Convertitore di unità di misura

Questa funzione è un converitore di unità di misura. Le unità di misura supportate sono: 
mm, cm, m, km, in, yd, ft-us, ft, mi, mm2, cm2, m2, ha, km2, in2, yd2, ft2, ac, mi2, mcg, mg, g, kg, mt, oz, lb, t, mm3, cm3, ml, cl, dl, l, kl, m3, km3, krm, tsk, msk, kkp, glas, kanna, tsp, Tbs, in3, fl-oz, cup, pnt, qt, gal, ft3, yd3, ea, dz, C, K, F, R, ns, mu, ms, s, min, h, d, week, month, year, b, Kb, Mb, Gb, Tb, B, KB, MB, GB, TB, ppm, ppb, ppt, ppq, m/s, km/h, m/h, knot, ft/s, min/km, s/m, min/mi, s/ft, Pa, kPa, MPa, hPa, bar, torr, psi, ksi, A, mA, kA, V, mV, kV, W, mW, kW, MW, GW, VAR, mVAR, kVAR, MVAR, GVAR, VA, mVA, kVA, MVA, GVA, Wh, mWh, kWh, MWh, GWh, J, kJ, VARh, mVARh, kVARh, MVARh, GVARh, mm3/s, cm3/s, ml/s, cl/s, dl/s, l/s, l/min, l/h, kl/s, kl/min, kl/h, m3/s, m3/min, m3/h, km3/s, tsp/s, Tbs/s, in3/s, in3/min, in3/h, fl-oz/s, fl-oz/min, fl-oz/h, cup/s, pnt/s, pnt/min, pnt/h, qt/s, gal/s, gal/min, gal/h, ft3/s, ft3/min, ft3/h, yd3/s, yd3/min, yd3/h, lx, ft-cd, mHz, Hz, kHz, MHz, GHz, THz, rpm, deg/s, rad/s, rad, deg, grad, arcmin, arcsec.