Home & Garden Calculators
Paint, wallpaper, lighting, AC size, garden soil and DIY project calculators.
Paint coverage, wallpaper rolls, AC sizing, soil volumes — the DIY estimates that get expensive when guessed. Each calculator uses standard coverage rates (and says what they are), shows the area math, and tells you when to add the professional buffer.
Room Area & Flooring Calculator
Calculate room area and flooring materials needed
Wallpaper Rolls Needed Calculator
Calculate wallpaper rolls required for a room
Fence Material Calculator
Calculate fence posts, rails, and pickets needed
Deck Stain & Sealant Calculator
Calculate deck stain or sealant needed
Curtain Length & Fabric Calculator
Calculate curtain panel length and fabric yardage
Rug Size & Room Fit Calculator
Find the right rug size for any room
Room Lighting Needs Calculator
Calculate lumens and bulbs needed for a room
Paint Cost Estimator
Estimate total paint cost for a room or house
AC/BTU Size Calculator
Calculate the right AC BTU size for a room
Water Heater Size Calculator
Find the right water heater size for your home
Generator Size Calculator
Calculate generator wattage needed for your home
Garden Soil & Mulch Calculator
Calculate soil, mulch, or compost needed for garden beds
Plant Spacing & Quantity Calculator
Calculate plants needed for a garden bed with proper spacing
Grass Seed Calculator
Calculate grass seed needed for lawn overseeding or new lawn
Fertilizer Application Calculator
Calculate fertilizer amount for your lawn or garden
Compost Bin Size Calculator
Find the right compost bin size for your household
Rain Barrel / Rainwater Harvesting Calculator
Calculate rainwater collection from your roof
Garden Irrigation Flow Rate Calculator
Calculate drip irrigation or sprinkler flow rate needed
Pool Water Volume Calculator
Calculate pool water volume in gallons
Pool Chemical Balance Calculator
Calculate pool chemical dosages to balance water
Furniture Room Layout Calculator
Plan furniture arrangement and spacing in a room
TV Mount Height Calculator
Find the ideal TV mounting height for your room
Staircase Dimensions Calculator
Calculate staircase rise, run, and stringer length
Countertop Square Footage Calculator
Calculate countertop area for kitchen or bathroom
Closet Organizer Size Calculator
Plan closet shelving, hanging space, and storage
Cabinet & Drawer Size Calculator
Calculate cabinet door and drawer dimensions
Tile Grout & Mortar Calculator
Calculate grout and thin-set mortar needed for tiling
LED Bulb Savings Calculator
Calculate savings from switching to LED bulbs
Home Square Footage Calculator
Calculate total square footage of a house or apartment
Kitchen Remodel Budget Calculator
Plan your kitchen remodel budget across all categories
Roof Area Calculator
Estimate roof square footage and shingle quantity
Vinyl / Laminate Flooring Calculator
Calculate vinyl plank or laminate flooring needed
Solar Panel System Size Calculator
Calculate solar panel system size and savings
Solar Battery / Home Battery Calculator
Calculate home battery needs for solar energy storage
Home EV Charger Installation Cost
Calculate the cost to install an EV charger at home
Raised Bed Soil Calculator
Soil volume for a raised garden bed
Garden Fence Calculator
Fencing for a garden perimeter
Lawn Watering Calculator
Water needed for your lawn
Sprinkler Head Count
How many sprinkler heads you need
Compost Bin Calculator
Compost bin size for your yard waste
Firepit Size Calculator
Firepit ring size and stone count
Deck Post Spacing
Deck joist and post layout
Porch Light Size
Recommended porch light size
Ceiling Fan Size Calculator
Right ceiling fan size for a room
Humidifier Size Calculator
Humidifier capacity for a room
Tree Spacing Calculator
How many trees fit in an area
Tile Grout Calculator
Grout needed for a tiled area
Appliance Running Cost Calculator
Electricity cost of a single appliance