://boringtoolskit.com/luminance-calculator/
- **Category:** Colors & Design
- **Evidence level:** catalogue
- **Reviewed:** July 26, 2026
- **Last verified:** 2026-10-12
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

---

*Local planning estimate. Verify current terms, rates, and policies before acting.*