Commercial Trade & Material Estimators
Instant client-side calculators built for contractors and homeowners. Calculate true pitch multipliers, concrete yardage with compaction, EV wire gauge, and thermal loads adhering to IRC, NEC, and ACI standards.
Browse Trade Estimators by Category
Engineering-grade trade estimators calibrated to official building codes, trade engineering formulas, and real-time regional labor rates.
Roofing, Gutters & Exterior
Calculators for shingle bundles, metal panels, pitch multipliers, gutters, EPDM, and siding.
Architectural Shingle Bundle & Waste Estimator
Standing Seam Metal Roof Panel & Fastener Estimator
Roof Pitch Multiplier & Common Rafter Length Sizer
Gutter Sizing & Downspout Drainage Capacity Estimator
EPDM Rubber Membrane & Bonding Adhesive Estimator
Vinyl Siding Squares, J-Channel & Trim Estimator
HVAC, Plumbing & Water Systems
Calculators for mini split BTUs, heat pump climate sizing, tankless GPM, sump pump head, and PEX runs.
Mini Split BTU Sizing Calculator by Room Size & Climate
Heat Pump Tonnage & Climate Zone Sizing Calculator
Tankless Water Heater Flow Rate & BTU Sizing Estimator
Sump Pump Head Pressure & Discharge Flow Estimator
PEX Pipe Sizing & Water Supply Fixture Unit (WSFU) Sizer
French Drain Trench Slope & #57 Stone Volume Calculator
Garage, Doors & Concrete
Calculators for garage slabs, monolithic footings, torsion spring IPPT, epoxy kits, and CMU blocks.
Garage Door Weight & Opener Horsepower Estimator
Garage Door Torsion Spring IPPT & Wind Count Estimator
Garage Floor Epoxy Kit, Flake & Topcoat Estimator
Monolithic Slab & Perimeter Footing Concrete Yardage Estimator
24x24 Garage Concrete Slab Yardage & Turnkey Cost Calculator
CMU Concrete Block Wall, Mortar & Grout Estimator
Electrical, Solar & EV Charging
Calculators for EV charger wire gauge, subpanels, generator load, conduit fill, and solar battery banks.
Level 2 EV Charger Wire Gauge & Voltage Drop Calculator
100-Amp Subpanel Feeder Wire Gauge & Conduit Sizing Calculator
Whole House Standby Generator kW Sizing Calculator
Electrical Conduit Fill & Minimum Trade Size Calculator
Recessed Can Light Spacing & Room Lumen Calculator
Solar Battery Bank Capacity (kWh) & Off-Grid Runtime Calculator
Landscaping, Paving & Earthwork
Calculators for crushed limestone, retaining walls, paver sand, topsoil volume, and soil swell truckloads.
Crushed Limestone Driveway Tonnage & Yardage Calculator
Retaining Wall Block, Cap & Drainage Gravel Estimator
Paver Patio Base Gravel, Bedding Sand & Polymeric Sand Calculator
Raised Garden Bed Soil Volume & Compost Blend Calculator
Excavation Soil Swell & Dump Truck Load Estimator
Sod Pallet, Square Footage & Lawn Roll Coverage Estimator
Need Licensed Local Contractors for Your Trade Project?
Connect with pre-screened roofing, HVAC, concrete, electrical, and landscaping professionals. Get up to 3 competitive, no-obligation bids tailored to your exact measurements.
Building Code Aligned
Every mathematical engine cross-references NFPA 70 (NEC), International Residential Code (IRC), and American Concrete Institute (ACI) formulas to ensure structural compliance.
Dual-Output Intelligence
Calculators provide both raw material packaging counts (bags, bundles, rolls) and turnkey licensed contractor installation pricing to help homeowners budget effectively.
Zero-Cost Static Engine
Engineered using pure client-side JavaScript and Next.js static prerendering. Calculations occur instantaneously in your browser with zero latency and 100/100 Core Web Vitals.