Timestamp Converter

Two-way conversion between timestamps and dates/times, supporting second- and millisecond-level timestamps, with multiple output formats and batch processing features.

Bug report

Browser execution mode: Your data is processed in your browser and is not uploaded to the server.

Speed and Stability: Processing speed depends on your device and browser. For large batch work, the desktop version may be more stable.

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If the online tool fails to load or run, try the desktop tool.https://tools.yikeaigc.com/

Tool Usage

Return to old version

Current time

Current Unix timestamp (seconds)

Current Unix timestamp (ms)

Set the time zone, timestamp unit, and output format in “Settings” before single or batch processing.

Conversion settings

Set display time zone, unit detection, and batch reading mode. Saved locally.

Result time zone

Timestamp unit Auto detect uses length: 10, 13, 16, or 19 digits.

Date output format

Date parsing time zone

Batch conversion direction

Batch Read Field

Text Column Separator

Copy Result Language

Result Options

Export Header Mark Error Rows Auto Convert on Input

Scenario Presets

Choose a common scenario to quickly adjust parameters. You can still edit them manually.

After finishing settings, go to the next step.

Single conversion

Use this to check one timestamp or datetime. Results display using your settings.

Timestamp Supports seconds, milliseconds, microseconds, nanoseconds, and fractional seconds.

Quick Fill

Date

Time

Milliseconds Date parsing time zone comes from parameter settings.

Conversion result

Each field can be copied separately for pasting into code, tables, or API parameters.

No results yet. Enter data and convert first.

Batch input

Text is processed by line; files are read locally and can be zipped for download after processing.

Batch text

Select TXT, CSV, LOG, JSON files Multiple files supported; only the first 20 are shown, but all selected files will be processed.

Batch result preview

Preview the first 20 records. Export includes all processed results.

No batch results yet.

Results overview

Export single or batch results. File batch results are generated using the original file names.

Copy & download

ZIP includes CSV, TXT, and JSON; if files were processed, each file's converted results are also included.

No results to export.

Instructions

Software Usage Instructions

Set conversion parameters: First go to “Parameter Settings” and select the result display time zone, timestamp unit, date output format, date parsing time zone, batch conversion direction, and field reading method.
Save common settings: Click “Save Settings” to keep the current parameters. For quick configuration, you can choose scenario presets such as API debugging, log troubleshooting, Beijing time, or CSV batch processing.
Perform a single conversion:
- Timestamp to date: Enter a timestamp in seconds, milliseconds, microseconds, or nanoseconds, then click “Convert Timestamp” to view results such as date, ISO, UTC, and relative time.
- Date to timestamp: Select the date, time, and millisecond value, then click “Convert Date” to generate timestamps in seconds, milliseconds, microseconds, and nanoseconds.
Process data in batches: You can enter one item per line in the text box, or select a TXT, CSV, LOG, or JSON file. The interface only previews the first 20 results, but the actual processing includes all data.
Check batch results: After processing is complete, view the number of successful and failed items, source, input content, conversion result, and error messages to help verify abnormal rows.
Export conversion results: Go to the “Result Export” page to copy the results or download a TXT, CSV, or ZIP file. The ZIP contains CSV, TXT, JSON, and file batch processing results.

FAQ

A: A timestamp in seconds is usually 10 digits, milliseconds is usually 13 digits, microseconds is usually 16 digits, and nanoseconds is usually 19 digits. The finer the unit, the higher the time precision it can represent.

A: Automatic detection determines the unit based on the number of digits, and is suitable for common 10-digit, 13-digit, 16-digit, and 19-digit timestamps. If the data source is fixed, it is recommended to manually specify the unit in the parameter settings.

A: The date parsing time zone is used to interpret the date and time entered by the user, such as which time zone “2024-01-01 08:00:00” belongs to; the result display time zone determines which time zone the converted date is shown in.

A: You can paste multi-line text directly, or select TXT, CSV, LOG, or JSON files. In the batch parameters, you can choose to read the entire line, the first column, or the last column, which is suitable for processing logs and tabular data.

A: The original file names are preserved when exporting a ZIP. If multiple result files have the same name, a numeric suffix is appended to the original file name, such as data.csv, data-1.csv, data-2.csv.

A: Common causes include mismatched timestamp length, incomplete date format, incorrect field read position, or incorrect time zone entry. You can first switch to automatic detection mode, then check the delimiter and field reading method.

Answer: The CSV includes fields such as source, original row, input content, status, conversion direction, result time, second-level timestamp, millisecond-level timestamp, ISO time, UTC time, relative time, time zone, recognized unit, and error information.

Timestamp Converter

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Tool Usage

Conversion settings

Scenario Presets

Single conversion

Conversion result

Batch input

Batch result preview

Results overview

Copy & download

Instructions

Software Usage Instructions

FAQ

Q: What is the difference between timestamps in seconds, milliseconds, microseconds, and nanoseconds?

Q: Is automatic timestamp unit detection reliable?

Q: What is the difference between the date parsing time zone and the result display time zone?

Q: What input methods are supported for batch conversion?

Q: What happens if batch files have duplicate names?

Q: Why do some batch data conversions fail?

Q: What fields are included in the exported CSV?

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