Blog
Guides on screen resolution, pixel density, unit conversions, and the real-world size of everyday objects.
Metric vs. Imperial: The Everyday Conversions You Actually Need
Temperature, length, weight, and volume — the four places Metric and Imperial actually collide in daily life, with the practical formulas and quick-reference numbers to convert between them.
MM, CM, Inches, and Feet: A Practical Guide to When to Use Each
Building hardware means living in a hybrid measurement reality — mm for PCBs, inches for screens, feet for cable runs. When to use each unit, and the only three conversions you actually need.
1 Inch Is Exactly 2.54 cm — So Why Does the US Still Use Inches?
The US isn't ideologically attached to inches — it's economics. The legislative history behind America's imperial holdout, from the 1866 Metric Act to the 1982 death of the US Metric Board.
MM to Inches: A Quick Reference Table
1 millimeter is exactly 0.03937 inches. A quick mm-to-inches reference table with decimal and nearest-1/64-inch fraction equivalents, plus a live calculator.
Inches to Centimeters Conversion Chart (With Real-World Examples)
1 inch is exactly 2.54 centimeters. A quick-reference conversion chart with everyday object comparisons, plus an interactive calculator for any measurement.
How to Find Your Screen's True Resolution and Calculate Its Real PPI
The sticker on your monitor lies once OS scaling is involved. Here's how to find your display's actual output resolution on Windows, macOS, and Linux, then calculate its true PPI.
The Illusion of the CSS Inch: Why On-Screen Rulers Break (and How to Fix Them)
Browsers lie about physical size. Here's why the CSS inch, browser zoom, and OS display scaling all break on-screen measurement — and the calibration architecture that actually fixes it.
PPI vs. DPI: What's the Difference, and Why Your Screen Can't Measure Itself
PPI and DPI aren't interchangeable — one describes screen pixel density, the other printer dot density. Here's the real difference, why CSS inches lie, and how proper on-screen calibration actually works.
Stop Confusing Resolution with Size: How Screen Dimensions Actually Work
4K doesn't tell you how big a screen is. Here's how resolution, physical size, and pixel density actually relate — and how to pick the right combination.