Convert Cubic feet to Hoppus feet
Convert Cubic feet (ft³) to Hoppus feet (H ft) instantly and accurately.
Conversion Formula
H ft = ft³ × 1.273239545
About Cubic feet
The cubic foot (ft³) = 0.028316846592 m³ (exact) - the primary US lumber volume unit for large structural timber; also underlies the cord (128 ft³) and board foot (1 bf = 1/12 ft³ nominal). US Forest Service sale contracts specify cruise volumes in Mbf or ft³. Export docs for EU/Asia convert to m³: 1 m³ = 35.315 ft³. 1 ft³ = 0.02832 m³ = 1,728 in³ ≈ 12 bf.
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.
Quick Reference Table
| Cubic feet (ft³) | Hoppus feet (H ft) |
|---|---|
| 1 ft³ | 1.27324 H ft |
| 2 ft³ | 2.54648 H ft |
| 5 ft³ | 6.3662 H ft |
| 10 ft³ | 12.7324 H ft |
| 25 ft³ | 31.831 H ft |
| 50 ft³ | 63.662 H ft |
| 100 ft³ | 127.324 H ft |