🏡 Master real estate finance like a pro—because every second counts!
BUILT TO LAST - Durable design backed by a 1-year warranty ensures your calculator works as hard as you do.
CLOSE DEALS FASTER - Instantly solve payments, amortizations, ARMs, and combo loans to impress clients on the spot.
VERSATILE LOAN OPTIONS - Calculate complex loans like 80:10:10 combos or interest-only payments with ease.
PORTABLE PROFESSIONALISM - Lightweight and battery-powered for confident financial answers anywhere—office, car, or open house.
PRECISION AT YOUR FINGERTIPS - Clearly labeled keys speak real estate finance fluently—no guesswork, just results.
The Calculated Industries 3405 Real Estate Master IIIx is a compact, battery-powered finance calculator designed specifically for residential real estate professionals. Featuring dedicated, clearly labeled function keys, it quickly solves payments, amortizations, adjustable-rate mortgages, and combo loans, enabling faster client decisions and more closed deals. Lightweight and portable, it offers reliable performance backed by a 1-year warranty.
Specifications
Manufacturer
Calculated Industries
Part Number
3405
Item Weight
3.21 ounces
Product Dimensions
5.75 x 3 x 0.6 inches
Country of Origin
China
Item model number
3405
Batteries
1 Lithium Metal batteries required. (included)
Is Discontinued By Manufacturer
No
Size
Calculated Industries 3405 Real Estate Master IIIX Real Estate Finance Calculator
Color
Silver
Style
Calculated Industries 3405 Real Estate Master IIIX Real Estate Finance Calculator
Material
Plastic
Power Source
Battery Powered
Voltage
1.5 Volts
Item Package Quantity
1
Display Style
LCD
Included Components
Calculated Industries 3405 Real Estate Master IIIX Real Estate Finance Calculator
Batteries Included?
Yes
Batteries Required?
Yes
Battery Cell Type
Silver-Zinc
Warranty Description
Calculated Industries warrants product against defects in materials and workmanship for a period of 1 year. If a defect exists during the warranty period, CI at its option will either repair or replace the product at no charge
Have a Question? See What Others Asked
Can you tell me what kind of batteries this takes ?
will it display/perform total payments of principal and interest?
Bought this June 27,2021. Frozen. Could it be the batteries?
Is this product made in China?
Reviews
4.7
All from verified purchases
E**S
The Best Quality Real Estate Calculators Are From Calculated Industries. The 5 I have Are Stick Working after 30 Years of Use
I just adore this calculator. I have been a real estate broker for 30 years and think that this calculator is more practical that the HP calculators that were so popular in the 80's. It is easy to use and gives me what my clients need to determine their mortgage payments, down payments needed with interest rates. You will not go wrong with this real estate calculator. I have bought 5 of them through the years with each one having improvements and more features. This is the best one and I like the others. Buy it! I have purchased tons and tons of calculators and this is by far the best in quality that works. I have 4 other real estate calculators from this company that are still working well with only battery changes, but being high-tech I like to have the new models when they come out, not to mention that I have one in my purse, one at home in my drawer, 2 at the office and now this one.. I Still have my first model the Classic and it is 30 years old to date. None of them have needed any repairs and the only thing I have to do is change the batteries and this is not very often, like years go by before I have to do so. So I encourage anyone to buy Calculated Industries calculators, whether you are a real estate agent or not, there is always a specialty calculator for you.I am so sick of those cheap calculators that do not stand the test of time. Calculated Industries has my loyalty for life.
