Batch Unix Timestamp Converter
Convert a list of Unix seconds to UTC ISO timestamps.
ISO Duration Calculator
Convert ISO day/time durations to total seconds and readable units.
Processed locally in your browser.
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How to use ISO Duration Calculator
- Choose Example to see valid input, or enter your own data.
- Run the tool and review the result. Invalid inputs show a helpful error.
- Copy or download the output, or use Reset to clear the workspace.
Practical example
P2DT3H4M5.5S
Common question
What should I know before using this tool?
Supports days, hours, minutes and seconds. Calendar years and months are rejected because their duration varies.
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