BARK BICK'S APP FOR RESOURCE KNOW-HOW NORTHEAST FORESTS, LLC
Tree calculators
Basal area
By DBH
Tree growth rate
DBH & rings/inch
Tree carbon
By species & DBH
Sawtimber vol.
MBF per tree
Stand calculators
Timber vol./acre
MBF by size class
Woody biomass
Tons/acre
Stems/acre
BA & avg DBH
Forest carbon
Tonnes/acre by BA
Sampling
Limiting distance
BAF & DBH
Plot size
Circular & square
Reference
Get your own app
Custom branded version
About BARK
Northeast Forests
Basal area
by DBH
Tree diameter (DBH)
14inches
Basal area
1.069
square feet per tree
Formula: (DBH²) × 0.005454
Standard English unit conversion
Tree growth rate
diameter increment per year
Tree diameter (DBH)
14inches
Growth rings per inch
8rings / inch
Diameter growth rate
0.125
inches per year
112 years to grow
to current DBH
1.25 inch gain
in 10 years
Growth rates can be applied to BA, cords, tons,
MBF etc. by multiplying rate × good stock in each category.

Source: Burl Ashley's USFS Reference Handbook for Foresters
Tree carbon estimate
above & below ground
Species group
Tree diameter (DBH)
16inches
Aboveground carbon
metric tonnes C
Total C
(metric tonnes)
Total C
(short tons)
CO₂ equiv
(metric tonnes)
Jenkins et al. (2003) component ratio method.
BGB estimated at ratio derived from species allometry.

Source: USFS General Technical Report NE-319
Sawtimber tree volumes
Form Class 78 — board feet per tree
Log rule
Tree diameter (DBH)
16inches
Height (number of 16' logs to 10" top)
2.016-foot logs
Volume per tree
board feet
Mesavage & Girard Form Class Volume Tables.
For FC other than 78: add/subtract ~3% per FC unit.
DBH range: 10–28". Heights: 0.5–3.5 logs.
Timber volumes per acre
fast estimates — Form Class 78
Log rule
Size class
Average basal area per acre (sq ft)
60sq ft / acre
Average height (16' logs)
Volume per acre
MBF per acre
Results in FC 78 — add/subtract 3% per FC unit.
Source: Bick's Northern Tree, Timber and Woody Biomass Volume Tables
Woody biomass
tons per acre
Species type
Basal area per acre (sq ft)
60sq ft / acre
Average total tree height
Woody biomass
tons per acre
truck loads/acre
(@ 25-ton load)
truck loads/acre
(@ 30-ton load)
Combined species estimates, FC 78.
Source: Bick's Northern Tree, Timber and Woody Biomass Volume Tables
Tree stems per acre
from BA and average DBH
Basal area per acre (sq ft)
80sq ft / acre
Average tree diameter (DBH)
12inches
Tree stems per acre
trees per acre
Source: Burl Ashley's USFS Reference Handbook for Foresters
Forest carbon estimate
per acre from basal area
Dominant species group
Average tree diameter (DBH)
14inches
Basal area per acre (sq ft)
80sq ft / acre
Carbon per acre
metric tonnes C per acre
Short tons C
per acre
CO₂ equiv
(mt / acre)
Jenkins et al. (2003) allometric equations.
Per-acre estimate using BA/DBH ratio method.
Limiting distance
prism & angle gauge
Basal area factor (BAF)
Tree diameter (DBH)
14inches
Limiting distance — face of tree
feet
Center of tree
(feet)
PRF
(center)
Source: Powell's White Paper F14-SO-WP-SILV-44
Sample plot size
circular & square
Plot fraction
Slope correction
Circular plot radius
feet (slope corrected)
Square plot
side length (ft)
Plot area
(sq ft)
Expansion
factor
Slope correction factors per standard protocols.
Get your own app
custom branded field tools

Your name. Your brand. Your app.

Put your business or organization's name on a mobile field app like this one. Give your crews, clients, and colleagues a professional tool they'll reach for every day — on any phone, no download required.

Single organization license

The core app with your branding, your domain, and your contact information — starting at $2,500. If you can describe the calculation, we can build it.

Further customization

Custom calculators tailored to your specific operations, species, markets, or region can be added to any version. Scope and pricing depend on complexity — contact us to discuss.

Association & agency licenses

We work with industry associations, state agencies, and institutional clients who want to supply a branded tool broadly to their membership, workforce, or constituents. Contact us to discuss your needs and we'll put together a proposal.

Start a conversation ↗
Northeast Forests, LLC · steve@northeastforests.com
forestenterprise.org · lumbermen.org
Soils
maps & data

UC Davis SoilWeb

SoilWeb is the best mobile resource for soil maps and detailed series data. Uses your GPS location to show the soil directly under your feet.

Open SoilWeb ↗

Web Soil Survey (USDA)

The official USDA NRCS soil survey portal for detailed series data, interpretations, and map unit information.

Open Web Soil Survey ↗
About BARK
Northeast Forests, LLC

About this app

BARK — Bick's App for Resource Know-How — is brought to you by Dr. Steven Bick, CF of Northeast Forests LLC. Northeast Forests provides research, extension and support services to the forest products industry and the working landscape.

Get your own branded app

Put your business or organization's name on a mobile field app like this one. Give your crews, clients, and colleagues a professional tool they'll use every day.

Starting at $2,500 for the core app with your branding. Custom calculators tailored to your specific needs can be added.

Inquire about a custom app ↗

More resources

For programs, tools and information for forest business professionals, visit The Forest Business School and Lumbermen OS Suite.

More apps

For more useful programs and calculators, visit loggingchance.com.

Disclaimer

This app should be used for informational purposes only. No guarantees are made for the accuracy of calculations. This mobile app was funded exclusively by Northeast Forests, LLC. Natural resource professionals may use it and share it with their colleagues.

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