Time-Series Log Viewer
Plot timestamped CSV measurements over time. Zoom into a range, spot gaps and download a summary of the selected data.
How can I compare measurements that use different units?
Map the time column and select up to eight signals. Use stacked charts to preserve original units, or normalize each signal within the chosen range using a z-score or min–max scale. Linked cursors compare matching timestamps; statistics always describe the original values.
Your data, clearly.
On your deviceLimits: 10,000 rows, eight signals, 50 columns and 500,000 characters.
A little data. A clearer picture.
Choose your data and settings, then draw the chart to explore the details.
Three simple steps
How to use Time-Series Log Viewer
Paste or open a dataset, then map the relevant columns.
Draw the chart, inspect the warnings, and zoom into the details.
Download an SVG or PNG image, the report, or a reusable project.
Common questions
Good to know
Understand the result.
Keep the original.
Is this tool free, and are my files uploaded?
This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.
What are the limits and details?
ISO dates use UTC; date/time values must include a timezone. Invalid times are excluded and counted. Repeated timestamps remain separate rows, and missing measurements remain gaps. Normalization applies within the selected range; units are supplied by your column labels. Markers are sampled to at most 1,000 per signal on dense charts.
Limits: 10,000 rows, eight signals, 50 columns and 500,000 characters.