The UtilityApps Blog
Tools that save time and money — explained
Deep dives, calculators, and practical tutorials for the tools you actually use. Free, no signup, written by people who use them daily.
How Much to Tip: A Country-by-Country Tipping Guide for 2026
How much to tip around the world in 2026 — a country-by-country guide covering restaurants, taxis and hotels, plus where tipping is not expected at all.
4 min · Jun 15, 2026Daniel M.How to Calculate Your Age in Days, Hours, Minutes (Surprising Numbers)
How 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.
4 min · Jun 4, 2026Daniel M.How to Calculate Percentage Increase and Decrease (With Real Examples)
How to calculate percentage increase and decrease with the exact formula and real examples — salary raises, discounts, investment returns and price changes.
4 min · May 25, 2026Daniel M.How to Calculate a Percentage (Every Formula Explained)
The three percentage problems you actually face — percent of a number, percent change, and reverse percentages — with formulas, examples and quick mental shortcuts.
4 min · May 9, 2026Daniel M.How to Calculate Percentages (10 Real-World Examples)
Tip math, sales tax, percent change, percent off, exam scores, and more — with the formulas and a sanity-check shortcut for each.
7 min · Mar 16, 2026Daniel M.