“Date Calculator” web app with advanced features and a modern color scheme.Advanced Date Calculator | Precision Date Tool

📅 Date Calculator ⚡ Advanced

Precision date math — difference, addition/subtraction, and in-depth metrics

✨ Leap year aware · Time-span breakdown · All formats

🔍 Difference Between Dates

📆 Start Date

📆 End Date

📊 Result (Duration)

— years, — months, — days

Total: — days

Weeks

—

Hours

—

Minutes

—

Seconds

—

⚙️ Add / Subtract Time

📅 Base Date

➕ Quantity

⏱️ Unit

📌 New Calculated Date

—

📈 Advanced Context

Year Progress

—%

Days in Year

—

Week of Year

—

Quarter

—

🌟 Is Leap Year? — 📅 Day of Year: —