ETA calculator
Estimate when a repetitive task will finish from its throughput so far.
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About the eta calculator
Projects a completion time from how much work is done and how long it has taken, reporting throughput, time remaining and a finishing timestamp. Useful for migrations, backfills and batch imports where the progress bar is a log line.
Frequently asked questions
How accurate is the estimate?
It is a straight-line projection from the average rate so far. Jobs that slow as they progress — growing indexes, filling disks, rate limits — finish later than predicted, sometimes much later.
How do I improve the estimate?
Recalculate periodically using only recent progress rather than the whole run. A rate measured over the last few minutes tracks a changing workload far better than a lifetime average.