Best Grey Calculators in 2026
Daisy
Last Updated: Feb 7, 2026
Daisy
Last Updated: Feb 7, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
SOLVE YOUR DIMENSIONAL MATH quickly and accurately with the award-winning CM Pro Trig construction calculator’s powerful built-in solutions for completing layouts; and full trig functions with sine, cosine, tangent, arcsine, arccosine and arctangent
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
HELPS YOU PREVENT COSTLY MATERIAL WASTE with built-in solutions for roofing, drywall, studs, blocks, concrete footings and board-feet lumber estimating. Plus compound miter functions help avoid error when working with crown molding and other millwork
INVALUABLE' TOOL PAYS FOR ITSELF by reducing headaches, saving time and preventing expensive material errors on your projects, in the office or the field. Comes with a rugged shock, dust and moisture-resistant Armadillo Gear protective case, pocket reference guides in English and Spanish, two long-life batteries and a full 1-year limited
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ❌ |
Product 1: SOLVE YOUR DIMENSIONAL MATH quickly and accurately with the award-winning CM Pro Trig construction calculator’s powerful built-in solutions for completing layouts; and full trig functions with sine, cosine, tangent, arcsine, arccosine and arctangent
Product 1: 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
Product 1: 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
Product 1: HELPS YOU PREVENT COSTLY MATERIAL WASTE with built-in solutions for roofing, drywall, studs, blocks, concrete footings and board-feet lumber estimating. Plus compound miter functions help avoid error when working with crown molding and other millwork
Product 2: SOLVE ALL YOUR DIMENSIONAL MATH quickly and accurately with the award-winning CM Pro-Desktop construction calculator’s powerful built-in solutions for building; and full trig functions with sine, cosine, tangent, arcsine, arccosine and arctangent
Product 2: 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
Product 2: 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
Product 2: HELPS YOU PREVENT COSTLY MATERIAL WASTE with built-in solutions for roofing, drywall, studs, blocks, concrete footings and board-feet lumber estimating. Plus compound miter functions help avoid errors when working with crown molding and other millwork
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
THE PERFECT GIFT FOR THOSE THAT HATE MATH BUT LOVE TO COOK – solves all your kitchen math quickly and easily. Simply enter your quantity and label the units, then add, subtract, multiply or divide e.g., 1-1/4 tsp x 7 or 3-1/3 cups minus 11-1/2 dry oz. No more "guesstimating" on ingredient quantities!
EASILY WORKS IN AND CONVERTS BETWEEN all culinary units of weight, volume, liquids, dry weights, temperatures. Including US decimals or fractions (i.e., 1/3 tsp) and metric units for converting foreign recipes or old-world cookbooks (Note Gallon is US based)
ACCURATELY SCALES YOUR RECIPES UP OR DOWN in seconds! Whether you're scaling recipes up to feed a dinner party for 22 or scaling down for just the two of you, one press of a button gives you the adjusted quantity in the units that make the most sense. Plus, you can scale for number of servings, portion sizes, or both.
AND TWO MULTI-FUNCTION DIGITAL TIMERS with alarms are built right in so you can keep track of cooking times in the background. You can never have too many timers when the oven and stove are full of simmering dishes. Timers count up or down.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
EASILY CONVERT between dimensional formats including U.S. Imperial and metric to help you work with material and plans from Global suppliers regardless of the measuring units used; with a push of a button The calculator can change them into the measurement types you prefer to work in
HELPS YOU CALCULATE jobsite solutions in Metric and Imperial units using linear, Area and volume measurements; Measure Master Pro makes these calculations even easier because you enter the numbers just as you say them; simply Factor in your waste allowances and you’ll have just what you need to build
BUILT-IN CIRCULAR MATH gives you formula-free circles, areas, circumference, radius and arcs to layout a circular driveway, get requirements for a curved deck or determine measurements for a gazebo arch; with this information you can build according to plan
SOLVE UNIT COST AND PRICING by finding total material requirements then solve for total cost by entering unit cost; great for estimating. And the built-in paperless tape lets you double-check Your entries for accuracy – without having to re-enter values
YOUR DAILY PROBLEM-SOLVER TOOL lets you handle anything that comes your way, dimensional Math, unit conversions, board feet material estimating and more. And it comes with a protective hard slide cover, easy-to-follow pocket reference guides in English and Spanish, long-life batteries and a 1-year warranty
Work in and convert between any building dimensions, including metric
Linear, area and volume measurements
Find weight and weight per volume
Instant solutions for circle area, circumference, arcs and more
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
CONVERT MORE THAN 70 UNITS in U. S. Imperial, metric and other units of measure for reliable data input and conversion; enter measurements just like you say them; you can enter data in various formats and change solutions to preferred read out; you can enter feet, inch, fraction or decimal inch, other units are entered in whole or decimal numbers
GIVES YOU OVER 500 CONVERSION COMBINATIONS with no need for complex scientific calculators or memorizing conversion formulas; for your ease the most common 86 measuring units are included as set dedicated function keys; you can use the preference setting to configure the calculator to work like you want and keep your preferences until a full reset
EASILY WORK IN AND CONVERT BETWEEN measurement formats by pressing the conversion key and then the desired unit key, it is that easy and accurate. Then you can add, subtract, multiply and divide your results to get to the solution you need.