W**M
Simple, Amazing
As I decide I was going to go back through my entire purchase history to write reviews for other potential customers, I decided to stay away from two types of reviews: personal electronics (because the industry changes so rapidly and my review, although still valid for that product, would be seen by exponentially less people as months go on), and personal items (because the world doesn't need to know why I love a brand of adhesive bandages used to prevent chafing nipples when I run).I decided to write a review on this product, however, even though it closely fits into the "personal electronics" category.This is a simple calculator that anyone (yes ANYONE) should buy. It brings the complexity of time-value-of-money to any layman's hands. I actually first saw this calculator when I went shopping for my first mortgage. I saw the loan officer using this and was able to spit hypothetical numbers at me faster than I could comprehend them. I went home, bought this, and was armed for our next meeting.Pros:1. FANTASTIC customer support. Even after reading the manual, I had a question that I couldn't figure the answer to. I emailed the company and within a few days received a complete answer. It was nice I never received an automated email from them, nor did I get an email that gave me a bunch of links to where I could find the answer. The email I received was from a representative who knew the right answer and wrote the email as if to talk me through what to do. At no time did I feel stupid or that I was bothering them. This was impressive.2. Simple calculator combined with an extensive time-value-to-money calculator. Many specialty calculators (graphing, for example) have so many buttons that it would confuse the casual user, making him feel as if he only uses 10% of the calculator's potential at any given time).3. Easy to learn. I took about 20 minutes and sat down when I first got this to learn how it works. I am of average intelligence and simply committed to learning this. The ease-of-use allowed me to talk on the phone with a loan officer many times and crunch numbers with her -- throwing numbers back and forth.4. There is a small pocket built into the back of the calculator where the user manual sits so that if any information is forgotten, it can quickly be referenced. This pocket tucks the manual away nicely so that it doesn't get torn.5. iOS app with the software to run this same calculator. I still prefer having the calculator in my hand, though. The option is available, though.6. This may seem petty, but I love the 000 button. It saves time from typing three zeros all the time. One wold think it is silly to write this as a "pro" but I find this button very helpful.Cons:1. Although there are one or two features I would like to see added (such as a yearly amortization schedule - for some reason, I can only get it to show me monthly), I can honestly not think of any cons at this time.2. Sometimes I get frustrated with the payments per year option and how to change it. Admittedly, this is my fault.Bottom line: Essential for the casual user through the professional banker. If you are going to spring for a simple calculator, get this one (you won't regret it).
A**R
Great calculator
Easy to use
A**R
A realtors must have
Great for real estate. A must have
H**N
Great business tool, at a great price!
Once again, got exactly what I wanted at a great price. This product is sold at a local retail outlet for $85 (with accompanying DVD). There are great Youtube clips for video tutorial that are FREE! I needed this for an upcoming state exam, it's one of only 3 acceptable models allowed. Got it in 2 days & it's got every function that I need (plus a few that I haven't tried yet).
C**K
This worked just like advertised
This works well. It's easy to use and easy to learn.
Common Questions
Trustpilot
TrustScore 4.5 | 7,300+ reviews
Neha S.
Excellent communication throughout the order process. Product is perfect.
2 weeks ago
Ravi S.
I loved the variety of products available. Will definitely shop again.
A financial calculator designed for real estate and mortgage professionals, the Real Estate Master quickly performs nearly every post-qualifying real estate calculation right there in front of the client to help boost sales. The device performs all calculations for PITI payment solutions, amortization scales, combination loans, adjustable rate mortgages, rent-versus-buy comparisons, and much more. Ideal for new agents and professionals who don’t require buyer-qualifying functions, the Real Estate Master IIIx puts answers to all your financing problems at your fingertips! Carry it with you on appointments with clients, and help them with instant answers that will give them the confidence to buy that home!
The Real Estate Master calculates mortgage payments, terms, interest, PITI payments, future value, as well as purchase price, and down payment figures. Permanently store local property tax and property insurance rates for customized calculations that will help buyers and sellers develop an informative financial outlook. The Real Estate Master even figures mortgage insurance. And, the device performs numerous \"what-if\" calculations from variables like purchase price, down payment amount, and loan amount financing—informative calculations that open the door to more sales. An incredibly versatile device, the Real Estate Master lets you enter down payment figures either as dollar amounts or as percentage of price for a clearer picture of leveraging power. Plus, the Real Estate Master determines principal and interest paid for any single payment or any range of payments—including remaining balances! With the push of a button, this ingenious calculator shows buyers the total lifetime interest savings and term reduction of loans—bi-weekly— as well as monthly. One more thing and then we'll have to stop there… The Real Estate Master also calculates best- and worst-case scenarios for any adjustable rate loan. No figure too tough for the Real Estate Master, get one today and you'll become one, too.The Pocket User Guide stores conveniently inside the back of the unit in a prefitted slot, making it always with you.
