Boat Weight Estimator
Estimate your boat's total weight from hull dimensions, material and load. Calculate dry weight and fully loaded displacement.
How to Use
- Enter boat length and beam for hull weight estimation
- Select hull material — this significantly affects weight
- Add engine weight if known (check manufacturer specs)
- Add fuel capacity and passenger count for loaded weight
- Gear estimate is automatically calculated at 15% of hull weight
Note: This provides estimates based on typical construction. Actual weight varies with build quality, equipment fitted, and design. Use the loaded displacement figure for other calculators like power-to-weight ratio and engine sizing.
Frequently Asked Questions
How do I find out how much my boat weighs?
The most accurate method is weighing on a certified weighbridge. For estimates, check manufacturer specs for dry weight, then add engine, fuel (0.8 kg/L), passengers (75 kg each), and gear. This calculator estimates from hull dimensions and material.
How much does a fiberglass boat weigh per foot?
As a rough guide, fibreglass boats weigh 40-60 kg per foot of length for open boats and 70-100 kg per foot for cabin boats. A 5m (16ft) open fibreglass runabout typically weighs 400-700 kg dry.