Convert Petrograd standards to Cords
Convert Petrograd standards (Pet. std) to Cords (cord) instantly and accurately.
Conversion Formula
cord = Pet. std × 1.2890625
About Petrograd standards
The Petrograd standard (St Petersburg standard) = 165 ft³ = 4.6723 m³, representing 120 pieces of dressed Baltic softwood 12 ft × 11 in × 1.5 in = 165 ft³ exactly. Dominated 18th-19th century Baltic-to-Britain sawn-timber export trade from St Petersburg, Riga, and Danzig. Replaced by m³ in UK trade during 1970s metrication. 1 Petrograd standard = 165 ft³ = 4.6723 m³ ≈ 1,980 bf.
About Cords
The cord is the standard North American firewood/pulpwood unit = 4 ft × 4 ft × 8 ft stacked = 128 ft³ = 3.6246 m³ (exact). NIST Handbook 44 requires all US firewood to be sold in cords or legal fractions. Seasoned split hardwood ≈ 20-24 million BTU/cord; air-dry pine ≈ 15-18 million BTU/cord. 'Face cord' or 'rick' is NOT a legal unit. 1 cord = 128 ft³ = 3.6246 m³ = 8 cord feet.
Quick Reference Table
| Petrograd standards (Pet. std) | Cords (cord) |
|---|---|
| 1 Pet. std | 1.28906 cord |
| 2 Pet. std | 2.57813 cord |
| 5 Pet. std | 6.44531 cord |
| 10 Pet. std | 12.8906 cord |
| 25 Pet. std | 32.2266 cord |
| 50 Pet. std | 64.4531 cord |
| 100 Pet. std | 128.906 cord |