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Universal Tire Size Converter & Analyzer | P-Metric & Flotation

Enter any P-Metric (e.g., 225/45R17) or Flotation (e.g., 33x12.50R15) tire size string to get its full dimensions and an approximate conversion to the other system.

Enter any P-Metric (e.g., 225/45R17) or Flotation (e.g., 33x12.50R15) tire size to analyze and convert.
About This Calculator

This versatile tool intelligently parses common P-Metric (e.g., 225/45R17) and Flotation (e.g., 33x12.50R15) tire size strings. Once analyzed, it calculates key dimensions like overall diameter, section width, sidewall height, and circumference. It also provides an approximate conversion to the alternative sizing system (P-Metric to Flotation or vice-versa). Perfect for quickly understanding any tire size you encounter and seeing how it might compare to another format. This calculator is your first stop for decoding complex tire markings.

How to Use This Calculator
  1. Enter the full tire size string into the input field.
  2. Supported P-Metric format: Width(mm)/AspectRatio(%)R<RimDiameter>(in). Example: `225/45R17`.
  3. Supported Flotation format: OverallDiameter(in)xSectionWidth(in)R<RimDiameter>(in). Example: `33x12.50R15`.
  4. Click the 'Analyze & Convert Tire' button.
  5. The results will show the detected tire type, its calculated dimensions, and an approximate conversion to the other sizing system.
Disclaimer

All tools and information provided on TireCalculatorHub are for informational purposes only. Tire size conversions and calculations are approximate and can vary due to manufacturing tolerances and tire wear. Always verify actual tire dimensions with the manufacturer and consult with a qualified professional before making decisions about your vehicle's tires or modifications.

TireCalculatorHub is not liable for any damages or issues arising from the use of information or tools on this website.