Sensor CSV time alignment
Align sensor CSV recordings by timestamp, apply known time offsets and find unmatched samples. Export a shared timeline without interpolation.
Your results
Sensor CSV time alignment
Separate data loggers rarely record samples at exactly the same instant. Choose one recording as the reference timeline, enter known clock offsets, and set the maximum allowed timestamp difference. The nearest acceptable sample is copied without interpolation. Empty output cells reveal unmatched samples, while offset columns show how far each match was from the reference time.
How to use this tool
- Choose your source file, drag it into the upload area, or import a direct public file URL.
- Review the settings and create your result.
- Download and check the output before using it.
Supported input formats
CSVTSV
Available settings
- Timestamp column
- Value column
- Timezone for timestamps without an offset
- Offsets in seconds, in file order
- Reference file number
- Matching tolerance in seconds
Output and limitations
Align sensor CSV recordings by timestamp, apply known time offsets and find unmatched samples. Export a shared timeline without interpolation.
All files must use the mapped timestamp and numeric value headers. Use ISO date-times. Enter one offset in seconds for each file in the displayed order. Output includes matching offsets; blank values mean no sample met the tolerance.
What should I check before using the result?
All files must use the mapped timestamp and numeric value headers. Use ISO date-times. Enter one offset in seconds for each file in the displayed order. Output includes matching offsets; blank values mean no sample met the tolerance.
Where are my files processed?
Selected files are processed in your browser. Importing a URL uses the download service to retrieve the remote file.
What if processing fails?
Check the supported formats and file limits, then try a smaller file. Keep an original copy. A clear error message will explain an unsupported input or an unavailable processing service.