Date Range Calculator

Figure out exact durations, business days, deadlines, countdowns, and future or past dates in one place. Handy for sprint planning, invoices, subscription periods, travel, contracts, and shipping windows.

Exact duration math Business day mode Add / subtract dates 100% client-side

Date difference

Compare two dates or datetimes and get exact elapsed time plus working-day counts.

Add or subtract from a date

Useful for due dates, trial periods, cooldowns, anniversaries, and scheduling windows.

Countdown

See how far away an event is, including a human-readable countdown and urgency signal.

Results

Everything updates locally in your browser. Nothing is uploaded.

Calendar days—
Business days—
Weeks + days—
Hours—

Exact duration

ReadablePick two dates to calculate.
Elapsed—
Inclusive count—
Weekday count—

Date math output

Result date—
Day of week—
ISO format—
Business-day helper—

Countdown output

Status—
Readable—
Total hours—
Total minutes—
Your summary will appear here after a calculation.