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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…

Living in Boston, I have spent many long nights in drafty study halls. I remember once my math tool just quit on me during a big project.…

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.…

Last Tuesday morning in Denver, I stood there in my workout gear at 6:15 AM. Fresh coffee sat on the counter. I pressed the button on my…

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…

Keeping your pool water balanced doesn’t need to feel like rocket science. If your pool’s alkalinity is off, you may notice cloudy water, itchy skin, or even…

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)…

Helping a student in Denver fix their math gear last week reminded me of my own study scares. It is quite a shock when your screen goes…

Last Sunday night in Seattle, rain drummed on the windows. I finally had an hour to walk. Shoes tied. Playlist ready. I pressed the power button on…

Staying in Stuttgart for a work trip reminded me how much I value tools that stay reliable. I found my old school math kit in a box,…

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…

Last Monday morning in Portland. Coffee still hot. Email inbox already full. I stepped on my under desk treadmill, pressed the remote power button, and… nothing. My…