Convert angstroms to fathoms

1 Å=5.4681e-11ftm

Use the converter below to change any angstroms value into fathoms instantly — with formula, conversion table, and real-world examples.

You have

Equals

5.4681e-11

Conversion formula

Forward

fathoms = angstroms × 5.4681e-11

Reverse

angstroms = fathoms × 18,288,000,000

Example: 10 Å × 5.4681e-11 = 5.4681e-10 ftm.

About both units

From

Angstrom

The angstrom equals 10⁻¹⁰ meters or 0.1 nanometers. It is used in chemistry and crystallography for atomic and molecular dimensions. The Bohr radius — the characteristic size of a hydrogen atom — is 0.529 Å. Covalent bond lengths are typically 1–2 Å.

Real-world: A water molecule is about 1 Å across. The covalent bond in H₂ is 0.74 Å. X-ray wavelengths are 0.1–100 Å.

Read full angstrom reference →

Fathom

ftm

The fathom equals exactly 6 feet or 1.8288 meters. It is the traditional marine unit for water depth, used on older nautical charts and in recreational sailing. Modern charts mark depths in metres, but fathoms still appear in maritime literature and older US charts.

Real-world: A "mark twain" reading — made famous by the Mississippi riverboats — meant 2 fathoms (3.66 m) of water, the minimum safe depth.

Read full fathom reference →

Angstrom to Fathom conversion table

Common angstroms to fathoms values for quick reference.

Angstrom (Å)	Fathom (ftm)
1 Å	5.4681e-11 ftm
5 Å	2.7340e-10 ftm
10 Å	5.4681e-10 ftm
25 Å	1.3670e-9 ftm
50 Å	2.7340e-9 ftm
100 Å	5.4681e-9 ftm
250 Å	1.3670e-8 ftm
500 Å	2.7340e-8 ftm
1,000 Å	5.4681e-8 ftm
5,000 Å	2.7340e-7 ftm

Tips & common mistakes

Quick tips

1 Å = 0.1 nm = 100 pm. Modern SI recommends nm or pm for new publications.
The ångström is named after the Swedish physicist Anders Jonas Ångström.
For quick atomic-scale intuition: most atoms are 1–3 Å across.

Avoid these

Mixing up Å with µm — the scale differs by 10,000×.
Using Å for anything macroscopic — always use nm or mm for things visible under a light microscope.
Forgetting the diacritic in "Ångström" — the symbol Å avoids spelling issues.

Frequently asked questions

How many fathoms in a angstrom?

One angstrom equals 5.4681e-11 fathoms.

How do I convert angstroms to fathoms?

Multiply the angstrom value by 5.4681e-11 to get the equivalent in fathoms.

What is 100 angstroms in fathoms?

100 angstroms equals 5.4681e-9 fathoms.

Is a angstrom bigger than a fathom?

No. 1 angstrom equals 5.4681e-11 fathoms, so one angstrom is smaller.

How to convert angstroms to fathoms without a calculator?

Multiply by 0 for a quick estimate; use a calculator for precise results.

Related length conversions

📊 See full comparison matrix →

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