TIME-SAVING BUILT-IN CONVERSIONS give you all the most common units you need to get your job completed in an accurate fashion; whether it’s a linear, area or volume dimensional item, weight, temperatures, velocity, flow rate, pressure, torque, energy, power or another calculation you can convert it so it matches your workflow and project requirements
INVALUABLE' TOOL PAYS FOR ITSELF DAILY by reducing headaches, saving time, improving conversion accuracy and preventing expensive errors on all your calculations from large to nano units; comes with a protective slide cover, easy-to-follow quick reference guide and handy pocket reference guide, long-life battery and a full one-year limited
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Work in Centimetres and Metres including square and cubic formats.
BTU function can convert BTU value to Kilowatt Hours for electric radiators and gas fires. Also calculates BTUs required to heat an entered volume.
The ProjectCalc Plus MX has metric-based default values for a wide range of projects. All default values can be changed by the user.
Square-ups--Easily solves right triangle problems. Finds the diagonal, so you can "square up" to make sure an area is perfectly square (e.g., for pouring concrete pads).
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Sparkfish | 9.94 | ✅ | ✅ | ✅ |
Great for do-it-yourselfers, woodworkers, hobbyists, decorators and gardeners
Enter feet-inch-fractions without changing to decimals
Use it to estimate quantities and costs for paint, concrete, Tile, wallpaper and carpet
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ❌ |
Package Weight: 0.6 lbs
Product Type: Calculator
Package Quantity: 1
1 of Staedtler 12-Inches Architect Triangular Scale
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Nygmat | 9.69 | ❌ | ❌ | ❌ |
Linear, area and volume solutions: convert dimensions, including metric
Complete rafter, roof and framing solutions, hip/valley, jacks and rake walls
Stair solutions are nearly automatic; risers, treads, stringer, incline
Built-in right-angle solutions; automatic square-ups
Circular and arc calculations; areas, diameters, circumference
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ❌ |
Comes with a large digits on easy to see multi-position tilt display LCD, easy-to-follow user’s guide, plus a pocket reference guide
Package Quantity: 1
4065 Construction Master Pro Advanced Construction Math Feet inch Fraction Calculator for Contractors, Estimators, Builders, Framers, Remodelers, Renovators and Carpenters
Product type: CALCULATOR
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
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
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ❌ |
Product 1: SOLVE ALL YOUR DIMENSIONAL MATH quickly and accurately with the award-winning CM Pro-Desktop construction calculator’s powerful built-in solutions for building; and full trig functions with sine, cosine, tangent, arcsine, arccosine and arctangent
Product 1: 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
Product 1: 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
Product 1: HELPS YOU PREVENT COSTLY MATERIAL WASTE with built-in solutions for roofing, drywall, studs, blocks, concrete footings and board-feet lumber estimating. Plus compound miter functions help avoid errors when working with crown molding and other millwork
Product 2: THE ESSENTIAL GUIDE to unlocking the power of Construction Master Pro; divided into 4 sections, it covers from site prep to finish work; learn step-by-step how to go beyond the basics and use this calculator’s advanced construction-math capabilities
Product 2: SEE HOW TO CALCULATE MOVING DIRT in the section Site Development that explains how to scale linear distances and how to estimate areas; it also shows how to determine calculations for excavation and fill and how to establish grade lines
Product 2: FIGURE OUT VOLUME FOR CONCRETE POURS on continuous footings, discrete footings, slabs and foundation walls, learn to calculate concrete requirements in square or circular forms, or number of concrete block required so you don’t run short on a pour
Product 2: LEARN TO SOLVE COMMON FRAMING PROBLEMS with the Construction Master Pro, get answers for framing and see how to determine measurements for walls, rafter systems and stair layouts; you will also cover how to get material requirements and project costs
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Calculated Industries | 12 |
We've carried out a comprehensive analysis of 3,157 reviews on calculators, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select calculators priced around $63.80, with top brands including and
Our team of expert editors reviewed these high-quality items and handpicked the top 12 calculators for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .
We are dedicated to assisting our users in finding the right calculators Products based on their needs, saving them considerable time when choosing which calculators to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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