To determine the chainring diameter, multiply the number of teeth (N) by the pitch (P), then divide the result by pi (π). This gives you the chainring diameter (D) in inches or millimeters.

**The Chamfer Diameter Calculator is a useful tool used in various industries, especially in engineering and manufacturing.** It helps determine the diameter of a chamfer, which is a beveled edge or corner often added to objects for safety, aesthetics, or functionality.

**Formula:**

**D = (N × P) ÷ π**

Symbol | Meaning |
---|---|

D | Chainring Diameter |

N | Number of Teeth |

P | Pitch (distance between teeth) |

π | Pi (approximately 3.14159) |

**Solved Calculation:**

**Example 1:**

Calculation |
Instructions |
---|---|

Given: N = 40 teeth, P = 0.5 inches |
Start with the given number of teeth and pitch. |

D = (40 × 0.5) ÷ π | Multiply the number of teeth by the pitch, then divide by pi. |

D = 20 ÷ 3.14159 | Perform the division. |

D = 6.37 inches |
The chainring diameter is 6.37 inches. |

Answer: The calculated chainring diameter is **6.37 inches**.

**Example 2:**

Calculation |
Instructions |
---|---|

Given: N = 52 teeth, P = 0.5 inches |
Start with the given number of teeth and pitch. |

D = (52 × 0.5) ÷ π | Multiply the number of teeth by the pitch, then divide by pi. |

D = 26 ÷ 3.14159 | Perform the division. |

D = 8.28 inches |
The chainring diameter is 8.28 inches. |

Answer: The calculated chainring diameter is **8.28 inches**.

**What is Chainring Diameter Calculator ?**

A **Chainring Diameter Calculator** is a useful tool for cyclists who want to determine the size of their bike’s chainring. The diameter of the chainring affects how easy or hard it is to pedal. You can find this diameter based on the number of teeth on the chainring.

For instance, if you have a **40T chainring**, the calculator can provide the exact diameter in millimeters or inches, making it easier to choose the right gear for your bike.

To measure the chainring diameter, you can use a formula that relates the number of teeth to the diameter. Generally, each tooth count corresponds to a specific diameter, and using a **chainring diameter chart** can help you find this information quickly.

Some apps also allow you to input your chainring’s tooth count to calculate its diameter instantly. Understanding the relationship between chainring size and performance can help you select the best setup for your riding style, whether you’re on a road bike or a mountain bike.