All Drywalls Calculator calculators

Pick the question you are trying to answer. Each calculator shows its formula, lists its assumptions and prints the arithmetic so you can check the result.

Drywall sheets

How many sheets a room, a ceiling, a basement or a garage takes, which size to buy, and where moisture-resistant or fire-rated board belongs.

  • Drywall Sheet Calculator

    Sheets for the walls and ceiling of a room from its dimensions, openings, sheet size and waste, with the screws and compound to go with them.

  • Ceiling Drywall Calculator

    Sheets for a ceiling from its length and width, with the thickness your joist spacing needs and the sheet direction.

  • Single Wall Drywall Calculator

    Sheets, joints and butt joints for one wall, hung horizontally or vertically, with its openings taken out.

  • Basement Drywall Calculator

    Sheets for up to six basement rooms at once, walls and ceilings, with a per-room breakdown and one shopping list.

  • Garage Drywall Calculator

    Sheets for a garage by type: 5/8 in type X where the fire-separation rules require it and regular board elsewhere.

  • Sheet Size Optimizer

    Every sheet length on one wall: sheets, butt joints, feet of joint and waste for each, and which one to buy.

  • Moisture-Resistant Board Calculator

    Moisture-resistant board for a bathroom, kitchen or laundry, with the tub and shower area taken out for cement board.

  • Fire-Rated Drywall Calculator

    Sheets of 5/8 in type X per layer and per side for a one- or two-hour wall or ceiling, with the screws for each layer.

  • Curved Wall Drywall Calculator

    Board for a curved wall from its radius and angle: layers of 1/4 in or flexible board, the bending limits, stud spacing and screws.

Screws, nails & adhesive

Screws and nails by sheet and spacing, adhesive tubes, furring strips and what an anchor will hold.

  • Drywall Screw Calculator

    Screws per sheet from the Gypsum Association pattern for your framing, walls or ceilings, with or without adhesive, in pounds and boxes.

  • Drywall Nail Calculator

    Nails per sheet at the 7 in ceiling and 8 in wall spacing, single or double nailing, with the length for your board and the pounds to buy.

  • Drywall Adhesive Calculator

    Tubes of drywall adhesive from the bead on every stud under each sheet, and how many screws the adhesive saves.

  • Screw Spacing Pattern Calculator

    The screw pattern on one sheet drawn to scale: rows on each framing member, screws per row and the total for a room.

  • Furring Strip Calculator

    Furring strips for a ceiling or a masonry wall: rows at your spacing, pieces to buy, linear feet and the fasteners to hold them.

  • Drywall Anchor Weight Calculator

    Whether an anchor in drywall will hold a shelf, mirror or TV: the working load of each anchor type, how many you need, and when to find a stud.

Mud, tape & corners

Compound by finish level, tape rolls, corner bead, skim coats, textures, sanding and mixing ratios.

  • Joint Compound Calculator

    Pails or bags of joint compound by finish level and compound type, pass by pass, from the sheets or the area of board.

  • Drywall Tape Calculator

    Feet of joint and rolls of paper or mesh tape from the sheets you hang and the inside corners of the room.

  • Corner Bead Calculator

    Pieces of metal, vinyl or paper-faced corner bead for outside corners, window returns and soffit edges, with the fasteners.

  • Finish Level Planner

    What a finish level from 0 to 5 involves for your walls: the passes, the compound, the days, and whether it suits your paint and light.

  • Skim Coat Calculator

    Compound for a skim coat from the area, the job (a Level 5 film or covering old texture) and the coats, in pails or cartons.

  • Drywall Texture Calculator

    Bags or boxes of orange peel, knockdown, popcorn or hand texture for a ceiling or walls, light to heavy.

  • Sanding Sheets & Screens Calculator

    Sanding screens, sheets, sponges or discs for the finish level and compound, the grits, and the masks to go with them.

  • Setting Compound Mixing Calculator

    Water for a batch of setting-type joint compound, its working and set time, and how many bags and batches a job takes.

Studs & framing

Studs, plates and blocking, metal framing, resilient channel, whole partition walls, rough openings and soffits.

Soundproofing & fire

STC estimates for wall and ceiling assemblies, Green Glue, mass-loaded vinyl, acoustic insulation, fire-rated layers and isolation clips.

Measuring & waste

Wall and ceiling areas, waste factors, sheet weights, thickness and orientation choices, vaulted ceilings and patch sizing.

Cost & hiring

Materials, hang-and-finish labour by level, removal, textures, repairs, DIY vs pro, time and whole-house budgets, with sourced ranges.

Planning & drying

Drying time by conditions, a project schedule with real dates, finish level choice, dumpster size, drywall vs plaster, and delivery and lift planning.

  • Joint Compound Drying Time Calculator

    How long a coat of joint compound takes to dry at your temperature and humidity, by coat thickness and airflow, or when setting compound can be recoated.

  • Drywall Project Schedule

    Dates for every stage from a start date: hanging, each finishing pass after it dries, sanding, priming and the day it is ready for paint.

  • Finish Level Selector

    The drywall finish level a room needs from its use, paint sheen, texture and lighting, with what it costs against the others.

  • Drywall Dumpster Size Calculator

    The dumpster size for a drywall or plaster tear-out or for offcuts, by weight and volume, whichever limits first.

  • Drywall vs Plaster Cost Comparison

    Drywall finished to Level 4 or 5 against veneer plaster over blueboard: the cost of each, the difference and the finishing time.

  • Delivery Trips & Lift Rental Planner

    Whether to collect the board or have it delivered, the trips your vehicle needs, and the panel lift days for the ceilings.