Union Estimating LLC

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Free Construction
Estimator Tools

Six professional-grade calculators built for contractors, estimators, and developers. Enter your dimensions, get instant quantities and pricing — download a formatted report in PDF or Excel.

Roofing · Flooring · Drywall · Electrical · HVAC · Concrete — 100% free, no account required

Instant Results

Get quantities and pricing in seconds — no signup, no waiting.

Professional Accuracy

Built on the same unit cost data our estimators use on real projects.

PDF & Excel Export

Download a formatted report you can share with clients or use for bidding.

Save Hours of Work

What takes an estimator 2–4 hours, our tools calculate in under 2 minutes.

6 Free Tools

Choose Your Calculator

Each tool is built on professional estimating data. Results are for budgeting and preliminary estimating — for a final bid-ready estimate, contact our team.

Most Popular
01

Roofing Estimator

Enter roof dimensions, pitch, and material type. Get instant material quantities, waste factors, and a complete cost estimate with PDF/Excel download.

You Enter

Roof length, width, pitch, material type, number of layers

You Get

  • Roofing area (SF)
  • Material quantities by type
  • Waste factor calculation
  • Labor & material cost estimate
  • PDF & Excel download
Open Calculator
02

Flooring Estimator

Add room dimensions and select your flooring material. Get a full quantity takeoff with waste factor, adhesive, underlayment, and total installed cost.

You Enter

Room length, width, material type, waste %, subfloor condition

You Get

  • Floor area (SF)
  • Material quantity + waste
  • Underlayment & adhesive
  • Transition strips (LF)
  • Total installed cost estimate
Open Calculator
03

Drywall Estimator

Enter wall lengths, heights, and stud spacing. Our calculator outputs stud count, drywall board count, screws, tape, joint compound, and primer — with pricing.

You Enter

Wall lengths, wall heights, stud spacing, board size, number of coats

You Get

  • Stud count by spacing
  • Drywall board count (4×8 or 4×12)
  • Screws & fasteners
  • Joint tape (LF) & compound (gal)
  • Total material + labor estimate
Open Calculator
04

Electrical Estimator

Input conduit runs, wire types, panel size, and device counts. Get a rough electrical estimate with material list broken out by circuit type.

You Enter

Conduit type/length, wire gauge/type, device counts, panel amperage, fixture counts

You Get

  • Conduit lengths by type (EMT, PVC, MC)
  • Wire quantities by gauge
  • Device & fixture counts
  • Panel & breaker schedule
  • Rough material + labor estimate
Open Calculator
05

HVAC Estimator

Enter room areas, building type, and system type. Get ductwork quantities, equipment sizing, and a rough HVAC cost estimate for budgeting and bidding.

You Enter

Room areas, building type, system type (split/RTU/VRF), climate zone, insulation R-value

You Get

  • Ductwork area by type (SF)
  • Equipment sizing (tons/BTU)
  • Diffuser & grille counts
  • Refrigerant piping (LF)
  • Rough HVAC cost estimate
Open Calculator
06

Concrete Estimator

Enter slab, footing, or wall dimensions and mix design. Get concrete volume in CY, rebar weight, formwork area, and a complete concrete cost estimate.

You Enter

Element type (slab/footing/wall), dimensions, thickness, rebar size/spacing, mix design

You Get

  • Concrete volume (CY)
  • Rebar weight (lbs) by size
  • Formwork area (SF)
  • Concrete mix & admixtures
  • Total concrete cost estimate
Open Calculator

Important Note

These tools provide preliminary estimates for budgeting purposes only. Results are based on national average unit costs and may vary by region, project complexity, and current market conditions. For a certified, bid-ready estimate with drawing-referenced quantities, contact our team.

Get a Professional Estimate