Needs more metric units

Pretty good. Needs more metric units for speed. km/h, m/s, km/s are missing. Lots of other units missing too. Slug, all angular units e.g. rpm, cps, period, missing all units of acceleration, m/s/s, etc. Good idea but with a little work could be improved a lot. To really make up for a normal calculator it needs to have exhaustive comprehension of units, equivalent to the might of google or wolfram alpha.

thektw about Soulver 2