Which modes does the date calculator offer?
Three: days between two dates, add/subtract days to a date, and countdown — covering everyday date math.
How do I calculate days between two dates?
Pick the "between" mode, enter start and end dates; the tool computes exact days, crossing months and years.
How do I find the date 100 days from now?
Use the add-days mode, enter 100 — the tool shows the target date and weekday, great for planning and countdowns.
Is online calculation safe?
Safe. Runs locally with zero upload.
What is it best for?
Project scheduling, exam countdowns, anniversaries, contract deadlines, pregnancy weeks and holiday planning.
Are there limits on free use?
No. Free, no registration, unlimited.
Does the countdown show the weekday?
Yes — target dates include the weekday for scheduling.
Does it support lunar dates?
Gregorian for now; lunar support is planned, and Gregorian covers most needs.