Everyday Life Calculators

Tip, total and per-person split with any tip %.

km/L, MPG and L/100km — three metrics at once.

Best bedtimes based on 90-minute sleep cycles.

Scale any recipe up or down by servings.

Estimated travel time from distance & speed.

How much your next road trip will cost in fuel.

Pace per km and average speed for any distance and time.

The years, months and days between any two birthdays.

Days, hours, minutes and seconds until any future date and time.

Days until your next birthday and the age you'll be turning.

Find what day of the week any date falls on.

Check if a year is a leap year and how many days it has.

Convert a date and time between two UTC offsets.

Split a bill among any number of people with tip and tax.

Price per unit to compare deals and find the best value.

Generate a uniformly random date between two bounds.

Convert any number into its English word form.

Parse English number words back into a numeric value.

Count characters, words and lines in any text.

Words per minute and accuracy from characters typed and errors.

Bits of entropy and strength category for any password.

Turn any total cost into its daily, monthly and annual equivalents.

Turn any total cost into its monthly, daily and annual equivalents.

Turn any total cost into its annual, monthly and daily equivalents.