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Power to Weight Ratio Formula:
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Power to weight ratio (HP/Ton) is a performance metric that measures the amount of power available per unit of weight. It's commonly used in automotive and engineering applications to compare vehicle performance capabilities.
The calculator uses the power to weight ratio formula:
Where:
Explanation: The formula calculates how much horsepower is available for each ton of vehicle weight, providing a standardized performance comparison metric.
Details: A higher power to weight ratio generally indicates better acceleration and performance. This metric is crucial for vehicle design, performance tuning, and competitive racing applications.
Tips: Enter horsepower in hp and weight in pounds. Both values must be positive numbers. The calculator will automatically compute the power to weight ratio in hp/ton.
Q1: What is a good power to weight ratio?
A: For passenger cars, 100-150 hp/ton is average, 150-200 hp/ton is good, and 200+ hp/ton is considered high performance. Sports cars often exceed 300 hp/ton.
Q2: How does power to weight affect acceleration?
A: Higher power to weight ratios generally result in faster acceleration, as there's more power available to overcome the vehicle's inertia.
Q3: Can I use different weight units?
A: This calculator uses pounds as input. If you have weight in kilograms, multiply by 2.20462 to convert to pounds first.
Q4: Why is power to weight important in racing?
A: In racing, power to weight is a key performance indicator that helps predict acceleration capabilities and overall vehicle performance potential.
Q5: Does this account for drivetrain losses?
A: No, this calculation uses engine horsepower. For wheel horsepower (accounting for drivetrain losses), use the actual measured wheel horsepower value.