Date Calculator 2026: Add or Subtract Days from Any Date
Free, advanced date calculator with timezone support. Calculate future or past dates by adding/subtracting years, months, weeks, days, hours, minutes, and seconds. No sign-up required.
Years
Months
Days
Hours
Minutes
Seconds
Calculation Results
ReadyEnter values and click "Calculate Date" to see results
Duration Breakdown
Advanced Features for 2026
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Lightning Fast
Real-time calculations with instant results. Optimized for Core Web Vitals and mobile performance.
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Global Timezone Support
Calculate across timezones with automatic DST handling. Perfect for international teams and travel planning.
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Privacy First
All calculations happen locally in your browser. No data is sent to servers or stored.
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Mobile Optimized
Fully responsive design with touch-friendly interface. Works perfectly on all devices.
Common Use Cases
- Project Deadlines: Add 90 days to start date to find project completion date
- Event Planning: Subtract 30 days from event date for reminder scheduling
- Subscription Tracking: Add 1 year to subscription start date for renewal date
- Age Calculation: Subtract birth date from today to calculate exact age