A fathom is six feet.
Fathoms to Decameters Converter — ftm to dam
Convert Fathom (ftm) to Decameter (dam) using the exact conversion factor (1 fathom = 0.18288 decameter). See the formula, worked examples, and conversion table.
Fathoms to Decameters 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.
Decameter is 10 meter units.
Result = input x 1.8288 / 10.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Fathoms to Decameters
Fathom and Decameter both measure length. Specifically: A fathom is six feet, and decameter is 10 meter units.
Formula
decameters = fathoms × 0.18288
This factor comes from each unit's defined relationship to the category's base unit: 1 fathom equals 1.8288 base units, and 1 decameter equals 10 base units, so dividing one by the other gives the direct fathom-to-decameter factor of 0.18288.
Simple example
1 ftm × 0.18288 = 0.18288 dam
1 fathom = 0.18288 decameters.
Real-world example
10 ftm × 0.18288 = 1.8288 dam
10 fathoms = 1.8288 decameters.
Conversion table
| Fathom (ftm) | Decameter (dam) |
|---|---|
| 1 ftm | 0.18288 dam |
| 5 ftm | 0.9144 dam |
| 10 ftm | 1.8288 dam |
| 21.0975 ftm | 3.8583108 dam |
| 42.195 ftm | 7.7166216 dam |
| 100 ftm | 18.288 dam |
Reverse conversion: Decameter to Fathom
0.18288 dam × 5.468066492 = 1 ftm
0.18288 decameters = 1 fathoms.
fathoms = decameters × 5.46806649169
For a page dedicated to this direction, see Decameter to Fathom.
Understanding the Fathom (ftm)
A fathom is six feet.
Understanding the Decameter (dam)
Decameter is 10 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many decameters are in 1 fathom?
1 fathom equals 0.18288 decameters, using the exact defined conversion factor rather than an estimate.
How do I convert fathom to decameter?
Multiply the fathom value by 0.18288. The converter above does this instantly to whatever precision you set.
How do I convert decameter back to fathom?
Use the reverse factor: 1 decameter equals 5.468066492 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 decameter?
Decameter (dam) is a unit of length.
Is the fathom to decameter conversion exact?
Yes. Both fathom and decameter are defined by fixed standards rather than physical artifacts, so the factor of 0.18288 used above is exact to as many digits as you choose to display.