Free Contractor Widgets
Builders, subcontractors, building supply yards, and home service companies can embed any of our 10 precision US material calculators for free. Fully responsive, mobile-optimized, and free of third-party tracking.
Concrete & Masonry
Concrete Slab & Bag Estimator
Pre-solved concrete bag calculator for exact slab sizes. Get the exact number of 40lb, 60lb, or 80lb Quikrete bags needed for your project.
<iframe src="https://yardandslab.com/embed/concrete-slab-calculator" width="100%" height="680" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px;"></iframe>
Landscaping & Drainage
French Drain Gravel & Pipe Displacement Calculator
Calculate gravel, pipe displacement, and geotextile fabric for French drain installations. Subtracts exact 4" or 6" pipe volume.
<iframe src="https://yardandslab.com/embed/french-drain-gravel-calculator" width="100%" height="680" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px;"></iframe>
Woodworking & Epoxy
Live-Edge River Table Epoxy Estimator
Calculate exact epoxy resin gallons for live-edge river tables with irregular channel widths. Handles seal coat vs deep-pour split.
<iframe src="https://yardandslab.com/embed/river-table-epoxy-calculator" width="100%" height="680" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px;"></iframe>
HVAC & Plumbing
Mini-Split BTU Sizing Calculator
Size your mini-split AC unit by US Climate Zone (IECC Zones 1-8), ceiling height, sun exposure, and room type.
<iframe src="https://yardandslab.com/embed/mini-split-btu-calculator" width="100%" height="680" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px;"></iframe>
Landscaping & Drainage
Paver Base, Sand & Polymeric Sand Estimator
Calculate compacted gravel base tons, bedding sand bags, and polymeric sand for paver patios and driveways.
<iframe src="https://yardandslab.com/embed/paver-base-calculator" width="100%" height="680" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px;"></iframe>
Deck & Fencing
Deck Baluster Spacing Calculator
Calculate exact baluster spacing to pass US building code (<4" gap). Generates printable cut/mark layout tape table.
<iframe src="https://yardandslab.com/embed/deck-baluster-spacing-calculator" width="100%" height="680" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px;"></iframe>
Landscaping & Drainage
Lawn Overseeding & Fertilizer Rate Calculator
Calculate seed pounds and starter fertilizer per 1,000 sq ft tailored to Kentucky Bluegrass, Tall Fescue, Bermuda, or Zoysia.
<iframe src="https://yardandslab.com/embed/lawn-overseeding-calculator" width="100%" height="680" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px;"></iframe>
Concrete & Masonry
Drywall Sheet & Joint Compound Estimator
Calculate 4x8 vs 4x12 drywall sheets, joint compound gallons, paper tape rolls, and drywall screws for any room.
<iframe src="https://yardandslab.com/embed/drywall-calculator" width="100%" height="680" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px;"></iframe>
Deck & Fencing
Post Hole Concrete Estimator
Calculate bags of fast-setting concrete for fence or deck posts. Subtracts the displaced post volume from cylindrical hole volume.
<iframe src="https://yardandslab.com/embed/post-hole-concrete-calculator" width="100%" height="680" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px;"></iframe>
HVAC & Plumbing
Sump Pump GPH & TDH Sizing Calculator
Find the correct sump pump HP and GPH using vertical lift, horizontal run, elbows, and water table severity inputs.
<iframe src="https://yardandslab.com/embed/sump-pump-calculator" width="100%" height="680" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px;"></iframe>