All Construction Calculators by Trade & Category | Toolsish

Calculator directory

All Construction Calculators, Sorted by Trade

Whatever you are building, the right numbers are one click away. Pick a trade below and every calculator in it opens free, in your browser, with imperial and metric units, waste buffers and copy-ready results — no account, no install, nothing to sign up for.

Browse the categories

100%free foreverno sign-ups, no paywalls

2unit systemsimperial & metric

0accounts neededruns in your browser

1-clickcopy & shareorder-ready results

Browse calculators by category

Every Toolsish calculator is grouped by trade so you never hunt through a mixed-up list. Concrete and masonry tools turn dimensions into cubic yards, bags and delivered cost. Framing and lumber tools count studs, joists, rafters and board feet. Roofing tools measure area and pitch; flooring and tile tools work out sheets, boxes and grout. Drywall and paint tools cover boards, compound and coverage. Landscape tools handle gravel, sand, topsoil, mulch and sod; deck and fence tools size posts, boards and fasteners. Cost tools translate quantities into budgets, and the electrical, HVAC, plumbing and septic tools size loads, pipes, slopes and tanks. Open a category to see every calculator inside it.

Concrete & Masonry Framing & Lumber Roofing Flooring & Tile Drywall & Paint Landscaping & Hardscape Decks & Fences Cost & Estimating Electrical HVAC Plumbing & Drainage Septic Systems

From a category to a confident material order

The same simple workflow applies to every tool in the directory — no construction experience needed.

Pick your trade

Start from the category that matches the job in front of you. Each category page lists its own calculators with a one-line summary, so you can tell a footing calculator from a slab calculator before you open anything.

one directory, every trade

Measure once, type once

Take a single set of measurements and enter them the way the boxes ask — feet and inches or metres and centimetres. Every calculator shows the formula it used, so the number on the screen is never a mystery.

imperial & metric side by side

Order with the waste buffer on

Results arrive with the usual waste allowance already applied and a one-click copy button. Paste the summary into a message to your supplier, your crew or your budget — the order quantity and the net quantity are both in there.

copy-ready material orders

What every calculator in the directory shares

Different trades, same rules — so a number from any Toolsish tool can be trusted the same way.

Waste before rounding

Cut lists, pours and deliveries all lose a little material to spillage, off-cuts and uneven ground. The calculators apply a waste factor first and round second, so the number you order is the number you finish with — not a hopeful guess that runs short in the last corner.

Formulas you can audit

Each tool prints the formula it used in plain language next to the result. Working the same number out on paper should land within a rounding step of the screen; that is the point. If the ground truth and the calculator disagree, you will know why before you spend anything.

Cost lines that stay honest

Price boxes start empty on purpose. Until you type your own local price per yard, per sheet or per hour, the cost line reads zero — the calculator will never invent a quote for you. Use the cost and estimating category when you want to turn quantities into a full budget.

Good to know

1 cubic yard = 27 cubic feet

Waste factors are built in, not bolted on

Every result copies with one click

Nothing you type leaves your browser

Works on a phone, tablet or desktop

Popular calculators

Straight links to the tools most projects reach for first — or open a category above to see everything in a trade.

Concrete Calculator Square Footage Calculator Roofing Calculator Tile Calculator Drywall Calculator Gravel Calculator Deck Calculator Paint Calculator Electrical Load Calculator HVAC Load Calculator

Calculator directory — frequently asked questions

What kinds of construction calculators are on Toolsish?

Toolsish covers the everyday estimating jobs on a building project: concrete and masonry, framing and lumber, roofing, flooring and tile, drywall and paint, landscaping and hardscape, decks and fences, project cost and material waste, plus electrical, HVAC, plumbing and septic system sizing. Each trade has its own category page listing every calculator inside it.

Do the calculators cost anything to use?

No. Every calculator on Toolsish is free, with no sign-up, no paywall and no result limits. The price boxes inside cost-sensitive tools are for your own numbers — the site never charges for the math.

Can I enter feet and inches, or metres and centimetres?

Both. Switch the unit toggle at the top of any calculator and the boxes expect the units you actually measured in — lengths in feet or metres, thicknesses in inches or centimetres. The results print in the matching system, with cross-conversions shown underneath.

How do I choose the right calculator for my job?

Start from the trade on this page and open its category. The category page explains what each tool counts — for example, a slab calculator for flatwork, a footing calculator for foundations and a block calculator for walls — so you can pick by shape, not by guesswork. The search on the home page also jumps straight to a tool by name.

Are the results ready to take to a supplier?

Yes. Every result includes the waste allowance in the order quantity and separates it from the net quantity, so a quote request reads cleanly. Use the copy button to grab the whole summary, and add your local price where the tool offers a cost line.

Do the calculators work on a phone?

They run entirely in the browser, so any modern phone, tablet or desktop works — nothing to install and no app. Your measurements stay on your device; nothing you type is uploaded anywhere.

Know the trade, need the number?

Open the category, pick the calculator and type your measurements — the result is ready in seconds.

Browse by category