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CONSTRUCTIONCALCULATORS

89 TOOLS

The complete toolkit for contractors, builders, and DIY enthusiasts. Accurate estimates. Zero guesswork. Save time and money on every project.

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Square Footage Calculator

Calculate room square footage

Measurement
22,400+ uses
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Concrete Calculator

Calculate concrete volume needed

Concrete & Masonry
18,900+ uses
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Paint Calculator

Calculate paint needed

Wall & Ceiling
18,300+ uses
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Flooring Calculator

Calculate flooring materials

Flooring
17,200+ uses
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Feet and Inches Calculator

Add, subtract feet and inches

Measurement
16,900+ uses
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Tile Calculator

Calculate tiles needed

Flooring
16,800+ uses
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Drywall Calculator

Calculate drywall sheets needed

Wall & Ceiling
16,700+ uses
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Concrete Driveway Calculator

Calculate concrete for driveway

Driveway
16,400+ uses
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Carpentry & Trim

9 calculators

Lumber, framing, and trim calculation tools for professional woodworking

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Board and Batten Layout Calculator

Calculate board and batten spacing

8,400+ uses
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Board Foot Calculator

Calculate board feet for lumber

12,300+ uses
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Framing Calculator

Calculate framing materials needed

15,700+ uses
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Lumber and Hardwood Weight Calculator

Calculate lumber weight

9,200+ uses
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Plywood Calculator

Calculate plywood sheets needed

13,800+ uses
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Rafter Length Calculator

Calculate rafter lengths

11,500+ uses
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Concrete & Masonry

11 calculators

Concrete volume, blocks, and masonry material calculations

Block Mortar Calculator

Calculate mortar needed for blocks

9,300+ uses
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Concrete Block Calculator

Calculate concrete blocks needed

14,200+ uses
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Concrete Block Fill Calculator

Calculate concrete fill for blocks

8,600+ uses
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Concrete Calculator

Calculate concrete volume needed

18,900+ uses
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Concrete Footing Calculator

Calculate concrete for footings

12,700+ uses
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Concrete Mix Calculator

Calculate concrete mix ratios

11,400+ uses
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Deck & Patio

6 calculators

Deck boards, pavers, and outdoor structure calculations

Baluster Calculator

Calculate baluster spacing

9,400+ uses
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Deck Board Material Calculator

Calculate deck boards needed

13,800+ uses
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Deck Stain Calculator

Calculate deck stain needed

10,700+ uses
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Paver Base Calculator

Calculate paver base material

12,300+ uses
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Paver Calculator

Calculate pavers needed

15,600+ uses
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Polymeric Sand Calculator

Calculate polymeric sand needed

8,900+ uses
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Driveway

4 calculators

Asphalt, concrete, and gravel driveway calculations

Asphalt Calculator

Calculate asphalt needed

14,200+ uses
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Asphalt Sealer Calculator

Calculate asphalt sealer needed

9,800+ uses
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Concrete Driveway Calculator

Calculate concrete for driveway

16,400+ uses
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Gravel Driveway Calculator

Calculate gravel for driveway

13,700+ uses
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Fence

4 calculators

Fence materials, posts, and staining calculations

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Fence Calculator

Calculate fence materials needed

15,300+ uses
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Fence Stain Calculator

Calculate fence stain needed

9,200+ uses
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Post Hole Concrete Calculator

Calculate concrete for posts

11,800+ uses
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Vinyl Fence Calculator

Calculate vinyl fence materials

12,500+ uses
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Flooring

4 calculators

Carpet, tile, and flooring material calculations

Carpet Calculator

Calculate carpet needed

14,900+ uses
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Flooring Calculator

Calculate flooring materials

17,200+ uses
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Linear Feet to Square Feet Calculator

Convert linear to square feet

10,600+ uses
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Tile Calculator

Calculate tiles needed

16,800+ uses
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Lawn & Landscaping

14 calculators

Mulch, gravel, soil, and landscaping material calculations

Acreage Calculator

Calculate acreage from dimensions

12,400+ uses
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Elevation Grade Calculator

Calculate elevation grade

10,300+ uses
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Grass Seed Calculator

Calculate grass seed needed

13,700+ uses
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Gravel Calculator

Calculate gravel volume needed

15,900+ uses
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Lawn Mowing Calculator

Calculate lawn mowing time

8,200+ uses
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Mulch Calculator

Calculate mulch needed

14,600+ uses
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Measurement

16 calculators

Volume, area, and unit conversion calculators

Cubic Feet Calculator

Calculate cubic feet volume

15,200+ uses
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Cubic Inches Calculator

Calculate cubic inches volume

11,800+ uses
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Cubic Meters Calculator

Calculate cubic meters volume

12,700+ uses
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Cubic Yards Calculator

Calculate cubic yards volume

14,900+ uses
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Cylinder Cubic Footage Calculator

Calculate cylinder cubic feet

10,300+ uses
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Cylinder Cubic Yardage Calculator

