Plan video and image dimensions with proportional scaling, pixel counts, and transparent rounding.
Choose the right calculator
Start with the source frame dimensions and preserve the ratio when resizing without cropping. Delivery specifications may also require codec, bitrate, frame-rate, color, and file-size decisions.
How these calculators are checked
Each tool shows its formula, assumptions, worked example, and limitations. We test default values, decimals, zero and invalid inputs, unit conversions, and rounding behavior. Learn more on How Our Calculators Work.
Important: Dimension calculators do not predict visual quality, compression artifacts, upload limits, or playback compatibility.
This category and its linked calculators were reviewed by the DIY Cost Tools editorial team on September 28, 2026. Additional tools will be added without changing the category URL.