Rontoliter is 1e-27 liter units.
Rontoliters to Femtoliters Converter — rL to fL
Convert Rontoliter (rL) to Femtoliter (fL) using the exact conversion factor (1 rontoliter = 1e-12 femtoliter). See the formula, worked examples, and conversion table.
Rontoliters to Femtoliters 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.
Femtoliter is 1e-15 liter units.
Result = input x 1e-30 / 1e-18.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Rontoliters to Femtoliters
Rontoliter and Femtoliter 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: Rontoliter is 1e-27 liter units, and femtoliter is 1e-15 liter units.
Formula
femtoliters = rontoliters × 1e-12
This factor comes from each unit's defined relationship to the category's base unit: 1 rontoliter equals 1e-30 base units, and 1 femtoliter equals 1e-18 base units, so dividing one by the other gives the direct rontoliter-to-femtoliter factor of 1e-12.
Simple example
1 rL × 1e-12 = 1e-12 fL
1 rontoliter = 1e-12 femtoliters.
Real-world example
10 rL × 1e-12 = 1e-11 fL
10 rontoliters = 1e-11 femtoliters.
Conversion table
| Rontoliter (rL) | Femtoliter (fL) |
|---|---|
| 1 rL | 1e-12 fL |
| 5 rL | 5e-12 fL |
| 10 rL | 1e-11 fL |
| 25 rL | 2.5e-11 fL |
| 50 rL | 5e-11 fL |
| 100 rL | 1e-10 fL |
Reverse conversion: Femtoliter to Rontoliter
1e-12 fL × 1e+12 = 1 rL
1e-12 femtoliters = 1 rontoliter.
rontoliters = femtoliters × 1e+12
For a page dedicated to this direction, see Femtoliter to Rontoliter.
Understanding the Rontoliter (rL)
Rontoliter is 1e-27 liter units.
Understanding the Femtoliter (fL)
Femtoliter is 1e-15 liter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many femtoliters are in 1 rontoliter?
1 rontoliter equals 1e-12 femtoliters, using the exact defined conversion factor rather than an estimate.
How do I convert rontoliter to femtoliter?
Multiply the rontoliter value by 1e-12. The converter above does this instantly to whatever precision you set.
How do I convert femtoliter back to rontoliter?
Use the reverse factor: 1 femtoliter equals 1e+12 rontoliters. You can also use the swap control in the converter above to flip the direction instantly.
What is a rontoliter?
Rontoliter (rL) is a unit of volume.
What is a femtoliter?
Femtoliter (fL) is a unit of volume.
Is the rontoliter to femtoliter conversion exact?
Yes. Both rontoliter and femtoliter are defined by fixed standards rather than physical artifacts, so the factor of 1e-12 used above is exact to as many digits as you choose to display.