RTools

Age Calculator – Exact Years, Months, Days & Next Birthday Use this free Age Calculator to find your exact age in years, months, and days. See your next birthday countdown , the weekday you were born , your zodiac sign , and the total time lived in days, hours, and minutes. Everything runs in your browser—no data saved. Contents: Age Calculator • How It Works • FAQ Age Calculator Date of Birth As of (optional) Defaults to today if empty Calculate Reset Exact Age — — Next Birthday — — Born On (Weekday) — — Western Zodiac — Time Lived — — How This Age Calculator Works Exact age (Y/M/D) uses real calendar rules (variable month lengths and leap years). Next birthday adjusts correctly for leap-da...

Days Between Dates Calculator – Date Difference in Days, Weeks, Months, Years & Business Days (Free Online) Use this fast Days Between Dates Calculator to find the exact difference between two dates. See total days , weeks + days , calendar years/months/days , plus business days (excluding weekends) and optional custom holidays . Everything runs in your browser—no data saved. Calculate Date Difference Start Date End Date Swap ↔ Include end date (inclusive) Calculate business days (Mon–Fri) Exclude custom holidays Holidays (one per line or comma-separated, YYYY-MM-DD) These dates will be excluded from business-day count if they fall on weekdays. Calculate Reset Tip: Inclusive adds 1 day to the span (useful for date spans covering full days). Total Days ...