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
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, 2026
Image Tools
Looking for the best free image compressor? We compared five tools head-to-head — TinyPNG, Squoosh, Compressor.io, ShortPixel, and UtilityApps — for quality, privacy, and speed.
7 min · May 9, 2026
Image Tools
The fastest free way to remove the background from any photo. Step-by-step instructions, side-by-side tool comparison, and the pitfalls to avoid.
7 min · May 6, 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