Everyday Calculators
Tips, GPA, dates, and useful daily tools · 13 calculators
Dates & Time3
Age Calculator
Calculate your exact age in years, months, and days from your date of birth — plus total weeks, days, and the countdown to your next birthday.
Date Calculator
Find the number of days between two dates, or add and subtract days, weeks, months, and years from any date. Includes a days-until countdown.
Time Duration Calculator
Calculate the hours and minutes between two times, or add and subtract time. Great for timesheets — optionally multiply by an hourly rate for pay.
Shopping & Money3
Tip Calculator
Calculate tip amount and split the bill between multiple people. Works for restaurants, delivery, and any service.
Sales Tax Calculator
Add sales tax to a price or work backward from a total to find the pre-tax amount and the tax paid. Enter any tax rate.
Discount Calculator
Calculate the sale price and how much you save from a percent-off discount. Stack a second discount or add sales tax to get the final price.
Home & Car3
Fuel Cost Calculator
Estimate the fuel cost of a trip from the distance, your vehicle's fuel economy, and the price of gas. Works for a one-way or round trip.
Gas Mileage Calculator
Calculate your vehicle's fuel economy in MPG (and L/100km) from the distance driven and the fuel used. Optionally see your cost per mile.
Electricity Cost Calculator
Find out what an appliance costs to run. Enter its wattage, how long it runs, and your electricity rate to get the daily, monthly, and yearly cost.
Kitchen & School4
Cooking Measurement Converter
Convert between cups, tablespoons, teaspoons, fluid ounces, and milliliters, and scale a recipe up or down by servings.
GPA Calculator
Calculate your GPA for high school or college. Add courses, credits, and letter grades to get your weighted or unweighted GPA.
Final Grade Calculator
Find out what score you need on your final exam to reach the grade you want, based on your current grade and how much the final is worth.
Test Grade Calculator
Turn a number correct out of total questions into a percentage and letter grade. Includes a points-off mode and a full grading scale showing the score for each result.