📬 Contact Us
We'd love to hear from you! Whether you have feedback about our calculators, found a bug, or have a suggestion for a new calculator — drop us a message.
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Report a Bug
Found a wrong calculation? Email us with the calculator name and the values you entered. We'll fix it within 24 hours.
Suggest a Calculator
Have an idea for a calculator we should add? We currently have 582+ calculators and always adding more.
About CalcBuild
CalcBuild is a free collection of 582+ construction and building calculators. Our tools help contractors, DIY homeowners, and students estimate materials, costs, and dimensions for any building project. Every calculator includes a shopping list, step-by-step guide, and DIY vs Pro cost comparison.
We are based in India and our mission is to make construction planning accessible to everyone — completely free, no sign-up required.
Response Time
We typically respond to emails within 24-48 hours. For urgent calculator bugs, we aim to fix them the same day.