A fathom is six feet.
Fathoms to Decimeters Converter — ftm to dm
Convert Fathom (ftm) to Decimeter (dm) using the exact conversion factor (1 fathom = 18.288 decimeter). See the formula, worked examples, and conversion table.
Fathoms to Decimeters 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.
Decimeter is 0.1 meter units.
Result = input x 1.8288 / 0.1.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Fathoms to Decimeters
Fathom and Decimeter both measure length. Specifically: A fathom is six feet, and decimeter is 0.1 meter units.
Formula
decimeters = fathoms × 18.288
This factor comes from each unit's defined relationship to the category's base unit: 1 fathom equals 1.8288 base units, and 1 decimeter equals 0.1 base units, so dividing one by the other gives the direct fathom-to-decimeter factor of 18.288.
Simple example
1 ftm × 18.288 = 18.288 dm
1 fathom = 18.288 decimeters.
Real-world example
10 ftm × 18.288 = 182.88 dm
10 fathoms = 182.88 decimeters.
Conversion table
| Fathom (ftm) | Decimeter (dm) |
|---|---|
| 1 ftm | 18.288 dm |
| 5 ftm | 91.44 dm |
| 10 ftm | 182.88 dm |
| 21.0975 ftm | 385.83108 dm |
| 42.195 ftm | 771.66216 dm |
| 100 ftm | 1,828.8 dm |
Reverse conversion: Decimeter to Fathom
18.288 dm × 0.05468066492 = 1 ftm
18.288 decimeters = 1 fathoms.
fathoms = decimeters × 0.0546806649169
For a page dedicated to this direction, see Decimeter to Fathom.
Understanding the Fathom (ftm)
A fathom is six feet.
Understanding the Decimeter (dm)
Decimeter is 0.1 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many decimeters are in 1 fathom?
1 fathom equals 18.288 decimeters, using the exact defined conversion factor rather than an estimate.
How do I convert fathom to decimeter?
Multiply the fathom value by 18.288. The converter above does this instantly to whatever precision you set.
How do I convert decimeter back to fathom?
Use the reverse factor: 1 decimeter equals 0.0546806649 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 decimeter?
Decimeter (dm) is a unit of length.
Is the fathom to decimeter conversion exact?
Yes. Both fathom and decimeter are defined by fixed standards rather than physical artifacts, so the factor of 18.288 used above is exact to as many digits as you choose to display.