Date Calculator
Count days between dates or add time to a date.
Turn a date question into a clear answer
Counting from a start date is useful for project handoffs, return windows, study plans, and personal milestones. State whether the first day counts before relying on the result.
For contractual deadlines, always check the governing terms and local business-day rules.
Useful checks
Does this account for daylight saving time?
Timezone comparisons use the browser timezone database. Confirm critical travel, payroll, or legal deadlines with the relevant local authority.