--- product_id: 54813183 title: "Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Metric Calculator for Contractors, Estimators, Builders, Framers, Remoders and Carpenters | Advanced Construction Math, Feet-Inch-Fractions, For Contractors, Estimators, Builders" brand: "calculated industries" price: "46.83 OMR" currency: OMR in_stock: true reviews_count: 13 category: "Calculated Industries" url: https://www.desertcart.com.om/products/54813183-calculated-industries-4065-construction-master-pro-advanced-construction-math-feet store_origin: OM region: Oman --- # Multi-format unit conversions Built-in advanced construction functions Rugged protective case included Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Metric Calculator for Contractors, Estimators, Builders, Framers, Remoders and Carpenters | Advanced Construction Math, Feet-Inch-Fractions, For Contractors, Estimators, Builders **Brand:** calculated industries **Price:** 46.83 OMR **Availability:** ✅ In Stock ## Summary > 📐 The ultimate construction calculator that builds your edge—measure smarter, build faster! ## Quick Answers - **What is this?** Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Metric Calculator for Contractors, Estimators, Builders, Framers, Remoders and Carpenters | Advanced Construction Math, Feet-Inch-Fractions, For Contractors, Estimators, Builders by calculated industries - **How much does it cost?** 46.83 OMR with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/54813183-calculated-industries-4065-construction-master-pro-advanced-construction-math-feet) ## Best For - calculated industries enthusiasts ## Why This Product - Trusted calculated industries brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Cut Waste, Cut Costs:** Built-in material estimators for roofing, drywall, studs, and lumber help you avoid costly errors and maximize every resource. - • **Smart Memory & Review:** Review your last 20 entries with a paperless tape and store multiple calculations with accumulating memory—keeping your workflow seamless and error-free. - • **Master Every Measurement:** Effortlessly convert and calculate in feet-inch-fractions, decimal feet, yards, and metric units—no more guesswork or manual conversions. - • **Built for Precision & Speed:** Save time with instant solutions for right angles, rafters, stairs, slopes, and complex layouts—engineered for pros who demand accuracy on-site. - • **Durability Meets Convenience:** Protected by a shock, dust, and moisture-resistant Armadillo Gear case, this calculator thrives in tough jobsite conditions. ## Overview The Calculated Industries 4065 Construction Master Pro is a professional-grade construction calculator designed for contractors, estimators, builders, and carpenters. It supports quick, accurate calculations and conversions across multiple measurement formats including feet-inch-fractions, decimal feet, yards, and metric. Featuring advanced built-in functions for angles, stairs, rafters, and material estimation, it reduces costly errors and saves time on-site. The device comes with a durable, shock-resistant protective case, a clear 2.6-inch digital display, and includes batteries and bilingual reference guides, making it a reliable daily tool for construction professionals. ## Description From the manufacturer Built-in Time Saving Functions that Provide the Answer to Construction-Math Quick, accurate solutions in the field You’ll be able to work in and convert between all building dimensional formats – metric, yards, feet-inch-fractions – including area and volume. Handheld convenience The Construction Master Pro also includes the ability to custom define your preferences, a 'paperless' tape that lets you review the previous 20 entries to double-check totals, and accumulating memory with three additional memory storage locations. It has an auto shut-off feature that turns the calculator off after about 8 to 12 minutes of non-use. Ready to use This model comes with one Calculated Industries 4065 Construction Master Pro calculator. Plus it comes with an Armadillo Gear protective cover. Additionally, it has a pocket reference guide in English/Spanish. The two LR-44/A76 batteries are included so the calculator has everything you need to start using it. Review: So useful - I am really glad that I bought this and relieved that I could buy it in the UK. If you work in construction it would make your life easier. It takes some getting used to the range of functions however if you are a joiner the stair function and traditional cut roof functions are great. You can input metric or imperial although the inputs are more logical when done in imperial and use the American phrases for roofing and framing. It has a good instruction booklet however the you tube channel is the best resource. The quality seems to be very good but came with a tough case too. Well worth the money. Review: Good purchase - Does exactly what it says it will. Really helpful ## Features - SOLVE ALL YOUR DIMENSIONAL MATH quickly and accurately with the award-winning CM Pro construction calculator’s powerful built-in solutions for completing layouts, plans, bids, estimates and more, directly in the building units you prefer - LETS YOU EFFORTLESSLY WORK IN AND CONVERT between all common building dimension formats: feet-inch-fractions, decimal feet-inches, yards and METRIC -- including area and volume. Plus weight-per-volume and D:M:S to decimal degree conversions too - TIME-SAVING BUILT-IN FUNCTIONS for right angles give you instant solutions for square-ups, rafters (hip, valley, jacks), rake-walls, slopes, angles and more. Plus complete stair layout, advanced solutions for arcs, arches, circles, columns and more - PREVENTS COSTLY MATERIAL WASTE with built-in solutions for roofing, drywall, studs, blocks, concrete footings and board-feet lumber estimating. Plus compound miter functions help you avoid errors when working with crown molding and other pricey millwork - INVALUABLE' TOOL PAYS FOR ITSELF DAILY by reducing headaches, saving time and preventing expensive material errors on all your projects, from the office to the field. Comes with a rugged shock, dust and moisture-resistant Armadillo Gear protective case, pocket reference guides in English and Spanish, two LR44 long-life batteries and a full one-year limited warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0007Q3RGQ | | Best Sellers Rank | 149,789 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 182 in Scientific Calculators | | Brand | Calculated Industries | | Brand Name | Calculated Industries | | Calculator Type | Construction/Building | | Colour | Silver | | Compatible Devices | Calculator | | Country of Origin | China | | Customer Reviews | 4.8 out of 5 stars 4,744 Reviews | | Display Type | Digital | | Enclosure Material | Plastic | | Global Trade Identification Number | 00098584040659 | | Item Dimensions L x W | 14.6L x 7.6W centimetres | | Item Weight | 231 g | | Manufacturer | Calculated Industries | | Manufacturer Part Number | 4065 | | Model Name | 4065 | | Model Number | 4065 | | Number of Batteries | 2 LR44 batteries required. (included) | | Number of batteries | 2 LR44 batteries required. (included) | | Power Source | Battery Powered | | Power source | Battery Powered | | Product Warranty | 1 year warranty | | Screen Size | 2.6 Inches | | Screen size | 2.6 Inches | | UPC | 796084327231 787718482709 702658630553 098584000295 767872160125 780320411143 098584040659 700580266321 733353104988 | | Unit Count | 1.0 count | ## Product Details - **Brand:** Calculated Industries - **Calculator Type:** Construction/Building - **Colour:** Silver - **Compatible devices:** Calculator - **Material:** Plastic - **Model name:** 4065 - **Number of batteries:** 2 LR44 batteries required. (included) - **Power source:** Battery Powered - **Product dimensions:** 14.6L x 7.6W centimetres - **Screen size:** 2.6 Inches ## Images ![Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Metric Calculator for Contractors, Estimators, Builders, Framers, Remoders and Carpenters | Advanced Construction Math, Feet-Inch-Fractions, For Contractors, Estimators, Builders - Image 1](https://m.media-amazon.com/images/I/71M5jQzqpsL.jpg) ![Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Metric Calculator for Contractors, Estimators, Builders, Framers, Remoders and Carpenters | Advanced Construction Math, Feet-Inch-Fractions, For Contractors, Estimators, Builders - Image 2](https://m.media-amazon.com/images/I/71xGh4iaoZL.jpg) ![Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Metric Calculator for Contractors, Estimators, Builders, Framers, Remoders and Carpenters | Advanced Construction Math, Feet-Inch-Fractions, For Contractors, Estimators, Builders - Image 3](https://m.media-amazon.com/images/I/71aOHXFQJqL.jpg) ![Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Metric Calculator for Contractors, Estimators, Builders, Framers, Remoders and Carpenters | Advanced Construction Math, Feet-Inch-Fractions, For Contractors, Estimators, Builders - Image 4](https://m.media-amazon.com/images/I/71X5yPGquXL.jpg) ![Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Metric Calculator for Contractors, Estimators, Builders, Framers, Remoders and Carpenters | Advanced Construction Math, Feet-Inch-Fractions, For Contractors, Estimators, Builders - Image 5](https://m.media-amazon.com/images/I/61M0b8OGmbL.jpg) ## Questions & Answers **Q: Looking for gift for roofer husband who just got licensed. Is this a good tool for a roofer?** A: I got this for my husband and he tells me every time he uses it how much he loves it. It does everything that he needs. One of the best gifts ever. I use it a lot myself, so hope he will get me one soon. **Q: I have a older version...maybe 5 yrs? Is this one more advanced?** A: Thanks for your question. There have been no significant changes to the Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Calculator in the last 5 years other than the addition of the Armadillo Gear as standard. If you have one that is no longer working, you can send it in for repair. **Q: Does the CI 4065 pro delivered have an orange back or black back?** A: the calculator it's self has a black back, i got mine with the armadillo gear cover and the main body including the back is orange but the flip cover face is a dark graykevin **Q: Will it tell me the amount of concrete i need for a slab?** A: Thanks for your question. The Calculated Industries Construction Master Pro Calculator will calculate cubic yards using the Length Width and Height keys. This is a great all around Construction Calculator, however if you are dealing primarily in concrete you might want to check out the Calculated Industries ConcreteCalc Pro as it has advanced rebar and column functionality. Here is the link: https://www.amazon.com/Calculated-Industries-ConcreteCalc-4225-Calculator/dp/B000VKD4B6/ref=sr_1_1?ie=UTF8&qid=1536678826&sr=8-1&keywords=concrete+calculator ## Customer Reviews ### ⭐⭐⭐⭐⭐ So useful *by C***N on 18 February 2025* I am really glad that I bought this and relieved that I could buy it in the UK. If you work in construction it would make your life easier. It takes some getting used to the range of functions however if you are a joiner the stair function and traditional cut roof functions are great. You can input metric or imperial although the inputs are more logical when done in imperial and use the American phrases for roofing and framing. It has a good instruction booklet however the you tube channel is the best resource. The quality seems to be very good but came with a tough case too. Well worth the money. ### ⭐⭐⭐⭐⭐ Good purchase *by C***B on 29 May 2024* Does exactly what it says it will. Really helpful ### ⭐⭐⭐⭐⭐ Construction master *by A***W on 23 August 2020* Great item as described ## Frequently Bought Together - Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Calculator for Contractors, Estimators, Builders, Framers, Remodelers, Renovators and Carpenters - Aproca Hard Storage Travel Case, for Calculated Industries 4065 4080 Construction Master Pro Calculator (Case Only) - Calculated Industries 2140 Construction Master Pro Workbook and Study Guide | 4 Comprehensive Sections | Site Development | Footings, Slabs, Walls | Framing | Finishing |Practice Problems, Answers --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.om/products/54813183-calculated-industries-4065-construction-master-pro-advanced-construction-math-feet](https://www.desertcart.com.om/products/54813183-calculated-industries-4065-construction-master-pro-advanced-construction-math-feet) --- *Product available on Desertcart Oman* *Store origin: OM* *Last updated: 2026-07-09*