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Drywall screws Calculator

Estimate screws from your sheet count and fixing schedule.

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How to use this calculator

Your measurements

Enter your project values to update the estimate.

Item name (optional)

View your estimate

Enter fixings per sheet from the installation specification. This calculator does not determine the fixing pattern.

YOUR ESTIMATE

Fasteners to buy

Base quantity80

Packs to buy1

Whole quantities are rounded up.

PLAN YOUR PROJECT COST

Pricing calculator

Use your supplier’s rate or enter a quoted total. Save each estimate to your project and print everything together.

What are you pricing?

Price is per

Price (optional)

Currency label

Your selected quantity already includes any allowance shown in that result. Check whether you are pricing individual items or whole packs. Delivery, tax and labour are not added automatically. A quoted total applies only to this saved calculation.

Drywall screws Calculator: measuring notes and method

Count the relevant fixing locations

Choose one counting basis: sheets or individual fixing locations. Use a rate per sheet for the former and a rate per location for the latter.

Separate fixing types

Keep different screw lengths and types in separate project items so their pack counts remain identifiable.

Formula

Fixings = locations × fixings per location × (1 + waste ÷ 100), rounded up. Packs are rounded up separately.

Product reference: USG material estimator

Worked example

Illustrative values match Reset example and stay fixed when you edit the calculator.

Starting-value worked example

Pieces / fixing locations: 20
Fixings per piece / location: 4
Fixings per pack: 100
Waste allowance: 10 %

Fasteners to buy: 88

Follow the calculation

Base fixings = 20 × 4 = 80.
Multiply by 1.1 and round up to whole fixings. Divide that count by 100 per pack and round up again.

Reviewed 19 October 2026. How calculations are checked · Report a correction

Related calculators

Drywall CalculatorEstimate plasterboard sheets after deducting openings.Joint compound CalculatorEstimate joint compound containers from product coverage.Paint Coverage CalculatorEstimate paint from any measured surface area.

PRACTICAL READING

Understand the inputs. Check the order.

Measurement methods and worked examples to use alongside this calculator.

Measure walls and ceilings as separate plasterboard surfacesBuild a room takeoff that preserves openings, sheet sizes and lining layers.
Estimate plasterboard finishing materials from the selected systemSeparate screws, joint treatment and full-surface plaster instead of deriving everything from sheet count.
Read coverage and yield before using a calculator defaultFind the rate that matches the product, substrate and application you are actually planning.
Round an estimate into packs without hiding the leftoversKeep the calculated requirement, purchase quantity and potential surplus visible.

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