Date & Calendar Math

Date Format Converter

Convert dates between ISO, US, UK/EU, German, Long text, and Unix timestamp formats safely.

Selecting the source format prevents ambiguity like 03/04/2026.

Calculation Result

Instant
2026-09-29
Parsed from YYYY-MM-DD: 2026-09-29
ISO 8601
2026-09-29
US Standard
09/29/2026
UK / EU Standard
29/09/2026
Unix Timestamp
1790640000

About Date Format Converter

Convert dates unambiguously between ISO 8601 (YYYY-MM-DD), UK/EU (DD/MM/YYYY), US (MM/DD/YYYY), German (DD.MM.YYYY), and Unix Epoch Timestamps.

Calculation Methodology & Formula

Parses input according to the explicitly selected source format, validates the calendar date strictly (preventing invalid dates like Feb 30), and outputs all standardized international representations.

How to Use This Calculator

  1. Enter your date string.
  2. Select the exact Source Format (e.g. YYYY-MM-DD or DD/MM/YYYY).
  3. Click "Convert Format" to view all converted formats.

Frequently Asked Questions

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