About DayCalcs
DayCalcs answers one kind of question well: what date is it after, or before, a number of days, weeks or months? It also counts business days and the days left until the dates that matter to you.
Every answer is worked out in your browser, in your own time zone, so the date you see is right for where you are. Nothing you type is sent to us or stored.
Counting starts the day after your start date, the same way deadlines and notice periods are usually counted. Business days are Monday to Friday, with an option to skip US federal holidays.
Found a mistake or want a new calculator? Get in touch.
Our tools
01Day counterCount the days between two dates, until a date or since a date. Weekdays and holidays too.02Date calculatorAdd or subtract days, weeks, months and years from any date.03Hours calculatorHours between two times, plus a weekly time card with breaks, overtime and pay.04Time calculatorAdd or subtract hours, minutes and seconds, or find the time between two moments.05Age calculatorExact age in years, months and days, plus your next birthday and life milestones.06Sleep calculatorBest times to go to bed or wake up, based on 90-minute sleep cycles.07Retirement calculatorProject your savings, see how long they last and count down to your retirement date.08401(k) calculatorYour 401(k) balance at retirement with employer match and salary growth.09Business day calculatorAdd working days to a date or count them, skipping weekends and US holidays.10Birthday countdownDays until your next birthday, the weekday it falls on and how old you will turn.