How Many Days Until March 18?

How to Calculate Days Manually

No calculator? Here’s how to count days to March 18th by hand:

Method 1: Simple Subtraction

If today is in March 2026:

• Subtract today’s date from 18.
• Example: On March 1, 2026, 18 - 1 = 17 days.

If today is before March 2026:

• Add remaining days in the current month, days in months until February, plus 18 days in March.
• Example: On June 17, 2025, 13 days (June) + 31 (July) + 31 (August) + 30 (September) + 31 (October) + 30 (November) + 31 (December) + 31 (January) + 28 (February) + 18 (March) = 274 days.

Tip: Use this table for days in each month or try our Days Between Dates Calculator:

Method 2: Use Google Sheets or Excel

Enter this formula in a cell to get days from today:

=DATE(2026, 3, 18) - TODAY()

Or, from a specific date (e.g., in cell A1):

=DATE(2026, 3, 18) - A1

Work Days Until March 18th

Need workdays (excluding weekends and holidays)? Use our calculator or estimate manually:

• Roughly 5 workdays per week.
• Subtract holidays (e.g., Labor Day on September 7, 2025, Veterans Day on November 11, 2025, Thanksgiving on November 26, 2025).
• Example: workdays, assuming three holidays (Labor Day, Veterans Day, Thanksgiving).

Check our Business Day Calculator for exact workdays.

Why March 18th?

Have a key event or deadline on the horizon? Our countdown ensures you’re ready for March 18. Share with your team!

More Countdowns

Track other dates or explore time tools:

• Date Calculator
• Days Between Dates Calculator
• Business Day Calculator
• How Many Days Until Calculator
• Countdown Calculator