EstimationPro AI EstimationPro AI

For Contractors, By Contractors

Free Construction Calculators & Tools

66 free calculators, cost estimators, bid templates, and AI tools built for contractors. Calculate materials, estimate project costs, and create professional bids. No signup required.

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Estimate → Proposal → Auto Follow-Up → Invoice → Paid
66 free tools & calculators Updated February 2026 Trusted by 1,000+ contractors

66 free tools

Business Calculators

Calculate markup, labor costs, and pricing for your contracting business. Know your numbers before you quote so every bid is profitable.

Markup vs Margin Explained →How Much to Charge for Labor →

Markup Calculator

Calculate your contractor markup, profit margin, and selling price instantly. Enter your costs and desired markup percentage to get accurate pricing.

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Labor Cost Calculator

Estimate total labor costs for construction projects. Factor in hourly rates, crew size, project duration, and labor burden for accurate bids.

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Painting Estimate

Calculate painting costs for any room or project. Enter room dimensions to get paint quantity, labor hours, material costs, and total estimates.

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Square Footage

Calculate square footage for any shape — rectangles, triangles, circles, and complex rooms. Convert between square feet, yards, and meters.

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Profit Margin

Calculate profit margin, markup percentage, and net profit for any job. Enter revenue and costs to see gross margin, net margin after overhead, and markup comparison.

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Hourly Rate

Calculate your minimum billable hourly rate based on salary goals, overhead costs, billable hours, and desired profit margin.

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Burdened Labor Rate

Calculate the true cost of an employee including payroll taxes, workers comp, health insurance, PTO, and benefits. See the burden multiplier and annual cost.

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Overhead Calculator

Calculate your overhead rate, total overhead costs, and overhead per job. Enter expenses by category and annual revenue to see your true overhead percentage.

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Material Calculators

Calculate exact material quantities for concrete, drywall, roofing, paint, tile, mulch, gravel, and more. Stop over-ordering and reduce waste on every job.

Drywall Estimate Per Square Foot →How Much Paint Do I Need? →How to Calculate Concrete for a Patio →

Drywall Calculator

Calculate drywall sheets, joint compound, tape, and screws needed for any room. Enter dimensions to get a complete materials list.

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Fence Calculator

Calculate fence materials and costs. Enter linear feet and fence type to get posts, rails, pickets, concrete, and total cost estimates.

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Concrete Calculator

Calculate cubic yards of concrete needed for slabs, footings, columns, and walls. Enter dimensions to get volume, bags, and cost estimates.

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Roofing Calculator

Calculate roofing materials and costs. Enter roof dimensions and pitch to get shingles, underlayment, flashing, and total project cost.

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Paint Calculator

Calculate how much paint you need for any room or surface. Enter dimensions and get gallons needed, with cost estimates for different paint grades.

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Mulch Calculator

Calculate cubic yards and bags of mulch needed for your landscaping project. Enter bed dimensions and desired depth for accurate quantities.

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Gravel Calculator

Calculate tons and cubic yards of gravel needed for driveways, paths, and landscaping. Enter area dimensions and depth for accurate estimates.

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Sand Calculator

Calculate tons and cubic yards of sand needed for bedding, fill, masonry, and concrete projects. Enter area dimensions and depth for accurate estimates.

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Tile Calculator

Calculate tiles needed for floors, walls, and backsplashes. Enter area and tile size to get quantity, grout, and cost estimates with waste factor.

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Flooring Calculator

Calculate flooring materials and costs for any room. Enter dimensions and flooring type to get quantity, underlayment, and total cost estimates.

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Siding Calculator

Calculate siding materials and costs for your home exterior. Enter wall dimensions to get squares, trim, and total cost by siding type.

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Retaining Wall

Calculate retaining wall materials including blocks, gravel, and geogrid. Enter wall dimensions for a complete materials and cost estimate.

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Cubic Yard

Calculate cubic yards for gravel, soil, mulch, concrete, and sand. Enter dimensions for rectangles, cylinders, or triangles to get volume and tonnage.

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Paver Calculator

Calculate pavers needed for patios, driveways, and walkways. Get base gravel, sand, and polymeric sand quantities with waste factor by pattern.

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Lumber Calculator

Calculate total boards, linear feet, board feet, and cost for any framing or building project. Add multiple lumber sizes and lengths.

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Asphalt Tonnage

Calculate asphalt tonnage for driveways, parking lots, and paving projects. Enter dimensions to get tons, cubic yards, and cost estimates for hot mix, recycled millings, and cold patch.

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Concrete Bags

Calculate how many bags of concrete you need for slabs, post holes, and footings. Get bag counts for 40, 60, or 80 lb bags with cost estimates and waste factor.

