Home Calculators
Free, verified home calculators with step-by-step guides and reference data.
Fence Post Depth Calculator — Hole Depth & Diameter
Find the right fence post hole depth using the 1/3-length rule, your frost line, and the 12 in IBC minimum — plus hole diameter and concrete volume.
Concrete Bag Calculator — How Many Bags Do I Need?
Calculate how many 40, 60, or 80 lb bags of concrete you need for a slab, footing, or post — plus total weight and cost estimate.
Electricity Cost Calculator — What Does It Cost to Run?
Calculate the daily, monthly, and annual cost to run any appliance from its wattage, hours used, and electricity rate. Add devices for a household total.
Flooring Installation Cost Calculator — Laminate, Carpet, Rug Pad
Estimate laminate, carpet, and rug pad installation costs by room size and material tier, including the sq ft to sq yd carpet conversion.
Insulation Calculator — Attic R-Value & Blown-In Cost
Find your recommended attic R-value by climate zone, then calculate blown-in insulation depth and installed cost for fiberglass or cellulose.
Window Replacement Cost Calculator — By Material
Estimate window replacement cost by material (vinyl, wood, fiberglass) and insert vs. full-frame installation, with a low-high price range for your project.
Asphalt Driveway Cost Calculator — Install & Resurface
Estimate asphalt driveway cost by size, project type, and thickness. Compare new installation vs resurface/overlay pricing with a low-high range.
Furnace Size Calculator — BTU & AC Tonnage Estimator
Estimate furnace BTU/hr and AC tonnage from square footage, climate zone, and insulation quality — a rough pre-Manual J sizing check, not a replacement for one.
Tree Removal Cost Calculator: 2026 Price Estimate
Estimate tree removal cost by height, plus stump removal, difficult-access, and emergency premiums. 2026 US pricing ranges for budgeting.
Board and Batten Calculator — Spacing & Materials
Calculate how many battens you need, exact spacing, and total linear feet of material for a board and batten wall — plus a paint estimate.
Plywood Calculator — Sheets Needed & Cost
Calculate how many plywood sheets you need by area, sheet size, and waste factor — plus cost estimate and a simple layout suggestion.
Tire Pressure Calculator — Temperature Adjuster & Guide
Adjust tire PSI for temperature swings and get vehicle-specific guidance on finding your correct cold tire pressure spec.
Landscaping Gravel Calculator — Tons & Cost
Calculate how many tons of gravel you need for a driveway, walkway, or garden bed by area, depth, and material — plus cost estimate.
Pool Volume Calculator — Gallons for Any Shape
Calculate your swimming pool's volume in gallons and liters for rectangular, round, or oval pools, including sloped-bottom depth averaging.
Cinder Block Calculator
Calculate how many cinder blocks you need for a wall. Cinder blocks are the same as concrete masonry units (CMU) — this calculator covers all standard sizes.
Concrete Block Calculator (CMU & Cinder Block)
Calculate blocks needed for any wall — includes mortar bags, courses, door/window openings, waste factor, and cost. Works for CMU and cinder blocks.
House Repiping Cost Calculator: PEX vs Copper vs CPVC 2026
Estimate house repiping cost by square footage, pipe material, and bathroom count. Compare PEX vs copper vs CPVC with 2026 labor and material rates.
Drapery Yardage Calculator: Pinch Pleat, Ripplefold & Stack Back
Calculate drapery yardage for pinch pleat, ripplefold, French pleat, wave, and flat styles. Includes stack back calculation. Works in yards and metres.
Roman Blind Calculator: Fabric, Folds & Rods
Calculate fabric, fold count, and rods for flat and cascade roman blinds. Covers inside and outside mount, lining, and works in cm and inches.
Curtain Fabric Calculator: Yardage for Every Heading Style
Calculate curtain fabric yardage for eyelet, pencil pleat, pinch pleat, and wave curtains. Enter window width, drop, and lining type for exact fabric needed.
Cushion Fabric Calculator: Box, Knife-Edge & Round Cushions
Calculate fabric for box, knife-edge, and round cushions. Covers sofa, chair, bench, and outdoor pads with seam allowances, piping, and multiple quantities.