Free tools

Home repair calculators

Small tools for the questions that come up before and during a repair: is it worth doing yourself, what will it cost, how much do I need to buy, and is something leaking. They run on the same numbers as our guides.

20free tools

110repairs in the data

0sign-ups needed

Not sure where to start? Describe the problem or weigh DIY against a pro.

Hands writing measurements on a notepad on a workbench with a tape measure, paint chips and caulk

What's going on?Start from the symptom; get the likely causes in order.My house trackerWhat's due, what's done, and what your house doesn't need.Repair or replace?Water heater, furnace, AC and appliances, weighed honestly.What can I fix?Tick the tools you own and see every repair you can do today.Fix it or call a pro?DIY cost, tools and time against what a pro typically charges, for 110 repairs.Weekend project plannerPick jobs; get total time, one shopping list and the best order.Hidden water leak testTwo meter readings tell you if water is escaping, and what it costs.Air filter scheduleHow often your filter needs changing, with calendar reminders.Leak cost calculatorWhat a drip or a running toilet wastes in gallons and dollars.Room materials calculatorPaint, flooring, baseboard and drywall from one set of measurements.Square footage calculatorRoom and floor area in feet and inches, with sq yd and sq m.Concrete calculatorBags of 80, 60 or 40 lb mix for a slab or post holes.Room AC size calculatorHow many BTU a window or portable AC needs for a room.Fence calculatorPosts, rails and pickets for a wood fence, with gates.Paint calculatorGallons for a room, with doors, windows and coats.Caulk calculatorHow many tubes for a tub, windows or trim.Drywall calculatorSheets for walls and ceiling, plus mud, tape and screws.Tile calculatorTiles and boxes for a floor or wall, plus grout.Flooring calculatorBoxes of laminate, vinyl plank or hardwood, with waste.Mulch calculatorCubic yards or bags of mulch, soil or gravel for a bed.Deck stain calculatorGallons of stain for the deck floor, railings and steps.Attic insulation calculatorInches and bags of blown-in insulation to reach your R-value.Wallpaper calculatorDouble rolls for a room, with the pattern repeat.Home info sheetShutoffs, numbers and filter sizes on one printable page.What's that noise?Chirps, drips, bangs and hums, and what causes them.

Which tool do I need?

Something's wrong and you're not sure whatWhat's going on? →
You know the problem and wonder if it's worth doing yourselfFix it or call a pro? →
A repair quote came in for something oldRepair or replace? →
You have a list of small jobs and one weekendWeekend project planner →
The water bill jumped for no reasonHidden water leak test →
You want to stay ahead of upkeepMy house tracker →
You're buying paint or caulkPaint calculator →
You're buying drywall, tile or flooringDrywall calculator →
The attic feels thin on insulationAttic insulation calculator →
You're ordering mulch or deck stainMulch calculator →
You want the shutoffs and numbers written downHome info sheet →

Calculator questions

Are these calculators free?

Yes. All 25 tools are free, with no sign-up and no account.

Is anything I type sent anywhere?

No. Every tool runs in your browser. The one exception is a ZIP code you enter for a weather forecast in the weekend planner.

How accurate are the estimates?

They are planning numbers, not quotes. Paint, caulk, flooring, insulation and leak math uses published product figures, so check the label on what you buy and expect real prices to vary by area.

Every tool runs in your browser and uses the same time, cost and safety notes as our guides. Nothing you type is sent to us, except a ZIP code when you ask for a forecast.