Before you start
What you need
One timestamp or ISO-style date per non-empty line.
Developer & Data
Epoch Batch Converter
Convert up to 1,000 timestamps or dates into a reusable UTC CSV table.
- 01Runs in this browser
- 02Limits are explicit
- 03Copy or download output
No black box
How this tool handles the input
Each non-empty line uses the same seconds, milliseconds, or date interpretation as the single timestamp tool, then becomes one CSV row.
What you get
What the page gives back
CSV containing source value, UTC time, Unix seconds, and Unix milliseconds.
Keep in mind
Use the result responsibly
Date text without an explicit zone can depend on the browser locale and time zone. Prefer ISO values with Z or an offset.
Practical uses
Where this tool earns its place
- Normalize timestamps exported from a log.
- Create UTC columns for a small data set.
- Compare mixed seconds and milliseconds in one review.
Verified data boundary
Source text stays on this page.
The published contract marks these tools as client-only processing. Nirmion uses the API only to confirm that this workspace is enabled in MySQL; source values and results are not sent to Flask.