Calculate cylinder cubic yards

9,700+ uses
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Plumbing & HVAC

7 calculators

Flow rate, BTU, and HVAC system calculations

CFM Calculator

Calculate cubic feet per minute

13,700+ uses
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Flow Rate Calculator

Calculate flow rate

12,400+ uses
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Furnace BTU Calculator

Calculate furnace BTU needed

14,800+ uses
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Pipe Volume Calculator

Calculate pipe volume

11,200+ uses
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Refrigerant Line Charge Calculator

Calculate refrigerant charge

9,600+ uses
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Water Velocity Calculator

Calculate water velocity

10,800+ uses
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Roofing

17 calculators

Roofing materials, pitch, and sheathing calculations

Plywood for Roof Calculator

Calculate plywood needed for roof

19,400+ uses
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OSB Sheathing Calculator

Calculate OSB sheathing needed for roof

19,800+ uses
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Sheathing Calculator

Calculate sheathing multi purpose

19,800+ uses
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Wall Sheathing Calculator

Calculate wall sheathing needed

14,600+ uses
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How Much Plywood Do I Need Calculator

Calculate how much plywood you need

20,400+ uses
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Ice & Water Shield Calculator

Calculate ice shield needed

9,400+ uses
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Siding

5 calculators

Siding, brick, and exterior material calculations

Board and Batten Siding Calculator

Calculate board siding materials

10,200+ uses
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Brick Calculator

Calculate bricks needed

14,900+ uses
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Clapboard and Lap Board Siding Calculator

Calculate clapboard siding

9,700+ uses
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Siding Material Calculator

Calculate siding materials

13,500+ uses
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Vinyl Siding Calculator

Calculate vinyl siding needed

12,800+ uses
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Wall & Ceiling

3 calculators

Drywall, paint, and wall covering calculations

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Drywall Calculator

Calculate drywall sheets needed

16,700+ uses
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Paint Calculator

Calculate paint needed

18,300+ uses
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Wallpaper Calculator

Calculate wallpaper rolls needed

11,900+ uses
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Why Professionals Choose Us

Industry-standard calculations trusted by contractors nationwide

Instant Results

Get accurate material estimates in seconds, not hours. No signup required.

Industry Accurate

Formulas validated by construction professionals with built-in waste factors.

100% Free

All 89 calculators are completely free. No hidden fees, no premium tiers.

Save Your Work

Save calculations, export to PDF, and access from any device.

Trusted by 68K+

Join thousands of contractors and DIYers who rely on our tools monthly.

89 Calculators

From concrete to carpet, we have every construction calculation covered.

Frequently Asked Questions

Everything you need to know about our construction calculators

What are construction calculators?

Construction calculators are specialized digital tools designed to help estimate materials, costs, and measurements for building projects. They automate complex mathematical formulas used in construction, ensuring accuracy and saving time for contractors, builders, and DIY enthusiasts.

How do I calculate concrete needed for a project?

To calculate concrete, multiply length × width × depth (all in feet), then divide by 27 to convert to cubic yards. Our Concrete Calculator handles this automatically and includes waste factors (typically 5-10% extra) to ensure you order enough material.

What's the difference between board feet and linear feet?

Linear feet measures length only (like a tape measure), while board feet is a volume measurement used for lumber: (thickness × width × length) ÷ 144. Our Board Foot Calculator makes this conversion simple.

How accurate are these calculators?

Our calculators use industry-standard formulas and are regularly validated by construction professionals. They typically include waste factors and safety margins. However, complex projects may require professional consultation.

Can I save my calculations?

Yes! Most of our calculators allow you to save, print, or export your calculations. Create a free account to save your project estimates and access them from any device.

Do you have calculators for commercial projects?

Yes, our calculators work for both residential and commercial projects. For large commercial projects, we recommend using our calculators as estimates and consulting with material suppliers for bulk pricing.
4.9/5 from 2,947 reviews

What Our Users Say

Trusted by contractors, builders, and DIY enthusiasts nationwide

"These construction calculators have saved our company thousands in material costs and prevented countless ordering errors. The concrete and framing calculators are essential tools for our daily estimates."

Robert Thompson

General Contractor

Thompson Construction LLC

Commercial Renovation

"I used the concrete, drywall, and paint calculators for my basement remodel. Ordered exactly the right amount of materials and stayed under budget! Highly recommend for any DIY project."

Jennifer Martinez

DIY Homeowner

Homeowner

Basement Remodel

"The measurement converters and material calculators are incredibly accurate. We use them for all our project bids now. The square footage calculator alone has streamlined our estimation process."

Michael Chen

Project Manager

BuildRight Inc.

Multi-unit Housing

"The landscaping calculators—especially mulch, gravel, and sod—are perfectly calibrated for real-world conditions. My clients appreciate the accurate quotes, and I save hours on calculations."

Sarah Williams

Landscape Architect

Green Spaces Design

Residential Landscaping

Ready to Start Your Project?

Get accurate material estimates in seconds. All 89 calculators are completely free—no signup required.

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