For unit conversion to metric, I made a browser plugin: https://github.com/falk-hueffner/metric-cooking https://github.com/falk-hueffner/metric-cooking It can a

For unit conversion to metric, I made a browser plugin: https://github.com/falk-hueffner/metric-cooking https://github.com/falk-hueffner/metric-cooking It can also convert from volume to mass, e.g. annotate "3/4 cup plus 2 tablespoons packed light-brown sugar" with "[190 g]". It's a bit hacky (basically a giant regexp) but works nicely for me.