DBH Calculator
Diameter at breast height from a circumference tape, plus the multi-stem rule.
- Inputscircumference
- Outputinches DBH
Species & health
5 calculators · 4 guides · 0 comparisons
Species specs, the three diseases that change a removal decision, and the measurements every diagnosis starts from.
Where to start
Every diagnosis and every price starts from two measurements: diameter at 4.5 feet and height. The DBH calculator and the tree height calculator take both with a tape and a phone. The disease guides cover the three that most often turn a pruning job into a removal decision: oak wilt, emerald ash borer and Dutch elm disease. The species pages give mature size and hardiness zone for the trees crews meet most. Once a tree is down, the cord of wood calculator and the firewood BTU chart tell you what the wood is worth on the fire.
Calculators
Tree Height Calculator
Height from a stick, a phone clinometer or a shadow — three field methods, one answer.
- Inputsangle · distance
- Outputfeet
Cord of Wood Calculator
Full cords, face cords and ricks from stack dimensions — and what you actually bought.
- InputsL × H × depth
- Outputcords
Firewood BTU Chart
Heat per cord by species, sorted, with the seasoning time each one needs.
- Inputsspecies
- OutputMBTU / cord
Tree Planting Spacing Calculator
How far apart, and how far from the house, from the mature spread of the species you plant.
- Inputsspread · row length
- Outputft · tree count
Guides
- Oak Wilt Treatment10 minThe fungus that moves through root grafts, and the trenching window that stops it.
- Emerald Ash Borer Treatment10 minTreat or remove — the canopy-thinning threshold that settles it.
- Dutch Elm Disease9 minFlagging, sapwood streaking, and why the chipper matters more than the spray.
- Firewood Seasoning Time8 minHow long each species takes to dry below 20% moisture, and how to tell when it has.