DATE & TIME
🎂
Age Calculator
Exact age with zodiac & day of week
📅
Date Difference
Days between dates + add/subtract
⏱️
Time Calculator
Add & subtract hours, convert units
EVERYDAY TOOLS
🧾
Tip Calculator
Tip amount & bill splitting
🏷️
Discount Calculator
Sale price, % off, stacked discounts
⛽
Fuel Cost Calculator
Trip cost & vehicle comparison
💡
Electricity Cost
Appliance running cost calculator
🔄
Unit Converter
Length, weight, temp, volume & more
🏛️
Roman Numerals
Convert Arabic ↔ Roman numerals
EDUCATION
🎓
GPA Calculator
Semester & cumulative GPA on 4.0 scale
📝
Grade Calculator
Weighted grades & final exam needed
🔐
Password Generator
Secure passwords with strength checker