Calculator Tools
Age Calculator
Calculate exact age in years, months, weeks, and days between any two dates with timezone-aware accuracy.
1236 users/month
Standalone
Solve every percentage problem in seconds: percent of a number, percent change, percent increase or decrease, tip and discount math, and grade calculations. Includes step-by-step explanations so you can learn the formula, not just the answer.
DEV-TOP · horizontalCalculator
Three of the most common percentage problems, in one calculator.
Result
16
20% of 80 = 16
DEV-MID · rectangleBuilt for everyday work
Percentage Calculator runs on a dedicated subdomain. We never log your inputs.
No signup, no upload queue, no captcha. Use Percentage Calculator and move on with your day.
Mobile, tablet, desktop, and offline (PWA). Install once, use everywhere.
No premium tier, no per-use fees. Optional ads keep the lights on; you keep the tool.
Getting started
Percentage Calculator loads instantly on this page — no download or signup. It runs on a dedicated, sandboxed subdomain inside the embed below.
Type, paste, or upload what you need. Calculate percentages, percent change, percent off, and percent of any number with a free online tool.
Use the result right away, copy it to your clipboard, or bookmark this page so you can come back without searching.
Calculator Tools
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, 2026
Calculator Tools
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, 2026
Calculator Tools
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, 2026
Every other calculator tool — jump straight in.
Calculator Tools
Calculate exact age in years, months, weeks, and days between any two dates with timezone-aware accuracy.
Calculator Tools
Split bills and calculate tips by percentage, party size, and country tipping customs in seconds.
Calculator Tools
Calculate weighted, unweighted, and cumulative GPA on 4.0 and 5.0 scales for high school and college.
DEV-BOTTOM · horizontalFrequently asked
More from UtilityApps