Free Contractor Calculators

Pull up a phone calculator on a job site and you spend more time fighting the interface than doing the math. Reference books are great until you need one out on the jobsite. We built these tools because we run the same calculations ourselves.

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Some of them are bid tools. Base materials, aggregate tonnage, soil volumes, haul counts.  Quickly double check your own calculations.

 

A lot of these you use after the job starts. Pipe slope and invert on a drainage install. Grade conversions when your plans show ratio and your equipment wants percent. Feet-inch-fraction arithmetic for when your civil plans and tape measure are in conflicting different units. These are the numbers you need to keep work moving ahead. 

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Every tool runs on standard formulas and published density values from the Caterpillar Performance Handbook. Results you can copy, print, or save with your project files.

 

No account to create. No subscription. We are still adding to this list, so check back.