Your contract says payment is due “72 hours after delivery.”

You delivered at 3:45 PM on a Tuesday. When exactly is payment due? What’s the date and time?

You could do mental math for 10 minutes, or use this calculator and get it in 5 seconds.

What This Does

Add or subtract any combination of days, hours, minutes, and seconds to any date. Get both the future date (date + interval) and past date (date minus interval).

How to Use It

Step 1: Select Your Base Date Pick the starting date and time (defaults to now).

Step 2: Enter Your Interval Fill in any combination of:

• Days
• Hours
• Minutes
• Seconds

Leave any field at 0 if you don’t need it.

Step 3: Calculate Click “Calculate Dates” and get:

• Base date (your starting point)
• Date + Interval (future date)
• Date minus Interval (past date)
• Summary showing exactly what interval you added

Use Cases

• Contracts: “Payment due 72 hours after delivery”
• SLAs: “Response time: 4 hours from ticket creation”
• Deadlines: “Submit 48 hours before the meeting”
• Expiration dates: “Valid for 90 days, 12 hours from purchase”
• Cooking/Baking: “Let it rest for 2 hours 30 minutes”

Why This Matters

Precision matters in business. When contracts specify hours and minutes, you can’t just guess. This calculator gives you exact timestamps for accountability.

The Win

Never miss a deadline because of bad time math. Get precise dates and times for everything.