Everyday calculators and converters
Sixteen quick tools for the small calculations and jobs that come up every day, including a set built for the job search.
- Unit ConverterLength, weight, temperature, volume and more.
- Percentage CalculatorPercent of, percent change, increase and decrease.
- Age CalculatorExact age in years, months and days.
- Date CalculatorDays between dates, and add or subtract time.
- Tip CalculatorTip, total and cost per person.
- Invoice GeneratorCreate a simple invoice and download it as a PDF.
- AI Resume CheckerScore your resume against a job description.
- AI Cover Letter GeneratorGenerate a cover letter draft from a few details.
- Job Application TrackerTrack job applications on a simple kanban board.
- Salary Negotiation CalculatorCalculate a reasonable counter-offer range.
- Elevator Pitch GeneratorBuild a 30-second pitch about yourself.
- Time Zone ConverterConvert a time between cities and time zones.
- GPA CalculatorSemester and cumulative GPA on a 4.0 scale.
- Random Number GeneratorRandom numbers, a coin flip and dice.
- Online Timer and StopwatchCountdown timer with alarm, and a stopwatch.
- Fraction CalculatorAdd, subtract, multiply and divide fractions.
Most of us reach for a calculator a few times a week: converting a recipe, working out a discount, counting days to a deadline, or splitting a bill. These tools give a fast answer and show how it was reached.
They work on phones and computers, in any language setting, and nothing you enter leaves your device.
Which tool should I use?
- Converting units or cooking measures? Unit Converter. Length, weight, temperature, volume, area, speed, time and data.
- Working out a discount or a rise? Percentage Calculator. Percent of, percent change, increase and decrease.
- Need an exact age? Age Calculator. Years, months and days, plus the next birthday.
- Counting days or planning a date? Date Calculator. Days between dates, or add and subtract time.
- Splitting a restaurant bill? Tip Calculator. Tip, total and cost per person.
- Scheduling across time zones? Time Zone Converter. Compare times in up to five cities.
- Working out your grades? GPA Calculator. Semester and cumulative GPA.
- Need a random pick? Random Number Generator. Random numbers, a coin flip and dice.
- Timing something? Online Timer and Stopwatch. Countdown timer with an alarm, and a stopwatch.
- Doing fraction homework? Fraction Calculator. Add, subtract, multiply and divide fractions.
- Sending a client a bill? Invoice Generator. Add line items and download a PDF invoice.
- About to apply for a job? AI Resume Checker. See your resume's keyword match against the posting.
- Need a cover letter fast? AI Cover Letter Generator. A complete draft from a few details.
- Applying to lots of jobs at once? Job Application Tracker. A simple kanban board, saved on your device.
- Got a job offer? Salary Negotiation Calculator. See a reasonable counter-offer range.
- Nervous about networking? Elevator Pitch Generator. Build a clear 30-second pitch about yourself.
Guides for these tools
- Cups to Grams: A Baking Conversion Guide. Why cups do not convert with one number, with a chart of 13 ingredients.