BDI
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The BDI Calculator is an online tool that helps calculate the cost of extra materials in construction projects. It performs precise calculations based on the provided data, taking into account the quantity of materials needed and the unit cost of each item.
The underlying formula of the BDI Calculator considers the cost of extra materials, including finishing materials, accessories, and other elements that are not part of the main work. This allows construction professionals to get a clear view of the total cost of the project.
The BDI Calculator should be used in construction projects that involve the installation of extra materials, such as floors, walls, ceilings, and equipment. Additionally, it's essential to consider the costs of transportation and storage of materials.
It's crucial to be careful when providing accurate and complete data to the calculator, as this will affect the accuracy of the calculations. It's also essential to review the results carefully and consider other variables that may influence the final cost of the project.
Frequently asked questions
What is BDI and how does it work?
BDI is a formula that calculates the cost of extra materials in construction projects. It takes into account the quantity of materials needed and the unit cost of each item.
When should I use the BDI Calculator?
It should be used in construction projects that involve the installation of extra materials, such as floors, walls, ceilings, and equipment.
How can I ensure that the calculations are accurate?
By providing precise and complete data to the calculator and reviewing the results carefully.
What should I consider beyond the calculations of the BDI Calculator?
The costs of transportation and storage of materials, as well as other variables that may influence the final cost of the project.
Can I use the BDI Calculator for construction projects of different scales?
Yes, the BDI Calculator can be used for construction projects of different scales, as long as the data is provided with precision.