Convert Hectomole to Attomole (hmol to amol)

Hectomole (hmol) and Attomole (amol) are both units of amount of substance. With the conversion form below, you can effortlessly and accurately convert hectomole to attomole. This free online calculator tool makes it simple and easy to perform the conversion from hmol unit to the amol unit.

Amount of substance is an SI base quantity that counts the number of specified elementary entities—atoms, molecules, ions, electrons, or other particles—in a sample. Its unit is the mole (mol). One mole contains exactly 6.02214076 × 10²³ entities (Avogadro's number), defined exactly since the 2019 SI revision. The mole is the bridge between the atomic scale and the laboratory scale, making it indispensable in chemistry and biochemistry.

The hectomole (symbol: hmol) is an SI-derived unit of amount of substance equal to 100 moles. It uses the SI prefix hecto-, which denotes a factor of one hundred (10²). Although less common than the mole or kilomole, the hectomole offers a convenient way to express intermediate quantities in scientific and industrial applications. Learn more about amount of substance.

One hectomole equals 100 moles, 10 decamoles, 0.1 kilomole, and 0.0001 megamole. It is mainly encountered in scientific calculations, educational materials, and specialized engineering applications.

An attomole (amol) is an SI-prefixed unit of amount of substance equal to 10⁻¹⁸ mole. The prefix atto- represents one quintillionth (0.000000000000000001) of the base unit. Although extremely small, the attomole is a practical unit in analytical chemistry, molecular biology, biochemistry, nanotechnology, and pharmaceutical research, where scientists often measure minute quantities of molecules, DNA, proteins, or other chemical substances.

Like all metric submultiples of the mole, the attomole follows the International System of Units (SI). Since one mole contains exactly 6.02214076 × 10²³ specified elementary entities, one attomole corresponds to approximately 6.022 × 10⁵ particles, depending on the type of entity being counted, such as atoms, molecules, or ions.

Attomoles are commonly encountered in highly sensitive laboratory techniques such as mass spectrometry, fluorescence assays, DNA sequencing, proteomics, and trace chemical analysis. Using attomoles allows researchers to express extremely small amounts of substances without writing long decimal values in moles.

To better understand this measurement category and related SI units, visit our complete guide to Amount of Substance.