Tire Pressure Temperature Calculator

Convert tire pressure between different temperatures using the ideal gas law. This calculator helps you determine the correct tire pressure based on temperature changes.

Input Parameters

Calculation Results

Final Pressure (PSI)

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Calculation Formula

P₂ = P₁ × (T₂/T₁)

Where:
P₁ = Initial Pressure
T₁ = Initial Temperature (°R) = T°F + 459.67
T₂ = Final Temperature (°R) = T°F + 459.67
P₂ = Final Pressure

Tire Pressure Temperature Calculator Usage Guide

Learn how to use the Tire Pressure Temperature Calculator and its working principles

How to Use This Calculator

  1. Enter your initial tire pressure in PSI (pounds per square inch).
  2. Enter the initial temperature of your tire in Fahrenheit (°F).
  3. Enter the final temperature you want to determine the pressure for in Fahrenheit (°F).
  4. Click the "Calculate" button to compute the final tire pressure.
  5. The calculator will display the final pressure based on the ideal gas law formula.

Working Principle

Tire pressure changes with temperature due to the ideal gas law. As temperature increases, gas molecules move faster and exert more pressure on the tire walls. This calculator uses the formula:

P₂ = P₁ × (T₂/T₁)

Where:

  • P₁ = Initial Pressure
  • T₁ = Initial Temperature in Rankine (°R = °F + 459.67)
  • T₂ = Final Temperature in Rankine (°R = °F + 459.67)
  • P₂ = Final Pressure

Practical Tips

This calculator is particularly useful when planning long trips or when weather conditions change significantly. It helps you adjust your tire pressure to maintain optimal performance and fuel efficiency. Remember to check your vehicle's recommended tire pressure and always inflate tires when they are cold (before driving) for the most accurate reading.