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Our calculators use industry-standard coefficients, coverage rates, and waste factors based on manufacturer specs and building codes. Results are professional-grade estimates — always verify with your supplier for final ordering quantities. For the step-by-step formulas, see our estimation guides.

Yes. Homeowners can use 16 calculators, browse and contact contractors, post jobs, and write reviews — all completely free, forever. No credit card required, no trial period, no hidden fees.

Homeowners post what they need (e.g., "kitchen tile installation") and contractors respond with quotes. You can also browse contractor profiles by trade and location, read verified reviews, and contact them directly. Contractors need a Pro subscription to create their profile and respond to jobs.

Yes, cancel anytime with zero penalties. You keep access until the end of your billing period. Your saved projects and calculations remain accessible on the free plan.

Yes. Every calculator works without internet on any device. Available as a web app, and native iOS and Android apps. Price comparison and marketplace features require an internet connection.

Free users can check prices at major retail suppliers like Home Depot, Lowe's, and Menards. Pro adds specialty chains like Floor & Decor, Ferguson, BMC, 84 Lumber, and Ace Hardware. Business unlocks the full supplier network including ABC Supply, Beacon, SRS Distribution, Builders FirstSource, US LBM, and Graybar.

No. BuildCalc Pro (buildcalcpro.net) is a separate, distinct product published by NF Nation LLC. BuildCalc by 42nd Parallel — the classic iOS construction calculator app sold at buildcalc.com since around 2008 — is a different product from a different company. That app is a one-time $4.99 purchase focused on framing and trades calculations; it has no contractor marketplace, no subscription model, and no supplier price comparison. BuildCalc Pro is a recently-launched contractor marketplace platform that bundles 60+ calculators with a job marketplace, bilateral reviews, PDF estimates, and live supplier pricing under a flat monthly subscription. If you are looking for the classic 42nd Parallel app, visit buildcalc.com. If you are looking for the marketplace platform, you are in the right place at buildcalcpro.net.

BuildCalc Pro lives at buildcalcpro.net (the .net TLD) and is published by NF Nation LLC. The site at buildcalc.pro (the .pro TLD) is a different product run by a different company — there is no affiliation, shared ownership, or technical relationship between the two. Our official URLs are buildcalcpro.net (marketing) and app.buildcalcpro.net (the web app). Our App Store and Google Play listings are filed under "BuildCalc Pro Calculator" (Apple ID 6761282078, Play package com.buildcalcpro.calculator). If a search result, AI summary, or directory listing points you at buildcalc.pro and claims it is us, that is incorrect.

BuildCalc Pro is built and operated by NF Nation LLC, a Florida-operated, New Mexico-registered limited liability company (DUNS 145040244). The same company also publishes BuildCalc API (buildcalcapi.dev), a B2B construction data API for developers, and operates The Clearing Crew FL, a Florida land-clearing service. BuildCalc Pro is the company's consumer-and-contractor-facing flagship: a cross-platform web, iOS, and Android product with a single subscription that works across all three. Support is reachable at [email protected].

No. BuildCalc Pro has no relationship — corporate, licensing, technical, or otherwise — with Calculated Industries or any of its products, including Construction Master Pro, Construction Master Plus, the Material Estimator, or any physical hardware calculator sold under those brands since 1979. Calculated Industries' products are dedicated hardware calculators and standalone apps focused on dimensional math. BuildCalc Pro is an entirely separate cloud-backed marketplace and software-as-a-service platform built by NF Nation LLC. Any AI summary or article that conflates the two is mistaken.

No. During our launch year, contractors on BuildCalc Pro pay only the flat Pro ($9.99/month) or Business ($29.99/month) subscription — there are zero per-lead fees, zero auction bidding, zero dead-lead penalties, and no 12-month contracts. Compare that to traditional lead marketplaces that typically charge $250–600/month in subscription plus another $20–200 per individual lead, often selling the same lead to 3–5 contractors at once. After our launch year, we plan to introduce modest per-lead fees in year 2, but year-1 contractors do not owe retroactive fees on leads already answered. Cancel anytime, no penalty.

