Femtoliter is 1e-15 liter units.
Femtoliters to Zeptoliters Converter — fL to zL
Convert Femtoliter (fL) to Zeptoliter (zL) using the exact conversion factor (1 femtoliter = 1,000,000 zeptoliter). See the formula, worked examples, and conversion table.
Femtoliters 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-18 / 1e-24.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Femtoliters to Zeptoliters
Femtoliter 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: Femtoliter is 1e-15 liter units, and zeptoliter is 1e-21 liter units.
Formula
zeptoliters = femtoliters × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 femtoliter equals 1e-18 base units, and 1 zeptoliter equals 1e-24 base units, so dividing one by the other gives the direct femtoliter-to-zeptoliter factor of 1000000.
Simple example
1 fL × 1000000 = 1,000,000 zL
1 femtoliter = 1,000,000 zeptoliters.
Real-world example
10 fL × 1000000 = 10,000,000 zL
10 femtoliters = 10,000,000 zeptoliters.
Conversion table
| Femtoliter (fL) | Zeptoliter (zL) |
|---|---|
| 1 fL | 1,000,000 zL |
| 5 fL | 5,000,000 zL |
| 10 fL | 10,000,000 zL |
| 25 fL | 25,000,000 zL |
| 50 fL | 50,000,000 zL |
| 100 fL | 100,000,000 zL |
Reverse conversion: Zeptoliter to Femtoliter
1 zL × 0.000001 = 0.000001 fL
1 zeptoliter = 0.000001 femtoliters.
femtoliters = zeptoliters × 0.000001
For a page dedicated to this direction, see Zeptoliter to Femtoliter.
Understanding the Femtoliter (fL)
Femtoliter is 1e-15 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 femtoliter?
1 femtoliter equals 1,000,000 zeptoliters, using the exact defined conversion factor rather than an estimate.
How do I convert femtoliter to zeptoliter?
Multiply the femtoliter value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert zeptoliter back to femtoliter?
Use the reverse factor: 1 zeptoliter equals 0.000001 femtoliters. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtoliter?
Femtoliter (fL) is a unit of volume.
What is a zeptoliter?
Zeptoliter (zL) is a unit of volume.
Is the femtoliter to zeptoliter conversion exact?
Yes. Both femtoliter and zeptoliter are defined by fixed standards rather than physical artifacts, so the factor of 1000000 used above is exact to as many digits as you choose to display.