Date Calculator

Find the exact span between two dates or move any date forward and backward. Days, weeks, months and years — computed instantly and privately.

📅 Every unit

See the span in days, weeks, months and years — or the target date in full detail.

🔒 Fully private

Dates are processed locally in your browser. Nothing is sent to any server.

⚡ Instant updates

Results recalculate as you change any input field.

🎯 Calendar accurate

Leap years and month lengths are handled correctly by the browser's calendar engine.

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Age, business days and time calculations for planning and deadlines.