About Free Construction Calculators
Free Construction Calculators is a collection of free, fast calculators for estimating building and landscaping materials. It is built and maintained by Tecksmiths, a digital studio that develops web tools and automation for businesses.
Why we built it
Most material estimates go wrong in the same few places: mixing inches and feet, forgetting to convert cubic feet to cubic yards, or ordering without any allowance for waste. We wanted calculators that handle those steps automatically, show results in the units suppliers actually sell, and explain the math in plain language.
How our calculators are made
- Standard formulas. Every tool uses the standard geometric formulas shown on its page, so you can verify any result by hand.
- Published assumptions. Where an estimate depends on a typical value — such as the yield of an 80 lb concrete bag or the weight of a cubic yard of gravel — we state the figure we use and let you override it where it varies.
- Tested. Calculations are checked against hand-worked examples before a tool is published, and pages are reviewed and updated when we find better data.
Important note
Our results are estimates for planning and ordering. They are not engineering, structural or code advice. For structural work, always follow your local building code and the guidance of a qualified professional. See our disclaimer for details.
Contact
Questions, corrections or ideas for new calculators are welcome — get in touch or email contact@freeconstructioncalculators.com.