Zeptovolt is 1e-21 volt units.
Zeptovolts to Attovolts Converter — zV to aV
Convert Zeptovolt (zV) to Attovolt (aV) using the exact conversion factor (1 zeptovolt = 0.001 attovolt). See the formula, worked examples, and conversion table.
Zeptovolts to Attovolts 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.
Attovolt is 1e-18 volt units.
Result = input x 1e-21 / 1e-18.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Zeptovolts to Attovolts
Zeptovolt and Attovolt 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: Zeptovolt is 1e-21 volt units, and attovolt is 1e-18 volt units.
Formula
attovolts = zeptovolts × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 zeptovolt equals 1e-21 base units, and 1 attovolt equals 1e-18 base units, so dividing one by the other gives the direct zeptovolt-to-attovolt factor of 0.001.
Simple example
1 zV × 0.001 = 0.001 aV
1 zeptovolt = 0.001 attovolts.
Real-world example
120 zV × 0.001 = 0.12 aV
120 zeptovolts = 0.12 attovolts.
Conversion table
| Zeptovolt (zV) | Attovolt (aV) |
|---|---|
| 1 zV | 0.001 aV |
| 5 zV | 0.005 aV |
| 12 zV | 0.012 aV |
| 24 zV | 0.024 aV |
| 120 zV | 0.12 aV |
| 240 zV | 0.24 aV |
Reverse conversion: Attovolt to Zeptovolt
0.001 aV × 1000 = 1 zV
0.001 attovolts = 1 zeptovolts.
zeptovolts = attovolts × 1000
For a page dedicated to this direction, see Attovolt to Zeptovolt.
Understanding the Zeptovolt (zV)
Zeptovolt is 1e-21 volt units.
Understanding the Attovolt (aV)
Attovolt is 1e-18 volt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attovolts are in 1 zeptovolt?
1 zeptovolt equals 0.001 attovolts, using the exact defined conversion factor rather than an estimate.
How do I convert zeptovolt to attovolt?
Multiply the zeptovolt value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert attovolt back to zeptovolt?
Use the reverse factor: 1 attovolt equals 1,000 zeptovolts. You can also use the swap control in the converter above to flip the direction instantly.
What is a zeptovolt?
Zeptovolt (zV) is a unit of electricity.
What is a attovolt?
Attovolt (aV) is a unit of electricity.
Is the zeptovolt to attovolt conversion exact?
Yes. Both zeptovolt and attovolt are defined by fixed standards rather than physical artifacts, so the factor of 0.001 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.