Log splitter tonnage calculator
The splitting force of a hydraulic log splitter from its cylinder bore and pump pressure.
How it works
Force = cylinder area × pressure. Area = π × (bore ÷ 2)². A 4-inch bore at 3,000 psi gives about 37,700 lbf, or about 18.8 US tons. Marketing figures are often rounded up, so this is a useful check.
Quick reference
| 3½ in | 2,500 psi | ~12 tons |
| 4 in | 3,000 psi | ~19 tons |
| 4½ in | 3,000 psi | ~24 tons |
| 5 in | 3,000 psi | ~29 tons |
Most softwood rounds split easily at 20 tons. Knotty hardwood may need 25 tons or more.
Questions
Is it dangerous?
Log splitters cause crushing injuries and finger amputations. Use the two-handed controls and keep helpers clear.
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