HDR & Nits Calculator
Understand display brightness levels, HDR tiers, and how nits affect your viewing experience
| Standard | Peak Brightness | Black Level | Color Gamut |
|---|---|---|---|
| SDR | 100-300 nits | Standard | sRGB |
| HDR10 | 1000+ nits | 0.05 nits | Rec. 2020 |
| HDR10+ | 1000-4000 nits | 0.05 nits | Rec. 2020 |
| Dolby Vision | Up to 10000 nits | 0.0001 nits | Rec. 2020 |
| HLG | 1000+ nits | Varies | Rec. 2020 |
Enter Peak Brightness (Nits)
Input your display’s peak brightness specification. You can find this in your monitor’s spec sheet or product page. Typical ranges: SDR monitors are 250-400 nits, while HDR monitors range from 400 to 2000+ nits.
Select Display Type
Choose your panel technology. OLED offers perfect blacks but moderate peak brightness. Mini-LED provides high brightness with good contrast. LCD/LED is the standard technology, while Micro-LED is emerging premium tech.
Choose HDR Format
Select which HDR format your display supports. HDR10 is the base standard. HDR10+ adds dynamic metadata. Dolby Vision is the premium format with scene-by-scene optimization. HLG is designed for broadcast content.
Select Your Environment
Choose where you’ll primarily use the display. Dark rooms need less brightness for good HDR impact. Bright rooms require higher nits. Outdoor use may need 2000+ nits for visibility in sunlight.
Review Your Results
Check your HDR certification level and see how your display compares. The brightness visualizer shows where your display falls on the scale. Review the environment rating to see if your brightness is adequate for your intended use.
Pro Tip: For the best HDR experience, consider both peak brightness AND black levels. A display with 1000 nits but poor blacks may look worse than an OLED with 700 nits and perfect blacks. The contrast ratio matters as much as raw brightness.
What are Nits?
Nits measure display brightness (candelas per square meter). 1 nit = 1 cd/m². Typical SDR monitors are 250-350 nits, while HDR displays range from 400 to 2000+ nits.
HDR Requirements
True HDR requires both high peak brightness AND deep blacks. OLED achieves perfect blacks but lower peak brightness. Mini-LED combines high brightness with good contrast.
Viewing Environment
Bright rooms need higher nits for HDR impact. 1000 nits is excellent for dim rooms. Outdoor displays may need 2000+ nits for visibility.
Display Technology
OLED: Perfect blacks, moderate brightness. Mini-LED: High brightness, good contrast. Micro-LED: Best of both worlds (emerging tech).
Frequently Asked Questions
What nit level is required for a meaningful HDR experience?
DisplayHDR 400 (400 nits peak) provides minimal HDR impact — specular highlights barely separate from midtones. DisplayHDR 600 produces noticeable highlights. True HDR impact — bright sun glare, neon signs, specular reflections — requires 1000+ nits (DisplayHDR 1000). In a dark room, an OLED at 700 nits with near-zero blacks can look more impressive than an LCD at 1000 nits with poor local dimming.
What is the difference between HDR10, HDR10+, and Dolby Vision?
HDR10 uses static metadata — one set of brightness mapping values for the entire video stream — and is the baseline open standard. HDR10+ (Samsung/Amazon) and Dolby Vision (Dolby) both add dynamic metadata that adjusts tone mapping scene-by-scene or even frame-by-frame. Dolby Vision supports up to 10,000 nits in its spec and uses a proprietary pipeline with tighter quality control; HDR10+ is royalty-free. Both dynamic formats produce visibly better highlight detail than static HDR10 when the display and source both support them.
Why does HDR sometimes look worse than SDR on my monitor?
Many budget monitors labeled ‘HDR’ only meet DisplayHDR 400 — they raise peak brightness slightly but have no local dimming zones, so black level and shadow detail worsen in HDR mode. The OS or game forces a different tone map assuming a 1000-nit display, crushing shadows or blowing highlights on a 400-nit panel. True HDR requires local dimming (mini-LED) or self-emissive pixels (OLED) to simultaneously achieve bright highlights and deep blacks.
What is the maximum nit capability of current OLED and mini-LED panels?
Consumer OLED monitors (QD-OLED and W-OLED) typically achieve 250-1000 nits full-screen white and 800-1500 nits peak in small highlight windows, depending on panel generation. Mini-LED LCD panels with dense zone arrays reach 1000-4000 nits sustained peak brightness. Micro-LED and direct-emissive LED displays are emerging at 5000+ nits but remain extremely expensive. Dolby Vision’s spec goes to 10,000 nits in anticipation of future displays.
Does HDR require a specific HDMI or DisplayPort version?
HDR10 static metadata signaling requires HDMI 2.0a or DisplayPort 1.4 at minimum. These versions carry the HDR static metadata (MaxCLL, MaxFALL) in EDID or InfoFrames. Dolby Vision over HDMI requires HDMI 2.0b or higher. HDR10+ over HDMI requires HDMI 2.1. Note that bandwidth for the HDR signal itself depends on resolution and refresh rate, not solely the HDR format — 4K 120Hz HDR10 requires HDMI 2.1 or DP 1.4 with DSC.