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Cost Estimators

Estimate total project costs for kitchens, bathrooms, decks, basements, garages, and landscaping. Get detailed cost breakdowns by scope and quality level.

How to Estimate Construction Jobs →Best Construction Estimating Software →

Deck Cost

Estimate the total cost to build a deck. Enter dimensions, material type, and features to get a detailed cost breakdown with materials and labor.

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Kitchen Remodel

Estimate kitchen remodel costs by scope. Select cabinets, countertops, flooring, appliances, and finishes to get a detailed cost breakdown.

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Bathroom Remodel

Estimate bathroom renovation costs. Select fixtures, tile, vanity, and finishes to get a detailed cost breakdown for your bathroom project.

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Cost Estimator

Estimate total construction costs for any project type. Enter square footage, project type, and quality level to get a comprehensive cost breakdown.

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Renovation Cost

Estimate home renovation costs by room and scope. Get cost ranges for kitchen, bathroom, basement, and whole-home renovation projects.

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Basement Remodel

Estimate basement finishing and remodeling costs. Enter square footage and select finishes to get a detailed cost breakdown.

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Room Addition

Estimate the cost of a room addition. Enter square footage, foundation type, and finishes to get a complete cost breakdown.

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Garage Cost

Estimate the cost to build a garage. Select size, type (attached/detached), and features to get a detailed construction cost breakdown.

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Landscaping Cost

Estimate landscaping project costs. Select services like grading, planting, hardscaping, and irrigation to get a detailed cost breakdown.

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Driveway Cost

Calculate driveway installation costs by material type. Compare concrete, asphalt, gravel, and paver prices with excavation, base prep, and removal estimates.

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Specialty Calculators

Technical calculators for stairs, roof pitch, insulation R-values, HVAC load, rebar spacing, and board feet. Built on building codes and manufacturer specs.

Roofing Labor Cost Per Square →What is a Construction Takeoff? →

Insulation Calculator

Calculate insulation needed for walls, attics, and floors. Select R-value and insulation type to get quantity, coverage, and cost estimates.

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Stair Calculator

Calculate stair dimensions including rise, run, number of steps, and stringer length. Enter total rise and run for code-compliant stair design.

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Roof Pitch

Calculate roof pitch in degrees, ratio, and percentage. Enter rise and run measurements to determine your roof slope and rafter length.

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Board Foot

Calculate board feet for lumber orders. Enter thickness, width, and length to convert to board feet and estimate costs for any lumber project.

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Rebar Spacing

Calculate rebar bar count, total length, and stock bars needed for a concrete slab or footing. Enter length, width, and spacing to get a complete rebar grid takeoff.

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Anchor Bolt Spacing

Calculate the number of anchor bolts needed for sill plates and foundation walls per IRC/IBC code. Get bolt counts, spacing, and material cost estimates.

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HVAC Load

Estimate HVAC heating and cooling load for residential spaces. Enter home size, insulation, windows, and climate zone for BTU requirements.

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BTU Calculator

Calculate BTU requirements for heating and cooling any room or home. Factor in square footage, insulation, climate zone, windows, and sun exposure.

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Feet & Inches

Add, subtract, multiply, and divide measurements in feet, inches, and fractions. Convert between imperial and metric units instantly.

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Wire Size

Calculate the correct AWG wire gauge based on amperage, voltage, distance, and acceptable voltage drop. Supports copper and aluminum conductors.

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Joist Span

Check maximum joist spans by lumber size, wood species, and spacing. Get joist counts, board feet, and lumber cost estimates for floor and deck framing.

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Templates & Generators

Professional bid, estimate, change order, and checklist templates ready to customize and download. Save hours on paperwork for every project.

Construction Bid Tips →How to Write a Scope of Work →

Bid Template

Generate a professional construction bid template. Fill in your project details, line items, and terms to create a downloadable bid document.

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Plumbing Template

Generate a professional plumbing estimate template. Add fixtures, pipe runs, labor hours, and materials for a complete plumbing bid.

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Electrical Template

Generate a professional electrical estimate template. Add circuits, outlets, fixtures, and labor for a complete electrical bid document.

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Change Order

Generate a professional construction change order. Document scope changes, cost adjustments, and schedule impacts with a standardized template.

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Estimate Template

Generate a professional contractor estimate template. Add line items, materials, labor, and terms for a complete estimate document.

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Estimate Template

Generate a detailed construction estimate template with categories for materials, labor, equipment, subcontractors, and overhead.

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Pre-Construction

Interactive pre-construction checklist for general contractors. 43 items across 8 categories: permits, insurance, contracts, site prep, utilities, safety, materials, and scheduling.

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Invoice Template

Generate a professional contractor invoice with itemized line items, tax calculation, and payment terms. Fill in your details, copy or print.

