Everyday Calculators and Tools

Small tools for everyday questions: how old someone is to the day, how many days until a date, adding up hours and minutes, converting military time, your dog's age in human years, a strong password you can actually remember, and how many words or characters are in a piece of writing.

10 free calculators · no sign-up

Most used

Age CalculatorExact age in years, months and days.Password GeneratorRandom, memorable, sentence and PIN passwords.Date DifferenceDays, weeks and business days between dates.

Dates and time

Ages, dates, durations and 24-hour time.

Age CalculatorExact age in years, months and days.Business Days CalculatorWorking days between dates, or a date plus business days.Dog Age CalculatorYour dog's age in human years, using the DNA-based formula.Cat Age CalculatorCat years to human years, with life stage.Date DifferenceDays, weeks and business days between dates.Days Until CalculatorCountdown to any date, holiday or birthday.Time CalculatorAdd and subtract hours, minutes and seconds.Military Time Converter12-hour to 24-hour time and back, with a full chart.

Security

Strong passwords and leak checks.

Password GeneratorRandom, memorable, sentence and PIN passwords.

Writing

Words, characters and reading time.

Word CounterWords, characters and reading time.

Quick answers

Ready-made results for the most common searches.

Questions about everyday calculators

Are the passwords generated here safe?

They are created in your browser with its cryptographic random generator and never sent anywhere. The leak check sends only the first five characters of a scrambled version of the password.

How is exact age calculated?

By counting whole years, then months, then days from the birth date, the same way you'd count on a calendar, including leap years.

🧰 Everyday Calculators and Tools