Days Until or Since Calculator

Enter a target date and select a timezone to calculate the number of days until or since that date:

Your IP: 3.22.41.47. Calculations are based on your selected timezone. Current date in the selected zone: 2025-05-08 06:44:04 EDT (-04:00).

Target Date:

Timezone:

Calculate Days Since Your Birthday

Want to know how many days old you are, or how many days since your last birthday? Enter your birth date in the calculator above. The result will automatically tell you how many days have passed since then (Days Since).

Example Calculations

Examples showing the number of days until or since various dates, based on the currently selected timezone.

Date: 2025-12-25 (in America/New York):
Days Until: 231 days until.
Days Since: Date is in the future. 231 days until.

Date: 2026-01-01 (in America/New York):
Days Until: 238 days until.
Days Since: Date is in the future. 238 days until.

Date: 1990-05-15 (in America/New York):
Days Until: Date is in the past. 12777 days since.
Days Since: 12777 days since.

Date: 2026-05-08 (in America/New York):
Days Until: 365 days until.
Days Since: Date is in the future. 365 days until.