How many fathoms are in 1 parsec?

One parsec contains approximately 1.688 x 1016 fathoms.

How many parsecs is 1 fathom?

One fathom equals approximately 5.926 x 10-17 parsecs.

Do both units describe empty space?

Yes. Interstellar space (parsecs) and deep ocean (fathoms) are both vast, dark, mostly empty. One is vacuum with sparse atoms; the other is water with sparse life. Both are inhospitable to humans.

Parsecs to Fathoms (pc to ftm) Converter

1 pc = 1.68727 × 10¹⁶ ftm

1 Parsec equals 1.68727 × 10¹⁶ Fathoms (1 pc = 1.68727 × 10¹⁶ ftm). Convert Parsecs to Fathoms with formula, table, and examples.

One parsec equals approximately 1.688 x 10¹⁶ fathoms (about 16.9 quadrillion). The parsec measures the space between stars; the fathom measures the depth of the sea. Both describe vast, dark, largely empty domains.

How to Convert Parsecs to Fathoms

ftm = pc × 1.68727 × 10¹⁶

Multiply the value in Parsecs by 1.68727 × 10¹⁶

Take your value in Parsecs
Multiply by 1.68727 × 10¹⁶
Read the result in Fathoms

Common Parsecs to Fathoms Conversions

Parsecs (pc)	Fathoms (ftm)	Status
1 × 10⁻¹³ pc	1,687.269 ftm
1 × 10⁻¹² pc	16,872.6902 ftm
1 × 10⁻¹¹ pc	168,726.9019 ftm
1 × 10⁻¹⁰ pc	1,687,269.0188 ftm
1 × 10⁻⁹ pc	16,872,690.1875 ftm
1 × 10⁻⁸ pc	168,726,901.8751 ftm
1 × 10⁻⁷ pc	1,687,269,018.7508 ftm
0.000001 pc	16,872,690,187.5075 ftm
0.00001 pc	168,726,901,875.0748 ftm
0.0001 pc	1,687,270,000,000 ftm
0.001 pc	16,872,700,000,000 ftm
0.01 pc	168,727,000,000,000 ftm
0.1 pc	1.68727 × 10¹⁵ ftm
1 pc	1.68727 × 10¹⁶ ftm
1.3 pc	2.19345 × 10¹⁶ ftm

Good to Know About Parsecs to Fathoms Conversion

The fathom and parsec measure humanity's two great unknowns: the ocean deep and interstellar space. Both were terrifying to early explorers. Both are now mapped (partially). The fathom charted the ocean floor; the parsec charts the stellar neighborhood. Measurement is how humans tame the unknown.

Parsecs to Fathoms: What You Need to Know

A parsec is about 16.9 quadrillion fathoms. The Mariana Trench (6,011 fathoms) is 3.56 x 10^-13 parsecs deep. The ocean's deepest point barely registers on the parsec scale. The cosmos dwarfs even the deepest sea.

What is a Parsec? pc

The distance at which one astronomical unit subtends an angle of one arcsecond. Approximately 3.26 light-years or 30.857 trillion kilometers. The standard unit in professional astronomy.

Astronomical professional astronomy galactic distances

Learn more about Parsec →

What is a Fathom? ftm

Exactly 6 feet (1.8288 m). Traditionally used to measure water depth in nautical contexts. Originally based on the span of outstretched arms.

Imperial water depth nautical marine charts

Learn more about Fathom →

Going the other way? Use our Fathoms to Parsecs converter.

Parsecs to Fathoms FAQ

One parsec contains approximately 1.688 x 10¹⁶ fathoms.
One fathom equals approximately 5.926 x 10^-17 parsecs.
Yes. Interstellar space (parsecs) and deep ocean (fathoms) are both vast, dark, mostly empty. One is vacuum with sparse atoms; the other is water with sparse life. Both are inhospitable to humans.

Non-Frequently Asked Questions About Parsecs to Fathoms

Questions nobody should ask - but someone did.

Deep space wins. Interstellar space has about 1 atom per cubic centimeter. Deep ocean has about 3.3 x 10²² molecules per cubic centimeter (water). Deep space is about 10²² times emptier than deep ocean. But deep ocean is darker (sunlight cannot reach the bottom). The ocean is denser but darker; space is emptier but starlit.
Average ocean depth is 2,024 fathoms. 1 parsec (1.688 x 10¹⁶ fathoms) = about 8.34 billion ocean depths stacked. Eight billion oceans deep equals 1 parsec high. The cosmos is an unfathomable number of oceans deep.
A submarine is designed for 300-1,000 fathoms of pressure. Interstellar space has zero pressure. A submarine would explode in space (internal pressure with no external counter-pressure), not implode. The engineering is exactly backwards. Submarines and spacecraft are structural opposites.