Understanding Your BMI: What the Number Really Means
BMI is a population screen, not a personal verdict. Here's how the number is built, how to read the categories, and where it quietly fails.
6 min readBMR, TDEE, and How Many Calories You Actually Need
Two numbers drive every diet plan. Learn how BMR and TDEE are estimated, how to turn them into a goal, and why they're only a starting point.
7 min readHow Mortgage Amortization Works
Why early payments are almost all interest, when principal finally takes over, and how a little extra each month can save you years.
7 min readSimple vs Compound Interest, Explained
One clause separates a straight line from a curve that accelerates. See how compounding builds fortunes — and drains them on a credit card.
7 min readHow to Calculate ROI (and Read It Correctly)
The basic formula is easy. The traps — ignoring time and risk — are what make a great-looking return misleading. Here's how to use ROI honestly.
6 min readWorking With Percentages: Increase, Decrease, and Reverse
Every percentage problem is the same equation rearranged. Master the three core questions — and the reversal trap that costs people money.
6 min readHEX, RGB, HSL and CMYK: Color Models Explained
Why one color has so many names, what each model is good at, and why a shade that glows on screen can look muddy in print.
6 min readWhat Base64 Is and When You Actually Need It
Base64 is encoding, not encryption — it offers zero security. Here's the real problem it solves, how the conversion works, and when to avoid it.
6 min readAspect Ratios for Photo, Video and Screens
Ratio is shape, not size. Learn how it's calculated, the ratios you'll actually meet, and how to crop or resize without distorting anything.
6 min readHow to Build Strong Passwords You Can Actually Use
The old 'add a symbol' advice is outdated. Length beats complexity — here's what really makes a password strong and a system that works.
6 min readMeasuring Area: Square Footage for Flooring, Paint and Concrete
Get the area right and add the correct waste allowance. The unit traps, awkward shapes, and why depth turns area into volume.
6 min read