UniCon is simple but powerful unit converter.
362 units are classified under 23 categories.
1st, Select "Weight and measures" category.
2nd, Select unit to convert.
Last, Input value to convert.
That's all.
=== Weight and measures ===
"Acceleration","Angle","Area","Concentration","Dynamic viscosity","Electrical conductivity","Energy","Flow","Force","Kinematic viscosity","Length","Mass","Power","Pressure","Spread rate (by mass)","Spread rate (by volume)","Temperature","Time","Torque","Velocity","Volume","Volumetric density"
