About Calcadian
Fast calendar math, without the clutter.
A focused hub of date and time calculators for everyday planning.
What is Calcadian?
Calcadian is a small collection of date and time calculators built to do one thing well: give you the answer fast, without forcing you through ads, popups, or signup walls.
What can you do here?
- Count the days, weeks, months, or years between two dates.
- Add or subtract time from any date.
- Count working days, excluding weekends and the holidays you observe.
- Calculate exact age from any date of birth.
- Measure time durations and convert Unix timestamps.
Our principles
- Fast. Lightweight pages, instant calculations, no spinners.
- Clean. No clutter, no popups, no dark patterns.
- Private. Calculations run in your browser.
- Mobile-first. Designed for thumbs before desktops.