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Watt per Kilogram

0.00

kiloWatt per Kilogram

0.00

MegaWatt per Kilogram

0.00

Horsepower (mech) per Kilogram

0.00

Horsepower (mech) per Pound

0.00

Horsepower per Ton (hp/ton)

0.00

How the Power to Weight Ratio Calculator Works

1.

Enter Power: Input the power output of an object, machine, or engine. You can select from various units like Watts, Kilowatts, Horsepower (Imperial or Metric), and more.

2.

Enter Weight: Input the weight or mass of the object. Choose from units such as Kilograms, Pounds, Grams, Tons, and Ounces.

3.

View Results: The calculator instantly computes the Power to Weight ratio and displays it in multiple common units, including Watts per Kilogram, Horsepower per Pound, and Horsepower per Ton.

4.

Edit Results: Click on any result card to edit its value. The calculator will then reverse-calculate and update the primary 'Power' input based on your new desired ratio, keeping the 'Weight' constant.

Why Engineers & Enthusiasts Love Our Calculator

"Essential for my automotive projects. Quick conversions and the ability to reverse-calculate power is incredibly useful!"

— David, Automotive Engineer

"This calculator is fantastic for comparing different vehicles and designs. The range of units covers everything I need."

— Sarah, Aerospace Hobbyist

"Simple, accurate, and saves me time. No more manual conversions when planning my drone builds."

— Alex, Drone Designer

FAQ

Frequently Asked Questions

Power to weight ratio is a measurement of actual performance of any engine or power source. It is usually calculated by dividing the power output by the mass or weight. A higher power to weight ratio generally indicates better performance, acceleration, and efficiency for vehicles, aircraft, or machinery.
The calculator supports a wide range of units. For power, you can use Watts (mW, W, kW, MW, GW), Horsepower (Imperial and Metric), and Joules per second. For weight, options include Grams, Kilograms, Pounds, Ounces, Metric Tons, US Tons, and Long Tons.
Yes, the calculator automatically displays the Power to Weight ratio in several common result units (W/kg, kW/kg, hp/lb, hp/ton, etc.). You can easily see how the ratio translates across different unit systems.
When you click and change a value in any of the result cards, the calculator performs a reverse calculation. It takes your new desired Power to Weight ratio and the existing weight value to determine what the new 'Power' input should be, then updates the main Power input field accordingly. This is useful for target-setting or "what-if" scenarios.