Zeptoliter is 1e-21 liter units.
Zeptoliters to Yoctoliters Converter — zL to yL
Convert Zeptoliter (zL) to Yoctoliter (yL) using the exact conversion factor (1 zeptoliter = 1,000 yoctoliter). See the formula, worked examples, and conversion table.
Zeptoliters to Yoctoliters 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.
Yoctoliter is 1e-24 liter units.
Result = input x 1e-24 / 1e-27.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Zeptoliters to Yoctoliters
Zeptoliter and Yoctoliter 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: Zeptoliter is 1e-21 liter units, and yoctoliter is 1e-24 liter units.
Formula
yoctoliters = zeptoliters × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 zeptoliter equals 1e-24 base units, and 1 yoctoliter equals 1e-27 base units, so dividing one by the other gives the direct zeptoliter-to-yoctoliter factor of 1000.
Simple example
1 zL × 1000 = 1,000 yL
1 zeptoliter = 1,000 yoctoliters.
Real-world example
10 zL × 1000 = 10,000 yL
10 zeptoliters = 10,000 yoctoliters.
Conversion table
| Zeptoliter (zL) | Yoctoliter (yL) |
|---|---|
| 1 zL | 1,000 yL |
| 5 zL | 5,000 yL |
| 10 zL | 10,000 yL |
| 25 zL | 25,000 yL |
| 50 zL | 50,000 yL |
| 100 zL | 100,000 yL |
Reverse conversion: Yoctoliter to Zeptoliter
1 yL × 0.001 = 0.001 zL
1 yoctoliter = 0.001 zeptoliters.
zeptoliters = yoctoliters × 0.001
For a page dedicated to this direction, see Yoctoliter to Zeptoliter.
Understanding the Zeptoliter (zL)
Zeptoliter is 1e-21 liter units.
Understanding the Yoctoliter (yL)
Yoctoliter is 1e-24 liter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many yoctoliters are in 1 zeptoliter?
1 zeptoliter equals 1,000 yoctoliters, using the exact defined conversion factor rather than an estimate.
How do I convert zeptoliter to yoctoliter?
Multiply the zeptoliter value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert yoctoliter back to zeptoliter?
Use the reverse factor: 1 yoctoliter equals 0.001 zeptoliters. You can also use the swap control in the converter above to flip the direction instantly.
What is a zeptoliter?
Zeptoliter (zL) is a unit of volume.
What is a yoctoliter?
Yoctoliter (yL) is a unit of volume.
Is the zeptoliter to yoctoliter conversion exact?
Yes. Both zeptoliter and yoctoliter 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.