Resolution Converter Free Online
Calculate megapixels, total pixel count, and aspect ratio from width × height in pixels. Recognizes common resolution labels: HD (720p), FHD (1080p), QHD (1440p), 4K UHD, 8K UHD.
Pro — bulk batch conversion, API access, history & favorites
API access · Priority queue · Team workspace
How It Works
Pick Your Unit or Preset
Choose your home unit using the dropdown or load a one-click preset. Defaults are sensible engineering values so you can start right away.
Enter a Value
Type a number — conversion runs as you type. Many tools have multiple input boxes (W & H, size & speed) — edit any of them and the rest recompute.
Read Every Equivalent
Below the main result, the All Units / Summary panel shows your value across every supported unit, with engineering context (FPS, ping, EM band, etc.) where relevant.
Resolution Converter Features
Screen Standards
Recognizes HD, FHD, QHD, 4K UHD, 5K, 8K UHD plus DCI 4K (cinema), SVGA, XGA, SXGA, and common phone/camera resolutions.
Photography
Calculates megapixels exactly the way camera specs report. 24 MP camera = 6000 × 4000 px. 12 MP iPhone = 4032 × 3024.
Aspect Ratio
Computes the ratio in lowest terms via GCD. 1920 × 1080 → 16:9. 4032 × 3024 → 4:3. Plus the decimal value (1.7778 for 16:9).
17 Presets
One-click load of common screen, social, phone, and camera resolutions.
Live Conversion
Edit width/height and all five outputs update instantly.
100% Private
All math runs in your browser.
Free vs Pro
| Feature | Free | Pro |
|---|---|---|
| Full resolution conversion | ||
| Live conversion | ||
| All-units result panel | ||
| Bulk CSV / Excel conversion | — | |
| REST API access | — | |
| Custom precision settings | — |
Frequently Asked Questions
3840 × 2160 = 8,294,400 pixels = 8.29 MP. DCI 4K (4096 × 2160) is 8.85 MP. So a "4K monitor" is barely over 8 megapixels — small compared to a 24 MP camera.
UHD (3840 × 2160) is the consumer/TV standard. DCI 4K (4096 × 2160) is the cinema standard from the Digital Cinema Initiatives. UHD is 16:9; DCI is closer to 17:9.
7680 × 4320 = 33,177,600 pixels = 33.18 MP. Roughly 4× the pixel count of 4K and 16× the pixel count of 1080p. Storage and processing scale accordingly.
16:9. The GCD of 1920 and 1080 is 120, so 1920/120 : 1080/120 = 16 : 9. Decimal: 1.7778.
Most full-frame and APS-C sensors are 3:2 aspect ratio. 6000 × 4000 = 24,000,000 = 24 MP. Phone sensors are usually 4:3 (e.g. 4032 × 3024 = 12 MP).