1. What is Horsepower Per Ton?

Horsepower per ton (hp/tonne) is a measurement of power-to-weight ratio that indicates how much power is available for each ton of weight. It's commonly used to compare vehicle performance.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( HP \) — Engine horsepower
• \( Weight \) — Vehicle weight in kilograms

Explanation: The formula converts the weight from kilograms to metric tons (by dividing by 1000) and then divides the horsepower by this value to get the power-to-weight ratio.

3. Importance of HP/Tonne Calculation

Details: The hp/tonne ratio is a key performance indicator for vehicles. Higher ratios generally mean better acceleration and climbing ability. It's particularly important for comparing vehicles of different sizes.

4. Using the Calculator

Tips: Enter the vehicle's horsepower and weight in kilograms. Both values must be positive numbers. The calculator will automatically compute the hp/tonne ratio.

5. Frequently Asked Questions (FAQ)

Q1: What's a good hp/tonne ratio?
A: For passenger cars, 100 hp/tonne is decent, 150+ is sporty, and 200+ is high-performance. Race cars often exceed 500 hp/tonne.

Q2: How does this compare to lb/hp?
A: These are inverse measurements. Some regions prefer lb/hp while others use hp/tonne. Lower lb/hp or higher hp/tonne both indicate better performance.

Q3: Should I use curb weight or gross weight?
A: For performance comparisons, curb weight (empty vehicle weight) is typically used. For practical load capacity calculations, gross weight may be more appropriate.

Q4: Does this account for drivetrain losses?
A: No, this uses engine horsepower. For wheel horsepower figures, the ratio would be slightly lower due to drivetrain losses.

Q5: How accurate is this calculation?
A: The calculation is mathematically precise, but real-world performance depends on many other factors like gearing, aerodynamics, and traction.