Answer: Femtomolar is a molar concentration measurement unit. It is a SI-derived multiple of unit molar often expressed as 10-15 molar.
Symbol : fM
So as we know 1 femtomolar = 10-15 molar.
Example Conversion: 841 femtomolar = 1.00E-15 x 841 molars.
Or we can say, 841 fM = 8.41E-13 M.
use this conversion chart and table to compare one femtomolar with other molar concentration units.
| 1000 attomolar | 1.0E-13 centimolar |
| 1.0E-16 decamolar | 1.0E-14 decimolar |
| 1.0E-33 examolar | 1 femtomolar |
| 1.0E-24 gigamolar | 1.0E-17 hectomolar |
| 1.0E-15 molar | 1.0E-18 kilomolar |
| 1.0E-21 megamolar | 1.0E-9 micromolar |
| 1.0E-12 millimolar | 1.0E-6 nanomolar |
| 1.0E-30 petamolar | 0.001 picomolar |
| 1.0E-27 teramolar | 1000000000 yoctomolar |
| 1.0E-39 yottamolar | 1000000 zeptomolar |
| 1.0E-36 zettamolar |