What does RFD measure?

RFD measures how quickly an athlete can develop force, typically expressed as N/s or N/s/kg. A higher RFD means the athlete can generate force more explosively, which is critical in sports with short ground contact times.

How is RFD calculated?

RFD = ΔForce / ΔTime. The early RFD (0-50ms and 0-100ms) is particularly sport-relevant as it represents neural drive before muscle architecture contributes significantly.

How do you improve RFD?

Heavy compound lifts improve maximal force, while plyometrics, ballistic training, and sprint work improve the neural component of RFD. Both qualities must be trained for optimal results.

Rate of Force Development Calculator

Calculate rate of force development (RFD) as the slope of the force-time curve, a key indicator of explosive strength and neuromuscular efficiency.

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Frequently Asked Questions

What does RFD measure?

How is RFD calculated?

How do you improve RFD?