Resolution Scaler

Compare standard video resolutions and see the exact scale factor from your source size.

Compare video resolutions

Source preset

Source width Source height

Target	Pixels	Aspect	Megapixels	Scale from source
8K UHD	7680 x 4320	16:9	33.18 MP	—
4K UHD	3840 x 2160	16:9	8.29 MP	—
1440p QHD	2560 x 1440	16:9	3.69 MP	—
1080p Full HD	1920 x 1080	16:9	2.07 MP	—
720p HD	1280 x 720	16:9	0.92 MP	—
576p	1024 x 576	16:9	0.59 MP	—
480p SD	854 x 480	16:9	0.41 MP	—
360p	640 x 360	16:9	0.23 MP	—
Vertical 1080	1080 x 1920	9:16	2.07 MP	—
Square 1080	1080 x 1080	1:1	1.17 MP	—

Source: —

Closest target: —

Scale for that target: —

A scale factor of 0.5 means the target is half the width and half the height, which is a quarter of the pixels.

Common questions about the free online resolution scaler.

It divides the target width by the source width. A source of 3840 pixels scaled to 1920 gives a factor of 0.5, so the target is half as wide.

It is 2,073,600 pixels, which is 2.07 megapixels, and its aspect ratio is 16 to 9 once the ratio is reduced by the greatest common divisor.

No. Halving both the width and the height leaves a quarter of the original pixels, which is why 4K to 1080p is a four times reduction in pixel count.

They differ when the target aspect ratio does not match the source, such as scaling a 16 to 9 video to a square or vertical frame.

3840 by 2160 pixels is 8,294,400 pixels, which is 8.29 megapixels, exactly four times the 2.07 megapixels of 1080p footage.

Match the platform and the source. Exporting above the original resolution adds no detail, and it increases file size and encoding time.

Yes. Type any width and height in the source boxes and every scale factor in the table updates immediately for that size.

No. It is a calculator, so it only shows the numbers. Use a video converter or scaler tool to apply the scaling to an actual file.

Last updated: October 10, 2026