Free Online Calculators That Are Actually Easy
Quick, accurate tools for health, study and fun. No sign-up, no downloads, and your numbers never leave your device.
BMI Calculator
Check your body mass index in kg/cm or lb/ft and see your healthy weight range.
GPA Calculator
Work out your semester and cumulative GPA on the 4.0 scale, weighted or unweighted.
CGPA Calculator
Combine semester SGPAs into your CGPA and convert CGPA to percentage.
Zodiac Sign Calculator
Find your star sign and Chinese zodiac animal from your birthday.
Zodiac Compatibility
See how two star signs match in love and friendship.
Age Calculator
Get your exact age in years, months and days, plus your next birthday.
Health calculators
Our BMI calculator works in both metric (kg and cm) and imperial (pounds, feet and inches) units. Besides your body mass index, it shows the healthy weight range for your height using the World Health Organization’s adult categories, and explains what the number can and cannot tell you about your health.
Student calculators
Students use the GPA calculator to turn letter grades and credit hours into a grade point average on the 4.0 scale, with optional honors and AP weighting for high school. If your university reports results as SGPA and CGPA, the CGPA calculator combines your semesters and converts the result to a percentage.
Astrology and fun tools
Not sure whether a birthday on the 20th makes you a Pisces or an Aries? The zodiac sign calculator finds your sun sign, element and Chinese zodiac animal. Then check how two signs get along with the zodiac compatibility calculator. These tools are for entertainment.
Date and time tools
The age calculator gives your exact age in years, months and days, counts the days until your next birthday, and handles leap-year birthdays correctly.
Why use ToolsCloset?
- Private: every calculation runs in your browser. We don’t store what you type.
- Explained: each tool shows the formula it uses, with a worked example, so you can check the result yourself.
- Fast on any phone: small pages with no heavy frameworks.
ToolsCloset is built and maintained by Shah Rukh, a software developer from Lahore, Pakistan. Read more about how the tools are made.