KNOW THE WEIGHT
BEFORE THE LIFT
Accurate green log weight estimates for arborists, crane operators, and forestry professionals. Scientific formulas, GPS tracking, and cloud sync — all from your phone.
161 Tree Species · U.S. Forest Service Data
Built for Reliable Estimates
U.S. Forest Service Data
161 tree species with green wood density data from the U.S. Forest Service. Smalian's and Newton's formulas deliver accurate estimates you can trust.
Works Offline
Calculate log weights anywhere — no cell signal required. Built for remote forests, rural job sites, and wherever the work takes you.
Cloud Sync & Jobs
Sync log entries across all devices via Firebase. Group entries by job, tag with GPS coordinates, and view your work sites on a map.
Note: Weights are estimates only. Actual log weights may vary.
Trusted by Arborists
Why Arborists Choose Log Weight Pro
Field-Tested Since 2018
Available on the App Store since 2018. Tested, refined, and trusted by arborists and tree service professionals on real job sites.
Plan Safer Lifts
Know what a log weighs before the rigging goes up. Give crane operators reliable estimates for lift planning and load assessments.
Track Every Job
Keep a complete record of every log entry, organised by job. Cloud-synced history means your data is always accessible, on any device.
Essential Safety Tool for Crane Operators
Estimate log weights before rigging to help assess safe working loads. Compare estimates against crane LMI capacity to support safer lift planning on every job.
In the Field
Trusted by Professionals
“I’ve used the Log Weight Pro App for many years now, and it’s great.”
Jeff Inman, Jr., CTSP — “Where Is the Weak Link?”
“We often use tools like the Log Weight Pro app… This prevents the jerking of the crane that can happen if a piece is much heavier than expected.”
“Branching Out With Professional Crane Tree Removal Techniques”
“As an operator, I always use Log Weight Pro, per species, to adjust with crane LMI… usually just floats free when cut.”
Mike W. — Crane Operator
Get Started
Estimate Smart.
Work Safe.
Free download. Add Log Weight Pro to your gear list.