## How would you like to add a new gazebo to your back yard?

Start with vCalc and use the polygon slab equation to compute the amount of concrete required for a gazebo foundation and order exactly the right amount of concrete.

> Let's Get Solving!## Steely Slab

Concrete can be much stronger with steel reinforcement bars (rebar). This calculator helps compute the amount of rebar needed for slabs and wall.

> Try Out This Calculator Now## Would you like to return less paint from your next project?

Use vCalc's estimation of paint required for a room project and make fewer trips to the hardware or paint store. And use the paint cost estimator to get an up-front estimate of the cost of the paint.

> Let's Get Solving!## Brick by brick

Skip extra trips buying materials by using vCalc's estimation formulas like this calculator for computing the how much concrete you'll need for a patio or the number of brick or block needed for a wall.

> Try Out This Calculator Now