Calculate the near and far depth-of-field limits for a given aperture and focus distance.

Scale dimensions proportionally while maintaining aspect ratio.

Calculate quarter, eighth, and dotted-eighth delay times in milliseconds for a given BPM.

Calculate the pitch adjustment percentage needed to match two tracks of different BPM.

Calculate centering and offset for pulls and knobs.

Estimate camera noise increase as ISO rises above the base ISO.

Calculate pixel dimensions needed to print a canvas at a target DPI.

Calculate letterbox bar height for displaying a cinematic aspect ratio on a screen.

Calculate clay shrinkage percentage between wet and fired pottery dimensions.

Convert CMYK percentages to RGB color values.

Calculate the blended RGB color from opacity and background.

Find the complementary HSL hue 180 degrees opposite a given hue.

Calculate the floor space swept by a swinging door.

Calculate heading sizes using a geometric scale (golden ratio) from a base font size.

Generate a modular type scale for consistent typography.

Convert a font size from em units to pixels for a given parent size.

Split a UI width into main content and sidebar using the golden ratio.

Compute φ, Fibonacci ratios, and compare against the rule of thirds.

Calculate CSS grid column widths from container and gap.

Convert a hex color value to RGB components.

Convert HSL color values to RGB components.

Calculate a new HSL hue after rotating by a degree amount.

Calculate new dimensions when resizing an image.

Calculate character kerning spacing in pixels from font size and multiplier.