Micromole is 0.000001 mole units.
Micromoles to Attomoles Converter — umol to amol
Convert Micromole (umol) to Attomole (amol) using the exact conversion factor (1 micromole = 1,000,000,000,000 attomole). See the formula, worked examples, and conversion table.
Micromoles 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-6 / 1e-18.
Amount units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Micromoles to Attomoles
Micromole 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: Micromole is 0.000001 mole units, and attomole is 1e-18 mole units.
Formula
attomoles = micromoles × 1000000000000
This factor comes from each unit's defined relationship to the category's base unit: 1 micromole equals 0.000001 base units, and 1 attomole equals 1e-18 base units, so dividing one by the other gives the direct micromole-to-attomole factor of 1000000000000.
Simple example
1 umol × 1000000000000 = 1,000,000,000,000 amol
1 micromole = 1,000,000,000,000 attomoles.
Real-world example
100 umol × 1000000000000 = 1e+14 amol
100 micromoles = 1e+14 attomoles.
Conversion table
| Micromole (umol) | Attomole (amol) |
|---|---|
| 0.001 umol | 1,000,000,000 amol |
| 0.01 umol | 10,000,000,000 amol |
| 0.1 umol | 100,000,000,000 amol |
| 1 umol | 1,000,000,000,000 amol |
| 10 umol | 1e+13 amol |
| 100 umol | 1e+14 amol |
Reverse conversion: Attomole to Micromole
1 amol × 1e-12 = 1e-12 umol
1 attomole = 1e-12 micromoles.
micromoles = attomoles × 1e-12
For a page dedicated to this direction, see Attomole to Micromole.
Understanding the Micromole (umol)
Micromole is 0.000001 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 micromole?
1 micromole equals 1,000,000,000,000 attomoles, using the exact defined conversion factor rather than an estimate.
How do I convert micromole to attomole?
Multiply the micromole value by 1000000000000. The converter above does this instantly to whatever precision you set.
How do I convert attomole back to micromole?
Use the reverse factor: 1 attomole equals 1e-12 micromoles. You can also use the swap control in the converter above to flip the direction instantly.
What is a micromole?
Micromole (umol) is a unit of chemistry.
What is a attomole?
Attomole (amol) is a unit of chemistry.
Is the micromole to attomole conversion exact?
Yes. Both micromole and attomole are defined by fixed standards rather than physical artifacts, so the factor of 1000000000000 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.