AddSub Construction Calculator

Ditch the scrap paper and stop second-guessing your math. AddSub is the ultimate fractional calculator designed specifically for contractors, carpenters, DIYers, and tradespeople who need fast, accurate results on the job site. Whether you’re framing a house, pouring a concrete slab, or estimating materials for a renovation, AddSub handles the complex math of feet, inches, and fractions so you don’t have to. KEY FEATURES: • FRACTIONAL MATH MADE SIMPLE: Add, subtract, multiply, and divide measurements in feet-inches and fractions (down to 1/16th). No more converting to decimals just to do a simple calculation. • POWERFUL UNIT CONVERTER: Instantly convert between Imperial and Metric units, including Feet, Inches, Yards, Meters, Centimeters, and Millimeters. • COMPREHENSIVE CONTRACTOR TOOLS (PRO): ◦ Area & Volume: Calculate square footage for flooring or cubic yardage for excavations. ◦ Board Feet: Quickly estimate lumber needs with a dedicated board-foot calculator. ◦ Concrete Estimator: Plan your pour with accuracy. Calculate cubic yards and the exact number of 60lb or 80lb bags needed for your project. ◦ Sq Ft + Waste: Calculate your total area and automatically add a 5% to 25% waste factor for tile, hardwood, or roofing. • INSTANT HISTORY: Never lose a calculation. Access your recent results in a clean history log to review your dimensions as you work. • PDF EXPORT & SHARE (PRO): Turn your calculations into professional PDF reports. Print them directly from your phone or share them with clients and team members via email or text. WHY CHOOSE ADDSUB? • CLEAN, JOB-READY UI: Our new Home Hub gives you one-tap access to every tool. No buried menus—just the tools you need, right when you need them. • ACCURACY YOU CAN TRUST: Built for the real world, AddSub ensures your measurements are precise, helping you reduce material waste and costly errors. • BUILT FOR SPEED: Optimized for high-performance use, the app stays interactive even during complex calculations. UPGRADE TO ADDSUB PRO: Unlock the full power of your digital toolbox. Pro members enjoy: • Advanced Math: Unlock multiplication and division for fractional measurements. • Full Access: Use all Contractor Tools and the Unit Converter. • Professional Reporting: Export and share your history as PDF files. • Ad-Free Experience: Focus on the job without interruptions. Stop fighting with your standard calculator. Download AddSub today and get the job done right the first time!