Live clock and dashboard
See the current time and date at a glance. Your next countdown sits on the home screen so upcoming deadlines and anniversaries stay visible.
Age calculator
Enter a birth date and optional birth time to get exact years, months, and days. Kairosa also shows total weeks, an estimated sleep-hours snapshot, and a live countdown to the next birthday.
Date difference
Compare two dates and read the span in years, months, days, plus equivalent totals in weeks, hours, and minutes. Useful for contracts, travel, and project timelines.
Add or subtract time
Start from any date, choose add or subtract, then apply years, months, and days to land on a target date and weekday.
Multi-calendar converter
Convert between:
• Gregorian (civil)
• Bangla / Bengali solar calendar
• Hijri / Islamic lunar calendar (tabular civil approximation)
You also get leap-year status, day-of-year, and a Bangla date readout alongside the converted result.
Event countdowns
Create custom countdowns with title, date, optional time, and category (Personal, Project Deadline, Milestone, Reminder). Search events and keep calculation logs on the History screen. A “Today in History” note adds a little context to the day.
Made for focus
Light and dark themes. Calculations and events stay on your device. No account is required.
Plan your future with precision.
Notes
Hijri results follow a tabular (civil) calendar model and may differ from moon-sighting or regional religious calendars. Bangla dates follow the modern reformed Bengali calendar used in Bangladesh.
Precision age, date difference, Hijri & Bangla calendars, and event countdowns.