A fathom is six feet.
Fathoms to Gigameters Converter — ftm to Gm
Convert Fathom (ftm) to Gigameter (Gm) using the exact conversion factor (1 fathom = 1.8288e-9 gigameter). See the formula, worked examples, and conversion table.
Fathoms to Gigameters converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
Gigameter is 1000000000 meter units.
Result = input x 1.8288 / 1e+9.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Fathoms to Gigameters
Fathom and Gigameter both measure length. Specifically: A fathom is six feet, and gigameter is 1000000000 meter units.
Formula
gigameters = fathoms × 1.8288e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 fathom equals 1.8288 base units, and 1 gigameter equals 1000000000 base units, so dividing one by the other gives the direct fathom-to-gigameter factor of 1.8288e-9.
Simple example
1 ftm × 1.8288e-9 = 1.8288e-9 Gm
1 fathom = 1.8288e-9 gigameters.
Real-world example
10 ftm × 1.8288e-9 = 1.8288e-8 Gm
10 fathoms = 1.8288e-8 gigameters.
Conversion table
| Fathom (ftm) | Gigameter (Gm) |
|---|---|
| 1 ftm | 1.8288e-9 Gm |
| 5 ftm | 9.144e-9 Gm |
| 10 ftm | 1.8288e-8 Gm |
| 21.0975 ftm | 3.858311e-8 Gm |
| 42.195 ftm | 7.716622e-8 Gm |
| 100 ftm | 1.8288e-7 Gm |
Reverse conversion: Gigameter to Fathom
1.8288e-9 Gm × 546806649.2 = 1 ftm
1.8288e-9 gigameters = 1 fathom.
fathoms = gigameters × 546806649.169
For a page dedicated to this direction, see Gigameter to Fathom.
Understanding the Fathom (ftm)
A fathom is six feet.
Understanding the Gigameter (Gm)
Gigameter is 1000000000 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gigameters are in 1 fathom?
1 fathom equals 1.8288e-9 gigameters, using the exact defined conversion factor rather than an estimate.
How do I convert fathom to gigameter?
Multiply the fathom value by 1.8288e-9. The converter above does this instantly to whatever precision you set.
How do I convert gigameter back to fathom?
Use the reverse factor: 1 gigameter equals 546,806,649.2 fathoms. You can also use the swap control in the converter above to flip the direction instantly.
What is a fathom?
Fathom (ftm) is a unit of length.
What is a gigameter?
Gigameter (Gm) is a unit of length.
Is the fathom to gigameter conversion exact?
Yes. Both fathom and gigameter are defined by fixed standards rather than physical artifacts, so the factor of 1.8288e-9 used above is exact to as many digits as you choose to display.