Kilomole is 1000 mole units.
Kilomoles to Attomoles Converter — kmol to amol
Convert Kilomole (kmol) to Attomole (amol) using the exact conversion factor (1 kilomole = 1e+21 attomole). See the formula, worked examples, and conversion table.
Kilomoles 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 1000 / 1e-18.
Amount units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Kilomoles to Attomoles
Kilomole 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: Kilomole is 1000 mole units, and attomole is 1e-18 mole units.
Formula
attomoles = kilomoles × 1e+21
This factor comes from each unit's defined relationship to the category's base unit: 1 kilomole equals 1000 base units, and 1 attomole equals 1e-18 base units, so dividing one by the other gives the direct kilomole-to-attomole factor of 1e+21.
Simple example
1 kmol × 1e+21 = 1e+21 amol
1 kilomole = 1e+21 attomoles.
Real-world example
100 kmol × 1e+21 = 1e+23 amol
100 kilomoles = 1e+23 attomoles.
Conversion table
| Kilomole (kmol) | Attomole (amol) |
|---|---|
| 0.001 kmol | 1e+18 amol |
| 0.01 kmol | 1e+19 amol |
| 0.1 kmol | 1e+20 amol |
| 1 kmol | 1e+21 amol |
| 10 kmol | 1e+22 amol |
| 100 kmol | 1e+23 amol |
Reverse conversion: Attomole to Kilomole
1e+21 amol × 1e-21 = 1 kmol
1e+21 attomoles = 1 kilomoles.
kilomoles = attomoles × 1e-21
For a page dedicated to this direction, see Attomole to Kilomole.
Understanding the Kilomole (kmol)
Kilomole is 1000 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 kilomole?
1 kilomole equals 1e+21 attomoles, using the exact defined conversion factor rather than an estimate.
How do I convert kilomole to attomole?
Multiply the kilomole value by 1e+21. The converter above does this instantly to whatever precision you set.
How do I convert attomole back to kilomole?
Use the reverse factor: 1 attomole equals 1e-21 kilomoles. You can also use the swap control in the converter above to flip the direction instantly.
What is a kilomole?
Kilomole (kmol) is a unit of chemistry.
What is a attomole?
Attomole (amol) is a unit of chemistry.
Is the kilomole to attomole conversion exact?
Yes. Both kilomole and attomole are defined by fixed standards rather than physical artifacts, so the factor of 1e+21 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.