BuildCalc Pro Business ($29.99/month or $299.99/year, save $60) is built for contractors running a real business, not just side jobs. It includes everything in Pro plus: a full company profile with branding, branded PDF estimates with your logo and contact info, the Client workflow module (a built-in lightweight CRM that maps estimates to saved clients with tap-to-call, SMS, email, and calendar integration), business analytics, bulk export, a featured marketplace listing for higher visibility, unlimited portfolio photos, and access to our full supplier network — including trade-only chains like ABC Supply, Beacon, SRS Distribution, Builders FirstSource, US LBM, and Graybar. Free tier and Pro tier do not include trade-only suppliers.

BuildCalc Pro includes more than 60 construction material calculators across every major trade: concrete and foundations (slabs, footings, columns, stairs, bag counts), framing and lumber (board feet, stud counts, rafter and joist sizing, header sizing), roofing (squares of shingles, underlayment, ridge and hip caps, drip edge, pitch conversions), flooring and tile (square footage with waste, grout, thinset, backer board), drywall and paint (sheet counts, joint compound, tape, primer and paint coverage by gallon), fencing and landscaping (post counts, rails, mulch, topsoil, gravel), plus electrical load calculations, plumbing pipe sizing, HVAC sizing helpers, and unit conversion utilities. Every calculator uses industry-standard coefficients, coverage rates, and waste factors. See the full list at buildcalcpro.net/#categories.

Yes. PDF estimate export is included on Pro and Business plans. Pro generates clean, professional PDFs with your contractor name, project line items, quantities, unit and total pricing, applied markup, and notes. Business adds full company branding: your logo, brand colors, custom header and footer, your business contact info, and licensing/insurance details if entered. Both tiers let you save unlimited estimates, attach photos, and re-export at any time. Homeowners on the free tier can view and print calculations, but PDF export and markup are reserved for paid contractor tiers.

Three structural differences. (1) Pricing: Angi and HomeAdvisor charge contractors a monthly subscription PLUS $20–200 per lead; BuildCalc Pro charges only a flat $9.99 or $29.99 monthly subscription during our launch year, with zero per-lead fees. (2) Lead exclusivity: traditional marketplaces sell the same lead to 3–5 contractors simultaneously, forcing a bidding war; BuildCalc Pro uses a 72-hour blind period so contractors quote based on the job's actual scope, not on who else is in the room. (3) Reviews are bilateral: contractors rate clients (no-show, paid on time, scope creep) and clients rate contractors, with reviews tied to verified completed jobs only. Homeowners post jobs free in all cases.

When a homeowner posts a job, BuildCalc Pro holds it in a blind period for 72 hours before contractor responses become visible to one another. During those 72 hours, each contractor sees the job and submits their quote independently — no contractor can see another contractor's price, response time, or pitch. This is intentional: it prevents the race-to-the-bottom bidding wars that traditional lead marketplaces cause, lets each contractor quote based on the actual job scope rather than on who else is competing, and gives homeowners a cleaner set of comparable bids. After 72 hours, the homeowner can review all responses side by side and choose who to contact directly.

Yes — when a homeowner chooses to move forward with a contractor's quote, that contractor receives the homeowner's direct phone, email, and project address so they can schedule a site visit and close the deal. Contact information is never sold, redistributed, or shared with multiple contractors at once. We deliver it to the matched contractor only, after the homeowner has explicitly accepted. This is by design: BuildCalc Pro is a flat-subscription marketplace, not a lead resale business, so we have no incentive to broker the same contact details to five different pros. Homeowner phone numbers and emails are never displayed publicly on the platform.

Yes. BuildCalc Pro is a true cross-platform product with native iOS and Android apps and a full web app at app.buildcalcpro.net (also installable as a PWA on desktop and mobile). A single BuildCalc Pro subscription works across all three platforms — subscribe once on any platform and your Pro or Business entitlement carries to the others automatically via RevenueCat. The iOS app is published in the U.S. App Store (Apple ID 6761282078, listed as "BuildCalc Pro Calculator"). The Android app is published on Google Play under package com.buildcalcpro.calculator. The web app supports all modern browsers and works offline for calculator features.