• Days until any dateCountdown in days and weeks
• Date difference calculatorDays, weeks and months between two dates
• Add or subtract daysDate N days from any date
• Age calculatorExact age and next birthday
• Day of the week finderWhat day was any date
• Business days calculatorWeekdays between dates
• Time card calculatorHours worked with breaks
• Week numberISO week of any date
• Days left in the yearYear progress
• Half birthday calculator6 months after your birthday
• Sleep calculatorBedtimes by sleep cycles
• Dog age calculatorDog years to human years
• Cat age calculatorCat years to human years
• Overtime calculatorTime-and-a-half pay
• Unix timestamp converterEpoch time ↔ date
• Military time converter24-hour ↔ 12-hour
• Electricity cost calculatorCost to run any device
• Hourly to salary calculatorHourly ↔ annual pay