Marine Power-to-Weight Calculator
Divide user-entered rated horsepower by loaded mass in metric tonnes.
A QUICK WALKTHROUGH
How to use this tool
- Enter nonnegative rated horsepower using a consistent rating basis.
- Enter positive loaded mass in metric tonnes, then calculate.
- Calculate, then copy the report or download TXT.
Calculation
hp/t = rated horsepower ÷ loaded metric tonnes. One metric tonne is 1,000 kg.
What the result covers
This is a power-to-loaded-mass ratio, not a speed prediction or performance rating. It does not infer propulsion efficiency, hull behaviour, sea state or safe loading. No horsepower convention is converted; use a consistent rating basis.
Local processing
Inputs remain in your browser. Copy and TXT download contain your inputs, results, formula and scope note.
GOOD TO KNOW
Common questions
Does higher hp/t determine boat speed?
No. This ratio alone cannot establish speed or performance.
Can I enter kilograms or short tons directly?
No. Supply loaded mass in metric tonnes; convert other units independently.