Femtomole is 1e-15 mole units.
Femtomoles to Ronnamoles Converter — fmol to Rmol
Convert Femtomole (fmol) to Ronnamole (Rmol) using the exact conversion factor (1 femtomole = 1e-42 ronnamole). See the formula, worked examples, and conversion table.
Femtomoles to Ronnamoles converter
Converter
Chemistry Converter
Convert concentration, molarity, amount, and laboratory scientific units by compatible family.
Context values
Some unit families need one extra value for a physically accurate result.
Ronnamole is 1e+27 mole units.
Result = input x 1e-15 / 1e+27.
Amount units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Femtomoles to Ronnamoles
Femtomole and Ronnamole both measure mass concentration — how much of a substance is dissolved or dispersed in a given volume — a core calculation for preparing lab solutions, checking water quality against a regulatory limit, or formulating a pharmaceutical dose. Specifically: Femtomole is 1e-15 mole units, and ronnamole is 1e+27 mole units.
Formula
ronnamoles = femtomoles × 1e-42
This factor comes from each unit's defined relationship to the category's base unit: 1 femtomole equals 1e-15 base units, and 1 ronnamole equals 1e+27 base units, so dividing one by the other gives the direct femtomole-to-ronnamole factor of 1e-42.
Simple example
1 fmol × 1e-42 = 1e-42 Rmol
1 femtomole = 1e-42 ronnamoles.
Real-world example
100 fmol × 1e-42 = 1e-40 Rmol
100 femtomoles = 1e-40 ronnamoles.
Conversion table
| Femtomole (fmol) | Ronnamole (Rmol) |
|---|---|
| 0.001 fmol | 1e-45 Rmol |
| 0.01 fmol | 1e-44 Rmol |
| 0.1 fmol | 1e-43 Rmol |
| 1 fmol | 1e-42 Rmol |
| 10 fmol | 1e-41 Rmol |
| 100 fmol | 1e-40 Rmol |
Reverse conversion: Ronnamole to Femtomole
1e-42 Rmol × 1e+42 = 1 fmol
1e-42 ronnamoles = 1 femtomole.
femtomoles = ronnamoles × 1e+42
For a page dedicated to this direction, see Ronnamole to Femtomole.
Understanding the Femtomole (fmol)
Femtomole is 1e-15 mole units.
Understanding the Ronnamole (Rmol)
Ronnamole is 1e+27 mole units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ronnamoles are in 1 femtomole?
1 femtomole equals 1e-42 ronnamoles, using the exact defined conversion factor rather than an estimate.
How do I convert femtomole to ronnamole?
Multiply the femtomole value by 1e-42. The converter above does this instantly to whatever precision you set.
How do I convert ronnamole back to femtomole?
Use the reverse factor: 1 ronnamole equals 1e+42 femtomoles. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtomole?
Femtomole (fmol) is a unit of chemistry.
What is a ronnamole?
Ronnamole (Rmol) is a unit of chemistry.
Is the femtomole to ronnamole conversion exact?
Yes. Both femtomole and ronnamole are defined by fixed standards rather than physical artifacts, so the factor of 1e-42 used above is exact to as many digits as you choose to display.
What's the difference between mass concentration and molarity?
Mass concentration expresses how much mass of a substance is present per unit volume (for example, grams per liter). Molarity expresses the amount in moles per liter instead, which accounts for the substance's molecular weight. This category converts mass-concentration units.