Electrical capacitance is the ability of a system to store electric charge. It is measured in farads (F).
1 A·s/V = 999,999,999,999,999.9 fF 
1 fF = 1.0000e-15 A·s/V 
उदाहरण: 
कन्वर्ट 15 Ampere Second per Volt से Femtofarad:
15 A·s/V = 14,999,999,999,999,998 fF 
| Ampere Second per Volt | Femtofarad | 
|---|---|
| 0.01 A·s/V | 9,999,999,999,999.998 fF | 
| 0.1 A·s/V | 100,000,000,000,000 fF | 
| 1 A·s/V | 999,999,999,999,999.9 fF | 
| 2 A·s/V | 1,999,999,999,999,999.8 fF | 
| 3 A·s/V | 2,999,999,999,999,999.5 fF | 
| 5 A·s/V | 4,999,999,999,999,999 fF | 
| 10 A·s/V | 9,999,999,999,999,998 fF | 
| 20 A·s/V | 19,999,999,999,999,996 fF | 
| 30 A·s/V | 29,999,999,999,999,996 fF | 
| 40 A·s/V | 39,999,999,999,999,990 fF | 
| 50 A·s/V | 49,999,999,999,999,990 fF | 
| 60 A·s/V | 59,999,999,999,999,990 fF | 
| 70 A·s/V | 69,999,999,999,999,990 fF | 
| 80 A·s/V | 79,999,999,999,999,980 fF | 
| 90 A·s/V | 89,999,999,999,999,980 fF | 
| 100 A·s/V | 99,999,999,999,999,980 fF | 
| 250 A·s/V | 249,999,999,999,999,970 fF | 
| 500 A·s/V | 499,999,999,999,999,940 fF | 
| 750 A·s/V | 749,999,999,999,999,900 fF | 
| 1000 A·s/V | 999,999,999,999,999,900 fF | 
| 10000 A·s/V | 9,999,999,999,999,998,000 fF | 
| 100000 A·s/V | 99,999,999,999,999,980,000 fF |