Design & colour
tools and calculators.
26 practical tools with clear inputs and explanations. Choose a tool below, or explore a role-based toolbox for a collection that fits your day.
2D point transformation
Scale, rotate and translate a point set with a comparison plot and CSV export.
Bézier curve sampler
Turn control points into an exportable curve and inspect the control polygon.
Image colour palette extractor
Extract a sampled palette, inspect colour contrast and download reusable swatches.
Colour converter
Convert HEX, RGB and HSL colour values.
Colour contrast checker
Check text and background contrast against WCAG ratios.
Aspect ratio calculator
Simplify dimensions and resize proportionally.
Pixels & rem converter
Translate CSS pixels and rem using your chosen root size.
CSS gradient generator
Build a two-colour linear gradient and copy the CSS.
QR code generator
Create a downloadable QR code for a link or short text.
Favicon & ICO generator
Create an ICO and a complete downloadable favicon kit from text or an image.
Image DPI & print size
See the physical print dimensions available at a chosen resolution.
Print size to pixels
Calculate required pixels for physical artwork dimensions.
Print bleed calculator
Add equal bleed around a trim size and see the artwork dimensions.
Typography scale calculator
Build a modular type scale around a base font size.
Video file size estimator
Estimate a video’s size from duration and combined bitrate.
CSS absolute unit converter
Translate CSS pixels, points, inches and metric absolute units.
Exposure value calculator
Compare photographic settings on a logarithmic stop scale.
Equivalent shutter exposure
Keep a relative exposure while changing aperture and ISO.
ND filter exposure calculator
Translate filter stops into exposure time, factor and optical density.
Depth of field & hyperfocal
Explore thin-lens focus limits with a chosen blur criterion.
Camera field of view
Compare sensor dimensions, focal length and approximate scene coverage.
Macro extension estimate
Estimate magnification and exposure allowance from lens extension.
Flash guide number calculator
Relate ISO, direct-flash distance and aperture using a supplied guide number.
Light distance & falloff
Compare ideal point-source illumination at two distances.
Print job quantity & cost
Count printed pages and sheets, allowing for duplex copies.
Paper grid cutting layout
Compare portrait and rotated grid cuts with margins and gutters.