stdunits

Parse and convert between standard units of measurement.

API

Normalize anything to a common unit

var stdunits = require('stdunits');
stdunits.to('mm', '55in'); // 1397

Find all measurements in a string

stdunits.find('10m 55in', 'mm'); // [ 1000, 1397 ]

Pixels and Percents

Some things require context. For instance, the px unit is only bound to real world measurement (such as pt) through a PPI (pixels per inch). The web has a fixed PPI of 96 regardless of the device. Naturally, stdunits uses 96 as the default, but it can be overriden.

stdunits.to('px', '32pt', {
  ppi: 60
});

// returns 10px

percentages need a scale:

stdunits.to('px', '10%', {
  scale: '100px' // if a plain number the target unit is used
});

// returns 10px

License

MIT