Tools tagged #home
Every ecech. tool tagged home: 45 free calculators and utilities across Home & Construction, Productivity & Units. No signup, runs in your browser.
AC BTU Sizing
Dehumidifying needs sustained runtime. A unit that is too big hits the temperature target and shuts off before it has dried the air.
Home🏠ACH Airflow
Convert a room's volume and target air-change rate into ideal volumetric airflow.
Home🏠Attic Ventilation
Exhaust vents draw air from somewhere. With the soffits blocked, the nearest supply is the heated house below.
Home🏠Battery Window Planner
Simulate an editable hourly battery policy without connecting to equipment.
Home🏠Carpet Seam Planner
Use roll width and room orientation instead of treating carpet like square-area flooring.
Home🏠Circuit Load Diversity
Model simultaneous demand from entered load groups without claiming electrical-code compliance.
Home🏠Concrete Calculator
A 10 by 10 slab at four inches is 1.24 cubic yards. In 80 lb bags that is 56 of them, which is where ready-mix starts to look sensible.
Home🏠Contractor Quote Compare
Level itemized bids without pretending the cheapest stated total is the best contract.
Home🏠Deck Boards
Pressure-treated lumber is sold wet and shrinks across the width. Boards laid tight open up to the right gap on their own.
Home🏠Deck Joist Hardware
Derive hardware quantities from explicit joist connections without making a structural design claim.
Home🏠Dehumidifier Removal Cost
Relate rated power, runtime and collected water to moisture-removal cost.
Home🏠Drywall Calculator
Sheet length decides how many butt joints you have to hide, and butt joints are the seams that still show two years later.
Home🏠Drywall Compound
Estimate finishing compound from measured seam length instead of floor area alone.
Home🏠EV Charging Loss
Reconcile electricity drawn at the wall with energy reported as added to the battery.
Home🏠Firewood Cord
A full cord is 128 cubic feet. A face cord is the same height and length, one log deep — and nobody checks the depth.
Home🏠Generator Sizing
Motors do not all start at the same instant. Summing every starting watt buys twice the machine; ignoring them trips the first time the pump kicks in.
Home🏠Grass Seed
Rates run from 0.5 to 8 lb per thousand square feet depending on the species, and overseeding is half of new seeding. One number cannot cover that.
Home🏠Gravel Calculator
A four inch compacted base needs about a quarter more material than its finished volume. Order the finished figure and you run out.
Home🏠Grout Calculator
Grout fills joints, and small tiles have far more joint per square foot. The floor size is the least important input.
Home🏠Insulation Calc
R-value comes from trapped air, so compressing a batt throws the extra away. R-19 in a 3.5 inch bay gives R-10.6, below the R-13 made for it.
Home🏠Load Schedule Validator
Recalculate VA totals, phase sums and user-entered demand factors while keeping code decisions outside the tool.
Home🏠Lumens Calculator
Watts stopped meaning brightness when LEDs arrived. The number that sizes a room is lumens per square foot, and it varies four to one.
Home🏠Multi-EV Charge Planner
Allocate hourly charging by deadline without exceeding a user-entered site cap.
Home🏠Paint Calculator
The first coat is partly absorbed and the second is not, so multiplying by the number of coats overestimates. This splits them.
Home🏠Paver Calculator
The pavers are the visible cost. The compacted base underneath is the bigger pile, the longer day, and the reason it stays flat.
Home🏠Rainwater Calc
Shingles cover the slope, but rain falls straight down. The catchment is the footprint, so a steep roof collects no more than a flat one.
Home🏠Renovation Timeline
Turn user-defined tasks and predecessors into an auditable critical-path draft.
Home🏠Retaining Wall
Round a wall layout to whole blocks and show the backfill volume separately.
Home🏠Running Cost
A thermostat means the compressor runs about a third of the time, so the usual watts-times-hours sum overstates the cost by roughly three times.
Home🏠Sheet Cut Optimizer
Build a reproducible first-fit cut plan with kerf, rotation and waste reporting.
Home🏠Shingle Calculator
A 1,600 sq ft footprint at 6/12 pitch is 1,789 sq ft of roof. At 12/12 it is 2,263. Measuring from the ground is only the first step.
Home🏠Solar Clipping Loss
Compare available AC-equivalent power with the inverter ceiling over an entered interval.
Home🏠Solar Export Credit
Separate self-consumed energy value from exported-energy credit.
Home🏠Solar Self-Consumption
Separate direct solar use, battery-supplied solar, export and grid import for one period.
Home🏠Solar Shading Loss
Apply monthly shade exposure and system recovery to an unshaded forecast.
Home🏠Stair Stringer
Solve a whole-number riser layout before marking a stringer board.
Home🏠Standby Power Cost
Scale a measured low-power mode across devices, hours, days and your own electricity price.
Home🏠Stud Calculator
Corners, T-intersections, kings, jacks and cripples are most of the difference between the formula and the pile of lumber you actually need.
Home🏠Three-Phase Energy
Convert line voltage, current and power factor into input power and running cost.
Home🏠Tile Calculator
Ten per cent is right for a straight layout and short for a diagonal. The same floor needs 132 or 138 square feet depending on the pattern.
Home🏠TOU Appliance Scheduler
Compare hourly starts while respecting run length, availability and a concurrency cap.
Home📏TV Size Compare
Screens are sold by diagonal and watched by area, and area grows with the square. The upgrade is always larger than the number implies.
Converters🏠Voltage Drop
A 20 amp circuit 100 feet away drops 6.6% on 12 AWG. Sizing by amps alone is how a long run ends up dim and a pump motor dies young.
Home🏠Wallpaper Rolls
Paper is hung in full-height drops, and every drop on a patterned paper is cut to a whole number of repeats. That is where the extra rolls come from.
Home🏠Water Heater Size
Only 70 per cent of a tank is usable, and recovery rate makes up the rest. First-hour rating is the number that decides whether you run out.
HomeRelated tags