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About Our Utility Calculators
Age, Date and Time
The age calculator gives your exact age in years, months, and days based on your date of birth. It is also useful for finding the number of days between two dates, planning deadlines, or tracking how long ago an event happened. The time calculator adds and subtracts hours and minutes for shift planning, time zone conversions, and travel scheduling.
Unit Conversions
The conversion calculator handles the measurements that trip people up most often: miles to kilometers, pounds to kilograms, Fahrenheit to Celsius, and fuel economy between MPG and L/100km. These are handy for travel, cooking, home projects, and working with international measurements. All conversions use standard international reference values.
Grades and GPA
The GPA calculator converts letter grades and percentage scores into a 4.0-scale GPA. You can weight courses by credit hours to get a weighted GPA. The grade calculator works backwards: enter your current grade and target grade to find out what you need on a final exam. Both tools are useful for students tracking academic standing or planning for graduate school applications.
Frequently Asked Questions
How does the age calculator work?
Enter your date of birth and the age calculator finds the difference between that date and today (or any target date you choose). It accounts for leap years and gives your age in years, months, and days. It also shows the total number of days you have been alive.
How do I calculate fuel cost for a road trip?
Use the fuel cost calculator. Enter the trip distance, your car's fuel economy (MPG or L/100km), and the price per gallon or litre. The calculator gives you the estimated fuel cost for the full trip. You can also use it to compare two vehicles for the same journey.
What GPA do I need for graduate school?
Most graduate programs look for a minimum GPA of 3.0 on a 4.0 scale, though competitive programs often expect 3.5 or higher. Use the GPA calculator to see where you stand and the grade calculator to figure out what grades you need in remaining courses to reach your target.
How do I convert Celsius to Fahrenheit?
The formula is F = (C x 9/5) + 32. For quick mental math: double the Celsius value and add 30 for a rough estimate. Use the conversion calculator for exact results in either direction.