Attoliter is 1e-18 liter units.
Attoliters to Zeptoliters Converter — aL to zL
Convert Attoliter (aL) to Zeptoliter (zL) using the exact conversion factor (1 attoliter = 1,000 zeptoliter). See the formula, worked examples, and conversion table.
Attoliters to Zeptoliters converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
Zeptoliter is 1e-21 liter units.
Result = input x 1e-21 / 1e-24.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Attoliters to Zeptoliters
Attoliter and Zeptoliter appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Specifically: Attoliter is 1e-18 liter units, and zeptoliter is 1e-21 liter units.
Formula
zeptoliters = attoliters × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 attoliter equals 1e-21 base units, and 1 zeptoliter equals 1e-24 base units, so dividing one by the other gives the direct attoliter-to-zeptoliter factor of 1000.
Simple example
1 aL × 1000 = 1,000 zL
1 attoliter = 1,000 zeptoliters.
Real-world example
10 aL × 1000 = 10,000 zL
10 attoliters = 10,000 zeptoliters.
Conversion table
| Attoliter (aL) | Zeptoliter (zL) |
|---|---|
| 1 aL | 1,000 zL |
| 5 aL | 5,000 zL |
| 10 aL | 10,000 zL |
| 25 aL | 25,000 zL |
| 50 aL | 50,000 zL |
| 100 aL | 100,000 zL |
Reverse conversion: Zeptoliter to Attoliter
1 zL × 0.001 = 0.001 aL
1 zeptoliter = 0.001 attoliters.
attoliters = zeptoliters × 0.001
For a page dedicated to this direction, see Zeptoliter to Attoliter.
Understanding the Attoliter (aL)
Attoliter is 1e-18 liter units.
Understanding the Zeptoliter (zL)
Zeptoliter is 1e-21 liter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many zeptoliters are in 1 attoliter?
1 attoliter equals 1,000 zeptoliters, using the exact defined conversion factor rather than an estimate.
How do I convert attoliter to zeptoliter?
Multiply the attoliter value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert zeptoliter back to attoliter?
Use the reverse factor: 1 zeptoliter equals 0.001 attoliters. You can also use the swap control in the converter above to flip the direction instantly.
What is a attoliter?
Attoliter (aL) is a unit of volume.
What is a zeptoliter?
Zeptoliter (zL) is a unit of volume.
Is the attoliter to zeptoliter conversion exact?
Yes. Both attoliter and zeptoliter are defined by fixed standards rather than physical artifacts, so the factor of 1000 used above is exact to as many digits as you choose to display.