First, find the **bending moment** (M) that the beam needs to handle. Then, multiply this by 6 and take the **cube root** of the result. This will give you the correct **height** of the beam for your project.

## Beam Size Calculator

Enter any 2 values to calculate the missing variable

A **beam size calculator** is a helpful tool used in construction to determine the correct beam dimensions based on the bending moment and material type. This tool ensures that you select the right size beam for your structure.

### Formula:

$h = (6 \times M)^{1/3}$

Where:

Variable |
Meaning |
---|---|

h | Height of the beam |

M | Bending moment |

**Example Calculation:**

Letâ€™s say the bending moment (M) is 400 kNm. We can use the formula to calculate the height of the beam (h).

$h = (6 \times 400)^{1/3} = (2400)^{1/3} = 13.47 \, \text{meters}$

Step |
Calculation |
---|---|

Bending moment (M) | 400 kNm |

Multiply by 6 | $6 \times 400 = 2400$ |

Cube root of the result | $2400^{1/3} = 13.47$ |

Final Answer | 13.47 meters |

**Answer**: The height of the beam is 13.47 meters.

**What is a Beam Size Calculator?**

A **beam size calculator** is a tool used to determine the correct height and dimensions for beams used in construction, based on factors like the bending moment.

The calculator helps answer questions such as **“how do I calculate what size beam I need”** or **“what size beam for a 7-meter span”**, making it easier for engineers or builders to decide on the appropriate beam size for different structures. Whether working with wood, steel, or concrete, a **beam size calculator** provides a quick and efficient way to ensure structural integrity.

These calculators are especially useful for determining the **beam size for wood** or **steel beam sizes**, and they often include special tools like the **steel beam size calculator free** or **beam size calculators for wood**. They help simplify complex calculations, ensuring that you choose the right size for the required load-bearing capacity, whether for a ceiling, deck, or large spans.