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Nanosecond Timestamp Converter
Convert exact Unix nanoseconds and supported fractional RFC3339 timestamps.
Direction, Epoch nanoseconds or RFC3339 timestamp
nanosecond-timestamp-converter.json (complete report)
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter values using the examples, or choose a local file where requested. Follow the displayed supported input shapes and limits.
- Choose Calculate result and inspect the complete result.
- Download result to save the primary file. Where supplied, additional links save source files and the full JSON report. Reset restores examples and clears output.
Examples
Direction: nanoseconds-to-timestamp
Epoch nanoseconds or RFC3339 timestamp: -1
Limitations
- Exact integer Unix nanoseconds and zoned RFC3339 calendar timestamps with at most9 fractional digits. Years0001–9999; output fixed9-digit fractional UTC timestamp. No leap seconds. Negative subsecond epochs use floor division.
- Text fields are limited to100,000 UTF16 units each and400,000 combined UTF8 bytes; file fields have their own displayed limits. Combined output is at most4MiB. Processing stops after30 seconds; tool-specific bounds may be tighter.
- Generated source is a downloadable result and is not executed here. Inspection does not establish remote behavior, trust or standards certification.
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