Free Date & Time Tools

Dates are deceptively tricky. Leap years, months of different lengths, weekends, public holidays and shifting time zones all conspire to make "how many days is that?" harder than it looks. CrispToolHub's free date and time tools take that work off your hands with a focused set of calculators that each do one job precisely — and all of them run entirely in your browser, with no sign-up and nothing uploaded.

Start with the age calculator, which tells you your exact age in years, months and days, plus your age expressed purely in months, days or hours, the day of the week you were born, your zodiac sign, and a countdown to your next birthday. The days between dates tool counts the gap between any two dates and breaks it down into weeks, working days and weekends, while the date difference calculator expresses the same gap in every unit at once — years and months, total weeks, total hours and even total minutes.

For work and planning, the business days calculator counts working days between two dates or adds a number of business days to a start date, skipping weekends and optionally public holidays — perfect for delivery estimates, notice periods and project deadlines. The countdown timer ticks down live to any event with a progress bar, and ships with presets for New Year, Christmas, Diwali and Eid.

Working across borders or in code? The time zone converter translates a time across major world cities with live UTC offsets that respect daylight saving, the Unix timestamp converter turns epoch seconds or milliseconds into readable dates and back, and the holiday calendar lists public holidays for India, the USA, the UK, the UAE, Canada, Australia, Germany, France, Singapore and Japan across 2025 to 2027. Pick a tool above to get started.