Femtomole is 1e-15 mole units.
Femtomoles to Attomoles Converter — fmol to amol
Convert Femtomole (fmol) to Attomole (amol) using the exact conversion factor (1 femtomole = 1,000 attomole). See the formula, worked examples, and conversion table.
Femtomoles to Attomoles 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.
Attomole is 1e-18 mole units.
Result = input x 1e-15 / 1e-18.
Amount units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Femtomoles to Attomoles
Femtomole and Attomole 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 attomole is 1e-18 mole units.
Formula
attomoles = femtomoles × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 femtomole equals 1e-15 base units, and 1 attomole equals 1e-18 base units, so dividing one by the other gives the direct femtomole-to-attomole factor of 1000.
Simple example
1 fmol × 1000 = 1,000 amol
1 femtomole = 1,000 attomoles.
Real-world example
100 fmol × 1000 = 100,000 amol
100 femtomoles = 100,000 attomoles.
Conversion table
| Femtomole (fmol) | Attomole (amol) |
|---|---|
| 0.001 fmol | 1 amol |
| 0.01 fmol | 10 amol |
| 0.1 fmol | 100 amol |
| 1 fmol | 1,000 amol |
| 10 fmol | 10,000 amol |
| 100 fmol | 100,000 amol |
Reverse conversion: Attomole to Femtomole
1 amol × 0.001 = 0.001 fmol
1 attomole = 0.001 femtomoles.
femtomoles = attomoles × 0.001
For a page dedicated to this direction, see Attomole to Femtomole.
Understanding the Femtomole (fmol)
Femtomole is 1e-15 mole units.
Understanding the Attomole (amol)
Attomole is 1e-18 mole units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attomoles are in 1 femtomole?
1 femtomole equals 1,000 attomoles, using the exact defined conversion factor rather than an estimate.
How do I convert femtomole to attomole?
Multiply the femtomole value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert attomole back to femtomole?
Use the reverse factor: 1 attomole equals 0.001 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 attomole?
Attomole (amol) is a unit of chemistry.
Is the femtomole to attomole conversion exact?
Yes. Both femtomole and attomole 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.
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.