Everyday Calculators
The small calculations that come up constantly, done properly. Percentages that state the answer as a sentence so you can check it means what you intended. Ages that count months correctly instead of assuming every month is thirty days. Time zones that apply the real daylight saving rules for the date you pick rather than a fixed offset.
These are the tools most likely to be opened one-handed on a phone at a restaurant table or in a meeting, so every one of them loads instantly, works without an account, and puts the answer above the fold.
Everyday tools
- Percentage CalculatorSolve every common percentage question - what is X% of Y, X is what percent of Y, and the percentage change between two numbers.
- Age CalculatorWork out an exact age in years, months, and days from any date of birth - plus total days lived and the countdown to the next birthday.
- Tip CalculatorCalculate the tip and split the check between any number of people, with a rounding option and a US tipping reference.
- Time Zone ConverterConvert a time across cities and plan meetings that land in working hours everywhere - with daylight saving handled automatically.
- Date CalculatorCount the days, weeks and business days between two dates, or add and subtract time from any date to find the result.
- GPA CalculatorCalculate your semester and cumulative grade point average, weighted by credit hours, with support for honors and AP courses.
- Grade CalculatorWork out your current weighted grade and exactly what you need on the final exam to finish with the grade you are aiming for.
- Pace CalculatorConvert between pace, distance and finish time for any race, with splits and predicted times at every standard distance.