| 521 mg * | 0.001 g | = 0.521 g | 
| 1 mg | 
| Matavimo vienetas | Masė | 
|---|---|
| Mikrogramas | 521000.0 µg | 
| Miligramas | 521.0 mg | 
| Gramas | 0.521 g | 
| Uncija | 0.0183777342 oz | 
| Svaras | 0.0011486084 lbs | 
| Kilogramas | 0.000521 kg | 
| Akmuo | 8.20435e-05 st | 
| JAV Tona | 5.743e-07 ton | 
| Tona | 5.21e-07 t | 
| Imperial Tona | 5.128e-07 Long tons | 