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Allowance Schedule

Create a professional allowance schedule for remodel contracts. Add categories, set amounts, and print with standard overage and credit terms.

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Payment Schedule

Create a milestone-based payment schedule for construction contracts. Set percentage draws, customize milestones, and print with standard payment terms.

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Scope of Work

Generate a professional subcontractor scope of work document. Fill in project details, inclusions, exclusions, and payment terms. Copy or print.

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AI Tools

AI-powered tools that create professional scope of work documents and project descriptions in seconds. Enter your project details, get polished output.

Scope of Work Writing Guide →

Scope of Work

Generate a detailed construction scope of work using AI. Enter your project type and requirements to get a professional scope document in seconds.

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Cost Guides

Detailed 2026 cost breakdowns and pricing guides for roofing, kitchens, bathrooms, decks, fencing, flooring, windows, and concrete. Updated with current material and labor rates.

Tile Installation Cost Per Sq Ft →Siding Installation Cost Per Sq Ft →Flooring Installation Labor Guide →

Concrete Cost

Look up current concrete costs per cubic yard and calculate total project cost. Includes delivery fees, pump costs, and finishing labor.

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Bath Cost Guide

How much does a bathroom remodel cost? Get detailed cost breakdowns by project scope — from basic updates to full gut renovations.

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Deck Cost Guide

How much does it cost to build a deck? Get detailed cost breakdowns by size, material, and features with a built-in cost calculator.

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Kitchen Cost Guide

How much does a kitchen remodel cost? Get detailed cost breakdowns by scope — minor refresh ($5K-$15K), mid-range ($15K-$40K), major ($40K-$80K), luxury ($80K+).

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Roof Cost Guide

How much does a roof replacement cost? Get detailed pricing by material — asphalt ($4-$7/sqft), metal ($7-$14), tile ($10-$18), slate ($15-$30).

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Fence Cost Guide

How much does a fence cost? Get 2026 installed prices by material — wood ($15-$35/ft), vinyl ($20-$45/ft), aluminum ($25-$55/ft), chain link ($8-$18/ft).

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Flooring Cost Guide

How much does new flooring cost? Get 2026 prices by type — hardwood ($6-$20/sqft), LVP ($3-$8), laminate ($3-$8), tile ($6-$22), carpet ($2-$8).

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Window Cost Guide

How much does window replacement cost? Get 2026 prices by type — double-hung ($300-$800), casement ($400-$1,000), bay ($1,000-$4,000). Frame and energy rating options.

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Love the free tools? The full platform does even more.

EstimationPro AI takes you from estimate to payment. Build detailed bids, send professional proposals, and let automated follow-ups close more jobs while you're on site.

AI-Powered Estimating

Upload photos, record voice notes, or type your scope. Get detailed line-item estimates with regional pricing in minutes.

Auto Follow-Up

Day 1, day 3, day 7. Customizable sequences that keep you top-of-mind without chasing.

Get Paid Online

Invoice and collect payments through Stripe. No chasing checks.

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No credit card required. See all features →

Why Contractors Love Our Tools

Built by a contractor with 20+ years in the trades. Used every day to save time and win more work.

Instant Results

Get accurate calculations in seconds. See a ballpark price range instantly, then watch detailed results stream in real time.

Industry Accurate

AI calibrated against a real contractor pricing database with regional labor and material rates. Every total is math-verified.

Works on Any Device

Use on your phone at the job site or your laptop in the office. Fully responsive.

Get Free Estimating Tips

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Frequently Asked Questions

Are these construction calculators really free?

Yes, all calculators and tools are 100% free with no signup required. Use them as many times as you need from any device.

How accurate are the material calculators?

Our calculators use formulas based on building codes, manufacturer specifications, and real contractor pricing data. They include standard waste factors and are designed for professional use.

Can I use these tools on my phone at a job site?

Absolutely. Every tool is fully responsive and works on phones, tablets, and laptops. No app download needed.

How often are the cost guides updated?

Cost guides and pricing data are updated regularly to reflect current material and labor rates. Last updated February 2026.

What is EstimationPro AI?

EstimationPro AI is estimating software that helps contractors create professional estimates, send polished proposals, and automatically follow up with clients until they get a yes or no. The free tools on this page are a complement to the full platform.

Do I need EstimationPro AI to use the free calculators?

No. The free calculators work independently with no account needed. EstimationPro AI is a separate product for contractors who want a complete estimate-to-payment workflow.

Need Full Estimates? Try EstimationPro AI

Go beyond calculators. Upload photos, record voice notes, and get AI-generated line-item estimates with material lists and project schedules. Send proposals, collect payments. All in one workflow.

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