Trends & guides
The Journal
Practical, current writing on the numbers that matter — rates, taxes, health metrics, and the math behind everyday decisions. Every piece links back to the calculators that put it to work.
📊 Percent vs. Percentage Points: The Difference That Changes the Story
A rate going from 2% to 5% rose either '3 points' or '150%' — same event, wildly different headlines. Here's how to tell them apart and never be misled again.
July 29, 2026 · 3 min read
🏠 APR vs. Interest Rate: What Your Mortgage Number Actually Means
Two rates sit on every mortgage quote, and they're almost never the same number. Here's what each one includes, and which to trust when you compare offers.
July 28, 2026 · 3 min read
❤️ Beyond BMI: A Clearer Way to Read Your Body Composition
BMI is a fast screen, not a diagnosis. Here's what it gets right, where it misleads, and the simple measurements that tell you far more.
July 21, 2026 · 2 min read
🧾 The Fair Way to Split a Bill: Tips, Tax, and Uneven Shares
Splitting evenly is easy until someone only had a salad. Here's how to handle tip, tax, and mismatched orders without anyone feeling short-changed.
July 14, 2026 · 2 min read