About Date Format Converter
Convert a date between formats — ISO 8601, US (MM/DD/YYYY), European (DD/MM/YYYY), long form, and more. Paste a date and get it in the format you need.
How to Use
- Enter or pick a date.
- Choose the output format.
- Read the reformatted date.
- Copy it for your document or code.
Why Use This Tool?
- Accurate — built on precise, well-tested mathematical formulas.
- Instant — all calculations happen client-side for zero latency.
- Private — no data is sent to any server; your information stays on your device.
- Free — no sign-up, no limits, no hidden costs.
Frequently Asked Questions
What is ISO 8601 date format?
ISO 8601 writes dates as YYYY-MM-DD (e.g. 2026-08-08), an unambiguous international standard that sorts correctly and is preferred in code and databases.
Why do US and European date formats differ?
The US writes month/day/year (08/06/2026 = 6 August) while most of the world writes day/month/year (06/08/2026 = 6 August). This ambiguity is exactly why ISO 8601 is recommended.
Does it change the actual date?
No — it only changes how the same date is displayed. The underlying day, month, and year stay the same.