✳ FREE CALCULATOR
Resolution scale calculator
Scale a resolution by a percentage or to a target width, keeping the aspect ratio and rounding to encoder-safe even dimensions.
- Scaled resolution
- 1920 × 1080
- Exact (unrounded)
- 1920.0 × 1080.0
- Pixel count change
- 25.0% of the original
- Rough bitrate implication
- about 25% of the original bitrate for similar quality
Rounded to even numbers for H.264 compatibility.
A rule of thumb only - codec efficiency does not scale perfectly linearly with pixel count.
Calculated as: scaled = source × percent ÷ 100, rounded to the nearest even number
What this assumes
- Upscaling past 100% adds pixels but no detail.
- The bitrate figure is a planning heuristic, not a measured encode.
Koldflux works these numbers out for you when it exports - the calculators exist because our own pipeline needed them first.
Automate this in Koldflux