Features
Calculate a wide variety of real estate finance problems for boosting buyer confidence
Complete taxes and insurance for true PITI payments
Automatic sales price and down payment calculations for smarter home shopping
Easily calculate amortization and balloon payments for a precise forecast
Bi-weekly vs. monthly loan comparisons for clear-cut loan options
Simplify complex ARMs including lifetime cap for accurate assessment
What's in the Box
Protective slide cover
Quick reference guide
Pocket user's guide
Long-life batteries
Full one-year warranty
Specifications
Size: 5.5 x 3.0 x 0.5 inches
Product weight: 3.2 oz.
Power: 3-volt lithium (CR-2032) battery
Battery life: approximately 800 hours usage
Auto shut-off: 8 to 12 minutes
Keypad: 36 keys; soft-touch silicone rubber
User's guide: 64 pp.; 5 x 2.5 inches
Warranty: 1-year limited warranty
Operating temperature: 32 to 130 degrees Farenheit
Display type: LCD segment; 9 digits, with annunciator-legends
","image":["https://m.media-amazon.com/images/I/71rAfOCosJL.jpg","https://m.media-amazon.com/images/I/71Ab+wcbYJL.jpg","https://m.media-amazon.com/images/I/71r-tQBSvBL.jpg","https://m.media-amazon.com/images/I/71DiwcaY0eL.jpg","https://m.media-amazon.com/images/I/81KDuWjZINL.jpg","https://m.media-amazon.com/images/I/810k12r2vuL.jpg","https://m.media-amazon.com/images/I/71Y8SWmEbBL.jpg"],"offers":{"@type":"Offer","priceCurrency":"VUV","price":"15337.00","itemCondition":"https://schema.org/NewCondition","availability":"https://schema.org/InStock","shippingDetails":{"deliveryTime":{"@type":"ShippingDeliveryTime","minValue":5,"maxValue":5,"unitCode":"d"}}},"category":"toolsandhomeimprovement","review":[{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"E***S"},"datePublished":"August 11, 2014","name":"The Best Quality Real Estate Calculators Are From Calculated Industries. The 5 I have Are Stick Working after 30 Years of Use","reviewBody":"I just adore this calculator. I have been a real estate broker for 30 years and think that this calculator is more practical that the HP calculators that were so popular in the 80's. It is easy to use and gives me what my clients need to determine their mortgage payments, down payments needed with interest rates. You will not go wrong with this real estate calculator. I have bought 5 of them through the years with each one having improvements and more features. This is the best one and I like the others. Buy it! I have purchased tons and tons of calculators and this is by far the best in quality that works. I have 4 other real estate calculators from this company that are still working well with only battery changes, but being high-tech I like to have the new models when they come out, not to mention that I have one in my purse, one at home in my drawer, 2 at the office and now this one.. I Still have my first model the Classic and it is 30 years old to date. None of them have needed any repairs and the only thing I have to do is change the batteries and this is not very often, like years go by before I have to do so. So I encourage anyone to buy Calculated Industries calculators, whether you are a real estate agent or not, there is always a specialty calculator for you.I am so sick of those cheap calculators that do not stand the test of time. Calculated Industries has my loyalty for life."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"W***M"},"datePublished":"January 31, 2012","name":"Simple, Amazing","reviewBody":"As I decide I was going to go back through my entire purchase history to write reviews for other potential customers, I decided to stay away from two types of reviews: personal electronics (because the industry changes so rapidly and my review, although still valid for that product, would be seen by exponentially less people as months go on), and personal items (because the world doesn't need to know why I love a brand of adhesive bandages used to prevent chafing nipples when I run).I decided to write a review on this product, however, even though it closely fits into the \"personal electronics\" category.This is a simple calculator that anyone (yes ANYONE) should buy. It brings the complexity of time-value-of-money to any layman's hands. I actually first saw this calculator when I went shopping for my first mortgage. I saw the loan officer using this and was able to spit hypothetical numbers at me faster than I could comprehend them. I went home, bought this, and was armed for our next