Construction Tools

What Size AC for Your City?

Pick your city and room size — the BTU number for the summer you actually have.

What Size Generator Do I Need?

Check what must stay running — get the wattage class and the right frame style.

Generator Fuel Calculator

Generator size, load and hours — the gasoline (and propane) you’ll actually burn.

What Size Space Heater?

Square footage, insulation and real winter — the wattage that heats it, within outlet limits.

What Size Humidifier?

Space, ceilings and how tight the house is — the gallons-per-day rating to shop for.

How Many Lumens?

Room type × square footage = the lumen count (and bulb count) to buy.

What Size Water Softener?

People, hardness grains and iron — the tank capacity that regenerates about weekly.

How Much Yarn Do I Need?

Project + size + yarn weight → yards, meters and the exact skein count.

How Many Christmas Lights Do I Need?

Tree height, density and roofline — bulb counts, strands, clips and the watts behind it all.

Lumber Board-Feet Calculator

Dimensions × quantity = board feet, cost and the buy list.

How Many Bags of Concrete?

Slab dimensions → cubic yards → exact 80 lb bag count.

What Wattage PSU Do I Need?

GPU + CPU + the rest → the exact PSU class with real headroom.

How Much Paint Do I Need?

Room, coats and color — the exact gallon count plus the roller kit.

What Size TV Do I Need?

Couch distance + what you watch — the screen size that actually fits.

Tile Calculator

Area, tile size and waste pattern — boxes, sheets, thin-set and grout, all at once.

Attic Insulation Calculator

Climate zone minus what’s up there now — inches and bags of blown-in to add.

Candle Wax Calculator

Jars + blend = wax by weight, fragrance oil and wick count.

Flooring Box Calculator

Square footage + waste = exact boxes and underlayment.

Blinds Size Calculator

Inside or outside mount — measure once, order right.

Curtain Size & Panel Calculator

Width × length × fullness — the 2× rule people skip.

What Mesh Wi-Fi System Do I Need?

Coverage math that counts your walls, not just square feet.

What Size Bathroom Fan (CFM)?

Eight air changes an hour — sized for your actual bathroom.

What Size Garage Heater (BTU)?

Cold-shop math: insulated walls vs drafty door, done right.

Drywall Sheet Calculator

Sheets, screws, tape and mud for a room — openings deducted.

Moving Box Calculator

Box count by home size — and how long you’ve been settling in.