📏 RCS Calculator

Racquet Comfort Score - the firmness index of your configuration

ℹ️

What is RCS?

The RCS is a firmness index of your equipment: racquet stiffness, string stiffness and tension. A low index = a softer setup, a high index = a firmer setup; from 35, there is a tennis elbow risk.

🎾 Racquet Stiffness (RA)

Select a racquet:

RA Index

54 (Flexible) 63 (Medium) 72 (Stiff)

🧵 String Stiffness

Select a string:

180

lb/in

88 (Gut) 180 (Multi) 275 (Stiff Poly)

Quick presets by type:

⚡ String Tension

18 kg (Low) 24 kg (Medium) 30 kg (High)

💡 Tip: Low tension (18-22 kg) favors comfort, high tension (26-30 kg) favors control.

👤 Your Profile (optional)

Select your profile for a personalized evaluation.

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RCS Score

⚖️ RCS index

Set your racquet, string and tension

Softer setup Firmer setup

📋 Detailed Analysis

📊 Score Contributions

🎾 Racquet (RA) 14.0 pts

🧵 String 26.5 pts

⚡ Tension 11.0 pts

🔗 Interaction 1.3 pts

The string is generally the dominant factor (~42%), followed by the racquet (~28%) and tension (~22%).

The RCS score is divided into 5 main zones for easier interpretation:

Click on a cell to apply that configuration:

RA \ String	🥩 Gut (95)	🧶 Multi (155)	🔸 Synth (185)	⬛ Poly (235)

* Values calculated with average tension of 24 kg

🔬 About the RCS Score

Methodology

The RCS score is calculated using a proprietary algorithm developed by Tennis String Advisor, integrating the latest research in tennis biomechanics.

Scientific Validation

Our model is based on reference works in tennis science and has been calibrated on real data from players of all levels.