Free calculators

Calculators for the numbers that decide a job

Pricing arithmetic and material quantities, with the reasoning behind each one written up alongside it. Nothing to sign up for.

Enter a cost and either number. It converts between the two and shows what you actually keep.

What an hour of that employee actually costs you, once taxes, insurance, and unproductive hours are in the number.

What percentage you need on every job to cover the cost of existing, and what happens to that number in a slow year.

Cubic yards for a slab or footing, with waste, and the bag count if you are mixing it yourself.

Gallons for a given area and coat count, rounded to what you can actually buy.

Footprint area corrected for pitch, converted to squares, with waste. The correction is where roof quotes go wrong.