FREE DIY CALCULATORS
Practical project calculators built for real DIY work. Estimate materials before you buy, print your results, and come back as we add more calculators to the library.
CHOOSE A CALCULATOR
Wood Privacy Fence Material Calculator
Estimate fence posts, rails, pickets, concrete, fasteners, and basic gate hardware for a 6-ft or 8-ft wood privacy fence.
Post-Hole Concrete Calculator
Choose fence, deck, or structural post type, enter hole depth and quantity, and calculate the recommended auger size and concrete bags.
Bagged Slab Concrete Calculator
Enter exact slab or pad dimensions, choose the bagged concrete mix, and calculate concrete volume and the number of bags to buy.
Drywall Material Calculator
Compare horizontal and vertical drywall layouts, test 4×8, 4×10, and 4×12 sheets, and estimate sheets and screws for one rectangular room.
More calculators are coming. This page will remain the main calculator library as new project tools are added.