Everyday calculators
Tips, split checks, gas money, grades, recipes and dog years. 27 in this section.
- Tip CalculatorWork out the tip and total, split the check between people and round each share up.
- Split Bill CalculatorSplit a check unevenly by what each person ordered or by shares, with tax and tip divided fairly.
- Sales Tax CalculatorAdd sales tax to a price, or back the tax out of a total that already includes it.
- Discount CalculatorSale price after one or two stacked percentage discounts and a dollar-off coupon, with your total savings.
- Gas Cost CalculatorFuel cost for a road trip, one way or round trip, and the cost per traveler.
- Commute Cost CalculatorWhat driving to work costs per week, month and year in fuel, wear, tolls and parking.
- MPG CalculatorFuel economy from miles driven and gallons used, with L/100 km and cost per mile.
- Electricity Cost CalculatorWhat an appliance costs to run per day, month and year from its wattage and hours of use.
- GPA CalculatorGrade point average on a 4.0 scale from letter grades and credit hours, plus cumulative GPA.
- Grade CalculatorTurn points earned out of points possible into a percentage and letter grade.
- Final Grade CalculatorThe score you need on your final exam to reach the course grade you want.
- Weighted Grade CalculatorCourse grade from category scores and their weights, such as homework, quizzes and exams.
- Dog Age CalculatorYour dog’s age in human years, adjusted for size, using the widely used veterinary chart.
- Cat Age CalculatorYour cat’s age in human years and life stage, using the AAHA/AAFP feline life stage guidelines.
- Unit Price CalculatorCompare the price per ounce, pound or item of two or three products to find the better deal.
- Cost Per Use CalculatorWhat a purchase really costs each time you use it, after accounting for resale value.
- Recipe ScalerScale a recipe’s ingredient list up or down to any number of servings, with kitchen-friendly fractions.
- Coffee Ratio CalculatorHow much ground coffee to use for a given amount of water, or how much water for your beans.
- Reading Time CalculatorHow long a text takes to read silently or aloud, from a word count or pasted text.
- TV Size CalculatorBest TV size for your viewing distance, or the right seating distance for a TV, using SMPTE and THX guidelines.
- Screen Size CalculatorPixel density (PPI), aspect ratio and physical width and height of a screen from its resolution and diagonal.
- Pizza Size CalculatorCompare pizza sizes by price per square inch to see which is the better deal.
- Tire Size CalculatorCompare two tire sizes: sidewall height, overall diameter, revolutions per mile and speedometer error.
- Subscription Cost CalculatorAdd up streaming, software and other subscriptions to see what they cost per month and per year.
- Quit Smoking Savings CalculatorHow much you save by quitting smoking, per month and year, and what it could grow to if invested.
- Moving Box CalculatorHow many small, medium, large and wardrobe boxes to get for a move, plus tape and packing paper.
- Party Food and Drink CalculatorHow much food, drinks, ice and tableware to buy for a party based on guests and length.