Unit and time converters
Convert measurements and Unix timestamps, or calculate print dimensions, resolution, ratios, and bleed.
Choose the right tool
Choose a unit converter for measurements, a timestamp converter for dates, or a print calculator for image-to-paper planning. Specify units and time zones explicitly before comparing results.
Print size
Convert image pixels and a chosen PPI into print dimensions in inches, centimeters, or millimeters without changing the image.
CalculateEffective PPI
Check image pixel density at a specific print size. Compare crop and fit PPI, review each axis, and spot a mismatch before printing.
CalculateAspect ratio
Find an image’s width-to-height ratio and calculate proportional dimensions for a new width or height without stretching the image.
CalculateBleed
Calculate artwork dimensions with an equal bleed on every edge, preview a chosen safe inset, and estimate pixels at your selected PPI.
CalculateUnit converter
Convert length, area, volume, mass, temperature, speed, and data units locally.
ConvertersTimestamp converter
Convert Unix seconds or milliseconds to dates, and ISO dates back to timestamps.
Converters