Free Online Trade Calculators
Use these interactive calculators directly in your web browser, or download the Android app to save measurements room-by-room and generate client estimates.
Square Foot Calculator
Quickly calculate length × width in feet and inches with contractor waste allowance (5%–20%) and unit pricing.
Launch Calculator →Flooring Calculator
Determine exact box counts and cost for luxury vinyl plank (LVP), engineered hardwood, and laminate with automatic carton rounding.
Launch Calculator →Tile Calculator
Calculate tile piece counts, wet saw cut waste, and mortar requirements for floors, shower walls, and backsplashes.
Launch Calculator →Concrete Calculator
Determine ready-mix truck volume in cubic yards or pre-mix bag counts (80-lb and 60-lb) for slabs, patios, and footings.
Launch Calculator →Paint Calculator
Figure wall square footage and gallons required, subtracting door and window cutouts for 1-coat or 2-coat jobs.
Launch Calculator →Full Multi-Trade Estimator
Combine multiple rooms, materials, labor hours, contractor profit markup, and sales tax into a single PDF quote on Android.
Get Android AppBuilt Around How Contractors Actually Work
No complex desktop SaaS menus. No cloud logins. Just walk through the job site, take measurements, and produce an estimate on the spot.
1. Measure On Site
Input room-by-room measurements using standard US units (feet and inches). The app automatically calculates square footage, deductions, and trade-specific waste factors.
2. Price Materials & Labor
Add material items with unit pricing, box rounding, and extra items. Add labor as hourly rates or flat fees. Dial in your overhead markup % and local sales tax.
3. Quote the Customer
Generate a professional, clean PDF estimate right in front of the homeowner. Share via text message, email, or print directly before leaving the driveway.
Why Contractors Choose Square Foot & Job Estimator
⚡ 100% Offline-First
Basements, new framing subdivisions, and remote rural jobs often have zero cell signal. All math, storage, and PDF generation run entirely local on your device.
🔒 Complete Privacy
No forced email sign-up, no password creation, and no cloud data harvesting. Your client names, addresses, and profit margins stay strictly on your phone.
📦 Real-World Box Rounding
Stores don't sell 13.4 boxes of vinyl plank or 2.3 bags of concrete. The app calculates real purchase units to keep you from running short on the job.
📄 Client-Ready PDF Quotes
Stop writing quotes on scraps of 2x4 lumber or sending rough text numbers. Send polished estimates with itemized breakdowns and terms of service.