meeting.Pros:1. FANTASTIC customer support. Even after reading the manual, I had a question that I couldn't figure the answer to. I emailed the company and within a few days received a complete answer. It was nice I never received an automated email from them, nor did I get an email that gave me a bunch of links to where I could find the answer. The email I received was from a representative who knew the right answer and wrote the email as if to talk me through what to do. At no time did I feel stupid or that I was bothering them. This was impressive.2. Simple calculator combined with an extensive time-value-to-money calculator. Many specialty calculators (graphing, for example) have so many buttons that it would confuse the casual user, making him feel as if he only uses 10% of the calculator's potential at any given time).3. Easy to learn. I took about 20 minutes and sat down when I first got this to learn how it works. I am of average intelligence and simply committed to learning this. The ease-of-use allowed me to talk on the phone with a loan officer many times and crunch numbers with her -- throwing numbers back and forth.4. There is a small pocket built into the back of the calculator where the user manual sits so that if any information is forgotten, it can quickly be referenced. This pocket tucks the manual away nicely so that it doesn't get torn.5. iOS app with the software to run this same calculator. I still prefer having the calculator in my hand, though. The option is available, though.6. This may seem petty, but I love the 000 button. It saves time from typing three zeros all the time. One wold think it is silly to write this as a \"pro\" but I find this button very helpful.Cons:1. Although there are one or two features I would like to see added (such as a yearly amortization schedule - for some reason, I can only get it to show me monthly), I can honestly not think of any cons at this time.2. Sometimes I get frustrated with the payments per year option and how to change it. Admittedly, this is my fault.Bottom line: Essential for the casual user through the professional banker. If you are going to spring for a simple calculator, get this one (you won't regret it)."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"A***R"},"datePublished":"April 12, 2025","name":"Great calculator","reviewBody":"Easy to use"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"A***R"},"datePublished":"April 23, 2025","name":"A realtors must have","reviewBody":"Great for real estate. A must have"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"4.0"},"author":{"@type":"Person","name":"H***N"},"datePublished":"July 5, 2014","name":"Great business tool, at a great price!","reviewBody":"Once again, got exactly what I wanted at a great price. This product is sold at a local retail outlet for $85 (with accompanying DVD). There are great Youtube clips for video tutorial that are FREE! I needed this for an upcoming state exam, it's one of only 3 acceptable models allowed. Got it in 2 days & it's got every function that I need (plus a few that I haven't tried yet)."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"C***K"},"datePublished":"April 29, 2025","name":"This worked just like advertised","reviewBody":"This works well. It's easy to use and easy to learn."}],"aggregateRating":{"@type":"AggregateRating","ratingValue":4.833333333333333,"bestRating":5,"ratingCount":6}},{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Can you tell me what kind of batteries this takes ?","acceptedAnswer":{"@type":"Answer","text":"The Calculated Industries 3405 Real Estate Master IIIX takes 2 LR44 (Maxell) or 2 A76 (Energizer) or 2 PX76A (Duracell) batteries."}},{"@type":"Question","name":"will it display/perform total payments of principal and interest?","acceptedAnswer":{"@type":"Answer","text":"Yes it will display the principal and interest payment. It is user friendly"}},{"@type":"Question","name":"Bought this June 27,2021. Frozen. Could it be the batteries?","acceptedAnswer":{"@type":"Answer","text":"Thanks for your question. Have you tried the reset? It sounds like a key might be stuck down. We suggest running your fingers up and down and across all of the keys to free up any key that might be stuck. If neither of the above resolve your issue please call our Customer Care Team at 800-854-8075."}},{"@type":"Question","name":"Is this product made in China?","acceptedAnswer":{"@type":"Answer","text":"CHINA"}}]}]}
