Answer: It is non-SI multiple of the inductance unit henry.
Answer: It is 1.00E+24 times henry.
Symbol : YH
So 1 yottahenry = 1.00E+24 henry.
Example : 21 yottahenry = 1.00E+24 x 21 henries.
Or we can say, 21YH = 2.1E+25 H.
Using this conversion chart compare one yottahenry with other inductance units.
| 1.0E+42 attohenry | 1.0E+26 centihenry |
| 1.0E+23 decahenry | 1.0E+25 decihenry |
| 1000000 exahenry | 1.0E+39 femtohenry |
| 1.0E+15 gigahenry | 1.0E+22 hectohenry |
| 1.0E+24 henry | 1.0E+21 kilohenry |
| 1.0E+18 megahenry | 1.0E+30 microhenry |
| 1.0E+27 millihenry | 1.0E+33 nanohenry |
| 1000000000 petahenry | 1.0E+36 picohenry |
| 1000000000000 terahenry | 1.0E+48 yoctohenry |
| 1 yottahenry | 1.0E+45 zeptohenry |
| 1000 zettahenry |