| Unit | mp | 
| To Base Units | = 1.672621637E-27<kg> | 
| Quantity | Mass | 
| Dimension | M1L0T0I0O0N0J0$0D0 | 
| Unit System | Natural | 
| To Alternative Units | Conversion Factor | 
|---|---|
| ElectronMass | = 1836.15257752173 <me> | 
| Dalton | = 1.00727641759593 <Da> | 
| UnifiedAtomicMass | = 1.00727641759593 <u> | 
| ProtonMass | = 1 <mp> | 
| Grain | = 2.58124964910675E-23 <gr> | 
| Drachm | = 9.43999871673326E-25 <drachm> | 
| Ounce | = 5.89999919795829E-26 <oz> | 
| Pound | = 3.68749949872393E-27 <lbm> | 
| Gram | = 1.672621637E-27 <g> | 
| Stone | = 2.63392821337424E-28 <st> | 
| Hyl | = 1.70559940142658E-28 <hyl> | 
| Quarter | = 1.31696410668712E-28 <quarter> | 
| Slug | = 1.14610983035208E-28 <slug> | 
| Hundredweight | = 3.2924102667178E-29 <cwt> | 
| MetricTonne | = 1.672621637E-30 <mt> | 
| Tonne | = 1.6462051333589E-30 <t> | 
| SolarMass | = 8.40969791142932E-58 <Mo> |