As a calculator expert, I’ve spent years testing models across brands like Casio, TI, and HP. When I picked up the CATIGA CS229 Scientific Calculator, I was…
The simplest way to calculate your max heart rate (HRmax) is 220 minus your age. But other formulas like the Tanaka formula (208 – 0.7 × age)…
If you’re into fitness, you’ve likely heard the term VO2 max. But what does it actually mean, and how do you calculate it? In simple terms, VO2…
In the world of finance and investment analysis, one of the most common questions is: How long will it take to recover my money? That’s exactly what…
If you’ve ever stepped into a gym and wondered, “How do I calculate my one rep max?”, you’re not alone. Whether it’s the bench press, squat, or…
If you’re diving into fitness, whether it’s for weight loss, building endurance, or just staying heart-healthy, understanding how to calculate maximum heart rate (max HR or HRmax)…
In the world of wearable technology, few features create as much buzz as the Apple Watch VO2 max estimation. If you’ve ever asked yourself, “How does Apple…
Do you ever ask yourself, “What is my suit size?” A suit size calculator gives you a quick answer. It’s a smart online tool that helps you…
When buying or selling a home, one big question always comes up: How does the appraisal calculate square footage?It’s not as simple as pulling numbers from public…
Do you want to know how to calculate a golf handicap? I remember when I first started playing golf, I had no clue what a handicap meant.…
Real Using CATIGA 12 Digit Thermal Printing Calculator Review
In Berlin, I’ve tested more desktop calculators than I can count, but the CATIGA 12 Digit Thermal Printing Calculator (Model SP-2401) stood out the moment I powered it up. It’s one of those rare machines that make you pause and…
Why I Trust HP Prime Scientific Graphing Calculator!
Here in Austin, Texas, I’ve spent years testing and reviewing calculators that promise to make complex math easier. As someone who’s used everything from entry-level Casios to advanced TI models. The HP Prime Scientific Graphing Calculator genuinely surprised me. Its…
Sharp EL-1197PIII Heavy Duty Color Printing Calculator Review
Out here in Austin, Texas, I’ve spent years testing calculators for speed, accuracy, and comfort in real office settings. As a calculator expert who’s reviewed everything from scientific to financial models, few tools impressed me as much as the Sharp…
Why HP 17BII+ Financial Scientific Calculator is Truly Paramount!
From Munich, Germany, Testing calculators has been my passion for years. From scientific models to heavy-duty financial ones, I’ve used them all in classrooms, offices, and client meetings. When I first picked up the HP 17BII+ Financial Calculator, it felt like…
Casio FX-991EX Advanced Scientific Calculator Tested Review
In Chicago, I’ve spent years testing, reviewing, and teaching with scientific calculators, from the old Casio FX-82 to the newest FX-991EX. As a calculator expert who often mentors engineering and science students, I’ve seen how the right calculator can turn…
My TI-83 Plus Graphing Calculator Amazing Math Secret Tool
As a calculator expert who’s tested everything from entry-level scientific models to advanced graphing tools. I’ve spent months with the Texas Instruments TI-83 Plus Graphing Calculator. It’s one of those iconic tools that’s been trusted in classrooms and labs across…