DIY & Home Calculators
Free diy tools for every need. All calculations happen in your browser. No signup, no tracking.
Baseboard Trim Calculator: How Much to Buy
Calculate how much baseboard trim you need: enter wall lengths, pick 8, 12, or 16 ft pieces, add a waste factor, and get the buy list. Free, no signup.
Beam Load Calculator: Span & Load Capacity for Beams
Estimate beam size and load capacity for simple span beams. Calculate maximum bending moment, shear force, and deflection for uniformly distributed loads.
Board Feet Calculator: Lumber Volume and Cost
Calculate board feet for any lumber size: enter thickness, width, length, and quantity to get total board feet and the cost at your price per board foot.
Brick Wall Calculator: Bricks, Mortar & Materials
Calculate number of bricks, mortar bags, and sand needed for a brick wall project. Supports standard, modular, and queen size bricks.
Concrete Bag Calculator: Bags, Water and Cost Estimate
Calculate how many 60 or 80 lb bags of concrete mix you need for a slab, footing, or post hole. Includes waste, water estimate, and weight. Free.
Concrete Footing Calculator: Deck Post & Foundation Footing
Calculate concrete volume for round or square footings. Find how many bags of concrete mix you need for deck footings, fence posts, and column foundations.
Concrete Slab Calculator: Cubic Yards & Bags
Calculate concrete for a slab: enter length, width, and thickness to get cubic yards, cubic feet, and the number of 60lb or 80lb bags needed. Free.
Deck Baluster Spacing Calculator: Even Gaps, Code Compliant
Space deck balusters evenly so no gap exceeds 4 inches. Enter railing length and baluster width to get the baluster count and exact even spacing.
Deck Stain Calculator: Gallons Needed for Deck Staining
Calculate how many gallons of stain or sealer you need for your deck, fence, or wood surface. Accounts for surface type, wood age, and number of coats.
Decking Calculator: Boards, Fasteners & Materials
Calculate deck boards, joist hangers, fasteners, and material cost for your deck project. Supports 90° and 45° diagonal layouts with waste factor.
Drywall Calculator: Sheets, Joint Compound & Screws
Calculate drywall sheets needed for walls and ceilings, plus joint compound, drywall tape, and screws. Enter room dimensions for a complete materials list.
Drywall Mud and Tape Calculator: Compound, Tape and Screws
Estimate joint compound, drywall tape, and screws. Enter square footage to get gallons, buckets, tape rolls, and screw count. Free, no signup.
Epoxy Resin Calculator: Gallons, Resin and Hardener Parts
Calculate epoxy resin for river tables, coatings, and deep pours. Enter dimensions and mix ratio to get total gallons plus resin and hardener parts. Free.
Fence Calculator: Posts, Panels & Material Estimator
Calculate fence posts, pickets, rails, and concrete needed for your fence project. Works for wood, vinyl, and chain-link fencing.
Firewood Cord Calculator: Cords and BTU Estimate
Measure your firewood stack and convert it to full cords, face cords, and estimated heat output (BTU) for oak, maple, and pine. Free, no signup.
Flooring Calculator: Sq Ft & Boxes Needed
Calculate square footage for hardwood, laminate, vinyl plank, or carpet. Get box count, cost estimate, and material with waste factor included. Free.
Garden Soil Calculator: Cubic Yards & Bags
Calculate how much garden soil, topsoil, or raised bed mix you need in cubic yards, cubic feet, or bags. Supports multiple raised beds and garden areas.
Grass Seed and Fertilizer Calculator for Your Lawn
Figure out how much grass seed and fertilizer your lawn needs. Covers tall fescue, bluegrass, and rye for new lawns and overseeding, plus N-P-K rates.
Gravel Calculator: Cubic Yards, Cubic Feet and Tons
Calculate gravel for driveways, paths, and landscaping. Enter length, width, and depth to get cubic yards, cubic feet, and tons by gravel type. Free.
Grout Calculator: How Much Grout Do I Need?
Calculate how much grout you need for tile installation. Enter tile size, joint width, and area to get bags of grout needed for any project.
Gutter and Downspout Size Calculator for Your Roof
Size gutters and downspouts: enter roof area and rainfall intensity to get required capacity, gutter size, and downspout count. Free, no signup.
Insulation Calculator: Bags, Batts and Target R-Value
Find how much insulation to add to your attic or floor. Enter area, current R-value, and climate zone for target R-value, bags, and depth. Free.
Joist Spacing Calculator: Floor & Deck Joist Span Calculator
Calculate joists, spacing, and materials for floor or deck framing. Supports 12, 16, and 24 inch on-center spacing with common joist sizes. Free.
Mulch Calculator: Cubic Yards & Bags of Mulch
Calculate how much mulch you need in cubic yards or bags for garden beds, flower beds, and landscaping. Enter area and depth to get exact amounts.
Paint Calculator: How Much Paint Do I Need?
Calculate how many gallons of paint you need for walls, ceilings, or rooms. Enter room dimensions and get gallons needed with or without windows and doors.
Paver Calculator: Pavers Needed for Patio or Path
Calculate how many pavers you need for a patio, walkway, or driveway. Enter area and paver dimensions for total count, sand base, and cost estimate.
Recessed Lighting Layout: Spacing and Rows Guide
Plan a recessed can light layout for any room. Enter room size and ceiling height to get the number of lights, rows, columns, and exact spacing from walls.
Retaining Wall Block Calculator
Calculate retaining wall blocks, cap stones, gravel base, and drainage pipe. Enter wall length and height, pick block size, get exact quantities. Free.
Roof Pitch Calculator: Angle, Slope, and Rise
Calculate roof pitch in X/12 format and angle in degrees. Enter rise and run to get pitch, rafter length per foot, and the shingle area multiplier. Free.
Roofing Calculator: Squares, Shingles & Materials
Calculate roofing squares, number of shingles bundles, underlayment, and nails needed for a roof replacement or new construction. Includes pitch factor.
Room BTU Calculator: AC and Heater Sizing
Calculate the right air conditioner size for any room. Enter dimensions, sun exposure, and insulation to get required cooling in BTU and tons. Free.
Siding Calculator: Squares, Pieces & Cost Estimate
Calculate how much siding material you need for your home exterior. Supports vinyl, wood lap, fiber cement, and T1-11 siding with waste factor.
Sod Calculator: Rolls and Pallets for Your Lawn
Calculate how much sod you need for your lawn. Enter lawn dimensions and shape, add waste, and get the exact number of rolls and pallets to order. Free.
Stair Stringer Calculator: Rise, Run, Layout
Calculate stair stringer layout: steps, riser height, tread run, total run, stringer length, and stair angle. Flags IRC code violations. Free.
Tile Calculator: How Many Tiles Do I Need?
Calculate how many tiles you need for a floor or wall. Enter room dimensions and tile size to get tile count, boxes, and square footage with waste. Free.
Vinyl Plank Flooring Calculator
Calculate how many boxes of vinyl plank flooring you need. Enter room size, plank dimensions, and waste factor to get box count and underlayment. Free.
Wall Stud Calculator: How Many Studs Do I Need?
Calculate the number of wall studs needed for framing. Enter wall length and stud spacing to get stud count for 16" or 24" OC framing.
Wallpaper Rolls Calculator (with Pattern Repeat)
Find exactly how many wallpaper rolls your room needs, accounting for pattern repeat and waste. Includes a safety roll. Free, no signup.
Wire Gauge Calculator: AWG Size and Ampacity
Find the correct AWG wire size for a circuit. Enter amps, length, and voltage to meet ampacity and voltage drop limits (NEC). Planning use only. Free.