Everyday Calculators
Quick, free tools for everyday calculations — age, tips, dates, percentages, and more.
17 calculators
- AgeCalculate exact age with zodiac, life stats, and planetary ages
- DateAdd or subtract time from any date
- TimeAdd and subtract time durations instantly.
- GPACalculate semester and cumulative GPA easily.
- GradeCalculate weighted grades and final exam scores.
- DiscountCalculate discounts, sale prices, and savings.
- AverageMean, median, mode and standard deviation from a pasted list.
- Electricity CostWhat an appliance costs to run per day, month and year.
- FractionAdd, subtract, multiply and divide fractions, with the steps shown.
- Fuel CostTrip fuel cost in mpg, L/100 km or km/L.
- PercentageCalculate percentages quickly and easily online.
- RatioSolve proportions, simplify ratios and get the scale factor.
- Roman NumeralConvert numbers to Roman numerals and back, with the breakdown.
- Sales TaxAdd sales tax by state, or extract it from a total.
- Time CardWeekly hours from clock-ins, with breaks and overtime.
- Unit PriceCompare two packages by unit price, across different units.
- Word CountCount words, characters, sentences and reading time.
About these calculators
Free everyday calculators: age, tip, date difference, time zones, percentage, random number and more. Quick tools for daily life decisions.