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Horsepower from torque
Estimate mechanical horsepower from torque and rotational speed.
Calculators / Sports / Cycling power-to-weight
Cycling power-to-weight calculator
Calculate cycling power-to-weight ratio and target power.
On this page
Current power-to-weight3.33W/KG
Power for target ratio300W
Additional power needed50W
Calculator controls
How to calculate
Calculate cycling power-to-weight ratio and target power.
power-to-weight = power ÷ rider mass
Worked example
Sustained power (W): 250; Rider mass (kg): 75; Target ratio (W/kg): 4.
Current power-to-weight: 3.33 W/kg; Power for target ratio: 300 W; Additional power needed: 50 W.
Assumptions and limits
Duration, aerodynamics, rolling resistance, gradient, conditions, equipment, and test protocol all affect performance.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Calculate cycling power-to-weight ratio and target power. Every assumption remains visible so the result can be checked or changed.
When this tool is useful
Use the cycling power-to-weight for an initial estimate, comparison, or classroom calculation.
Understanding your inputs
| Input | What to enter |
|---|---|
| Sustained power (W) | Enter a number of at least 0 and no more than 1000000000000. |
| Rider mass (kg) | Enter a number of at least 0.000001 and no more than 1000000000000. |
| Target ratio (W/kg) | Enter a number of at least 0 and no more than 1000000000000. |
Frequently asked questions
What are the limits of this cycling power-to-weight?
Duration, aerodynamics, rolling resistance, gradient, conditions, equipment, and test protocol all affect performance.
Can I use different units?
Use the units printed beside each field. Convert measurements first when your source uses different units.