Tennis Rating Tools
Free calculators to help you understand and navigate tennis rating systems
Tennis ratings can be confusing. Between UTR, WTN, and NTRP, it's hard to know where your child stands or how different match results might affect their rating. These tools help you make sense of it all.
String Selector
Answer a few questions to find the perfect tennis string for your junior player based on age, skill, and playing style.
Use Tool →WTN to UTR Converter
Convert between World Tennis Number (WTN) and Universal Tennis Rating (UTR) with our research-backed calculator.
Use Tool →UTR Match Predictor
Predict match outcomes and win probability based on UTR ratings. See who has the edge before you play.
Use Tool →UTR Rating Impact
Estimate how a match result will affect your UTR rating. Understand what moves the needle.
Use Tool →A Note on Accuracy
These calculators are educational tools based on publicly available research and documentation. The actual UTR and WTN algorithms are proprietary, so our calculations are approximations. Use them to understand general trends and make informed decisions, but always check official sources for your actual ratings.
UTR is a registered trademark of Universal Tennis. WTN is a trademark of the International Tennis Federation. These tools are not affiliated with or endorsed by either organization.