The UtilityApps Blog
Deep dives, calculators, and practical tutorials for the tools you actually use. Free, no signup, written by people who use them daily.
DEV-MID · rectangleHow to calculate your age in days, hours and minutes — the method, how leap years are handled, and the surprising milestone numbers hiding in your age.
How to calculate percentage increase and decrease with the exact formula and real examples — salary raises, discounts, investment returns and price changes.
The three percentage problems you actually face — percent of a number, percent change, and reverse percentages — with formulas, examples and quick mental shortcuts.
Tip math, sales tax, percent change, percent off, exam scores, and more — with the formulas and a sanity-check shortcut for each.