Yoctohenry is 1e-24 henry units.
Yoctohenrys to Attohenrys Converter — yH to aH
Convert Yoctohenry (yH) to Attohenry (aH) using the exact conversion factor (1 yoctohenry = 0.000001 attohenry). See the formula, worked examples, and conversion table.
Yoctohenrys to Attohenrys converter
Converter
Electricity Converter
Convert electrical units by family and calculate voltage, current, resistance, power, and energy with context values.
Context values
Some unit families need one extra value for a physically accurate result.
Attohenry is 1e-18 henry units.
Result = input x 1e-24 / 1e-18.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Yoctohenrys to Attohenrys
Yoctohenry and Attohenry both belong to the electricity family — voltage, current, resistance, power, or energy — units that show up constantly when working across the different standards used by household wiring (120V/240V depending on region), automotive electrical systems (12V/24V), and electronics design. Specifically: Yoctohenry is 1e-24 henry units, and attohenry is 1e-18 henry units.
Formula
attohenrys = yoctohenrys × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 yoctohenry equals 1e-24 base units, and 1 attohenry equals 1e-18 base units, so dividing one by the other gives the direct yoctohenry-to-attohenry factor of 0.000001.
Simple example
1 yH × 0.000001 = 0.000001 aH
1 yoctohenry = 0.000001 attohenrys.
Real-world example
120 yH × 0.000001 = 0.00012 aH
120 yoctohenrys = 0.00012 attohenrys.
Conversion table
| Yoctohenry (yH) | Attohenry (aH) |
|---|---|
| 1 yH | 0.000001 aH |
| 5 yH | 0.000005 aH |
| 12 yH | 0.000012 aH |
| 24 yH | 0.000024 aH |
| 120 yH | 0.00012 aH |
| 240 yH | 0.00024 aH |
Reverse conversion: Attohenry to Yoctohenry
0.000001 aH × 1000000 = 1 yH
0.000001 attohenrys = 1 yoctohenrys.
yoctohenrys = attohenrys × 1000000
For a page dedicated to this direction, see Attohenry to Yoctohenry.
Understanding the Yoctohenry (yH)
Yoctohenry is 1e-24 henry units.
Understanding the Attohenry (aH)
Attohenry is 1e-18 henry units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attohenrys are in 1 yoctohenry?
1 yoctohenry equals 0.000001 attohenrys, using the exact defined conversion factor rather than an estimate.
How do I convert yoctohenry to attohenry?
Multiply the yoctohenry value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert attohenry back to yoctohenry?
Use the reverse factor: 1 attohenry equals 1,000,000 yoctohenrys. You can also use the swap control in the converter above to flip the direction instantly.
What is a yoctohenry?
Yoctohenry (yH) is a unit of electricity.
What is a attohenry?
Attohenry (aH) is a unit of electricity.
Is the yoctohenry to attohenry conversion exact?
Yes. Both yoctohenry and attohenry are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 used above is exact to as many digits as you choose to display.
What's the difference between voltage, current, and resistance?
Voltage (volts) is the electrical potential difference driving current through a circuit. Current (amperes) is the rate of flow of electric charge. Resistance (ohms) is how much a component opposes that flow. They're related by Ohm's law (V = I × R), but they are distinct physical quantities, and this page converts between units of just one of them.