Free contractor tools

Construction calculations, made clear.

Plan material quantities for drywall, framing, insulation, finishing, paint and ceiling grid. Enter your field measurements and get a practical takeoff in seconds—no account or pricing information required.

Open calculators Measurement guide
AE FIELD TOOLS / 01 6

purpose-built material calculators

  • Live results
  • Editable waste allowances
  • Straight, rake, gable & custom walls
  • Copyable takeoff summaries
Choose a calculator

Free construction calculators

All measurements are imperial. Results update as you type and always round order quantities up to the next whole piece.

Drywall calculator

Drywall sheet calculator

Estimate board area, sheet count and fasteners for walls and ceilings. Openings are deducted before waste is applied.

Project measurements

Board layout

Measurement noteFor different wall heights, calculate each height group separately and add the results. Confirm board orientation and fire-rated assembly requirements before ordering.
Measure once. Calculate clearly.

How to get an accurate material takeoff

A calculator is only as accurate as the measurements entered. Use finished dimensions from the drawings when available, then verify them on site.

01

Measure each condition

Separate walls by height, assembly and material. Measure perimeter in linear feet, height in feet, and doors or windows as width × height.

02

Use actual product coverage

Sheet size, bag coverage, pail weight and paint spread rate differ by product. Replace the defaults with the values printed by the manufacturer.

03

Choose a realistic waste factor

Simple open rooms may need less waste. Small pieces, angled cuts, complex layouts, damage risk and limited reuse typically require more.

04

Round ordering quantities up

Sheets, bags, pails, studs and grid pieces are sold as whole units. These calculators round purchase quantities up so partial units are never ordered.

Wall arealength × height × sides
Net areagross area − openings
Order areanet area × (1 + waste %)
Piece countorder area ÷ unit coverage, rounded up
Built for real projects

One calculator for drywall, carpentry and finishing.

The AE construction calculator brings the core takeoff tools used in our own workflow into one simple page. Use the drywall calculator to turn wall and ceiling measurements into sheet quantities, the carpentry calculator to lay out straight or sloped framing, and the finishing calculators to estimate the materials that follow.

The advanced wall framing tool accounts for wall shape, on-centre spacing, end studs, rough openings, headers, sills, blocking, cut deductions and waste. For rake, gable and custom multi-point walls it also calculates every top slope and individual full-height stud cut.

Common questions

Calculator FAQ

How do I calculate how many drywall sheets I need?

Multiply total wall length by wall height and the number of boarded sides. Add ceiling area, subtract doors and windows, add waste, then divide by the square-foot area of one sheet. The drywall calculator performs each step and rounds sheets up.

Can I calculate a rake, gable or custom wall?

Yes. Choose Rake for one sloped top, Gable for a peak, or Custom to add up to 12 profile points. The result includes every slope angle, wall area, stud length and material quantity.

What waste percentage should I use?

Use the project layout and material as your guide. The defaults are practical starting points, but simple layouts may use less while many angled cuts, short rooms or fragile finishes may use more.

Do these results replace plans or code requirements?

No. The arithmetic follows your inputs, but structural sizes, fire ratings, fastener schedules, product limitations, building code and field conditions must still be confirmed before work or ordering.

Need the work completed?

Bring the estimate to life.

AE Carpentry provides framing, drywall, taping, painting and demolition in London, Ontario and surrounding areas.

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