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Truck Weight Limits Calculator
Calculate legal weight limits for your truck configuration across all 50 US states, Canadian provinces, and federal regulations. Ensure compliance and maximize your payload capacity with jurisdiction-specific calculations.
Instant Calculations
All Axle Configurations
65 Jurisdictions Covered
Understanding Weight Regulations
Federal Bridge Formula
The Federal Bridge Formula (FBF) calculates the maximum weight allowed on a group of two or more consecutive axles.
W = 500 × ((L×N)/(N-1) + 12×N + 36)
- W = Maximum weight (lbs)
- L = Distance between axles (ft)
- N = Number of axles
Common Weight Limits
- Single Axle:20,000 lbs
- Tandem Axle:34,000 lbs
- Gross Vehicle Weight:80,000 lbs
- Steer Axle:12,000-20,000 lbs
* Standard federal limits. State regulations may vary.
State-Specific Regulations
While federal regulations provide a baseline, many states have their own weight limits and permit requirements:
Common Variations:
- • Tolerance levels (typically 3-5%)
- • Seasonal weight restrictions
- • Special permits for overweight loads
- • Grandfather rights for older vehicles
Examples by Jurisdiction:
- • Michigan: Up to 164,000 lbs GVW
- • Ontario: 63,500 kg (140,000 lbs) GVW
- • Federal Interstate: 80,000 lbs standard
- • Spring restrictions: 10-40% reductions
⚠️ Important Compliance Notes
- • Always verify current regulations with state DOT
- • Consider seasonal weight restrictions on certain roads
- • Account for fuel weight when calculating payload
- • Maintain proper weight distribution across all axles
- • Keep detailed weight tickets and documentation
Need Help Optimizing Your Truck Configuration?
Our experts can help you maximize payload while ensuring full compliance.
Get Expert ConsultationWeight Limits by State & Province
View detailed weight regulations, permit requirements, and seasonal restrictions for each jurisdiction.
United States
AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming