To calculate the area of a hole, square the radius (r) and multiply the result by pi (π). This will give you the area of the hole in square units.

## Hole Area Calculator

Enter any 2 values to calculate the missing variable

A **Hole Area Calculator** is used to compute the area of a circular hole, which can be useful for various applications like calculating the size of holes in construction, materials, or engineering projects.

**Formula:**

**HA = π × r²**

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

HA | Hole Area |

r | Radius of the Hole |

π | Pi (approximately 3.14159) |

**Solved Calculation:**

**Example 1:**

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

Given: r = 2 inches |
Start with the given radius of the hole. |

HA = π × (2)² | Square the radius and multiply by π. |

HA = π × 4 | Perform the multiplication. |

HA ≈ 12.57 square inches |
The area of the hole is approximately 12.57 square inches. |

Answer: The calculated hole area is **12.57 square inches**.

**Example 2:**

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

Given: r = 5 cm |
Start with the given radius of the hole. |

HA = π × (5)² | Square the radius and multiply by π. |

HA = π × 25 | Perform the multiplication. |

HA ≈ 78.54 square centimeters |
The area of the hole is approximately 78.54 square centimeters. |

Answer: The calculated hole area is **78.54 square centimeters**.

**What is Hole Area Calculator ?**

A **Hole Area Calculator** is a handy tool for determining the area of various types of holes, whether circular, square, or irregularly shaped. To **calculate the area of a hole**, you first need to identify its shape. For example, if it’s a circular hole, you can use the formula: Area = π × radius². This means you multiply the radius of the hole by itself and then by approximately 3.14 (π).

If you’re dealing with a square or rectangular hole, the formula is much simpler: Area = length × width. Many users may ask, **what is the area of a 2-inch hole?** You can plug the radius (1 inch, since the diameter is 2 inches) into the circular hole formula to get the area.

For more complex shapes, like a slotted hole or an irregular shape, using an **irregular shape area calculator** or a **draw shape calculate area** tool can be very helpful. These tools allow you to input the dimensions directly and receive the area instantly.

Understanding how to calculate the area of holes is useful for various projects, from construction to landscaping, ensuring you have accurate measurements for your needs.