What is the stroke index (SI) in swimming?

Stroke Index = Swimming velocity (m/s) x Distance per stroke cycle (m). SI >3.0 m^2/cycle/s is considered elite; 2.0-3.0 is good for competitive swimmers; <2.0 indicates room for efficiency improvement.

How can DPS be improved?

Improving underwater catch mechanics (high elbow), reducing frontal drag (streamlined body position), and maximizing pull phase depth all increase DPS. Bilateral breathing balances stroke mechanics.

Swimming Stroke Efficiency Distance Per Stroke Calculator

Calculate swimming distance per stroke (DPS) and stroke index (SI = velocity x DPS). Higher SI indicates more efficient propulsion. Elite freestyle: SI >3.0 m^2/cycle/s.

Core Tools

Distance covered in 12 minutes (meters)

🏅 Sports Note: These calculators provide estimates based on population data and validated formulas. Individual results vary by physiology, training level, and testing conditions. Consult a qualified coach or sports scientist for personalized guidance.

How to Use

Enter the values for the scenario you are assessing. Calculate swimming distance per stroke (DPS) and stroke index (SI = velocity x DPS). Higher SI indicates more efficient propulsion. Elite freestyle: SI >3.0 m^2/cycle/s. Use the swim dps efficiency result to inform your calculation.

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Frequently Asked Questions

What is the stroke index (SI) in swimming?

How can DPS be improved?