Convert Hoppus feet to Timber fathoms
Convert Hoppus feet (H ft) to Timber fathoms (tim. fath.) instantly and accurately.
Conversion Formula
tim. fath. = H ft × 0.003636102608
About Hoppus feet
The Hoppus foot (H ft) is a British-Commonwealth round-log unit devised by Edward Hoppus (1736): V(H ft) = (girth/4 in)² × length/ft, yielding Ο€/4 of the true cylindrical volume ≈ 78.54% - the usable square-sawn fraction. Replaced by m³ in UK trade (1963) but still used in Sri Lanka, Malaysia, Myanmar, and Bangladesh. 1 H ft = Ο€/4 ft³ ≈ 0.02224 m³.
About Timber fathoms
The timber fathom is an archaic Scottish/N.English unit = 6 ft × 6 ft × 6 ft = 216 ft³ = 6.1164 m³ (not to be confused with the nautical fathom of water depth = 6 ft length). Used in Scottish estate forestry and Lanarkshire mine pit-prop purchasing; surveyors stacked poles in a 6×6×6 ft crib to measure delivery. Superseded by ft³ and load by late 19th century. 1 timber fathom = 216 ft³ = 6.1164 m³ ≈ 2,592 bf.
Quick Reference Table
| Hoppus feet (H ft) | Timber fathoms (tim. fath.) |
|---|---|
| 1 H ft | 0.0036361 tim. fath. |
| 2 H ft | 0.00727221 tim. fath. |
| 5 H ft | 0.0181805 tim. fath. |
| 10 H ft | 0.036361 tim. fath. |
| 25 H ft | 0.0909026 tim. fath. |
| 50 H ft | 0.181805 tim. fath. |
| 100 H ft | 0.36361 tim. fath. |