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Everyday Calculators & Tools
Percentages, dates, conversions, and more — free, fast, and no sign-up required.
Percentage Calculator
Mode
What is X% of Y?
X is what % of Y?
% change from X to Y?
Percentage (%)
Number
Calculate
Result
Answer
Age Calculator
Date of Birth
Calculate
Results
Age
Months
Days Old
Next Birthday
Date Difference Calculator
Start Date
End Date
Calculate
Results
Days
Weeks
Months
Years
Time Zone Converter
Time
Date
From Time Zone
Eastern (ET)
Central (CT)
Mountain (MT)
Pacific (PT)
UTC
GMT
IST (India)
JST (Japan)
AEST (Australia)
CET (Central Europe)
To Time Zone
Eastern (ET)
Central (CT)
Mountain (MT)
Pacific (PT)
UTC
GMT
IST (India)
JST (Japan)
AEST (Australia)
CET (Central Europe)
Convert
Results
Original Time
Converted Time
Time Difference
Fuel Cost / Road Trip Calculator
Distance (miles)
Fuel Efficiency (mpg)
Gas Price ($/gal)
Calculate
Results
Gallons Needed
Fuel Cost
Cost per Mile
Unit Converter
Category
Length
Weight
Temperature
Volume
Area
From
To
Value
Convert
Result
Conversion
GPA Calculator
Course Name
Grade
A
A-
B+
B
B-
C+
C
C-
D+
D
D-
F
Credit Hours
+ Add Course
Calculate GPA
Results
GPA
Total Credits
Grade Calculator
Assignment Name
Score (%)
Weight (%)
Assignment Name
Score (%)
Weight (%)
Assignment Name
Score (%)
Weight (%)
+ Add Assignment
Calculate Grade
Results
Weighted Average
Letter Grade
Total Weight Used