Why convert durations into several units?
Because humans and systems often describe the same interval in different units and formats.
Duration Converter
Convert durations across time units
Units, Time & Number
π 100% client-side β your data never leaves this pagePage mode
Input
Quick CTA
Enter seconds or a duration string first to convert between numeric and human-readable formats immediately; examples stay in Deep.
Output
Converted duration values will appear here
π 100% client-side β’ duration conversion only
Next step workflow
Page reading mode
Quick keeps the summary, direct answers, and next steps so you can validate fit and get a result faster.
About this tool
Convert durations from numeric values or human strings like 1d 2h 30m into multiple units at once: milliseconds, seconds, minutes, hours, days, and weeks. The tool also outputs a compact human representation and ISO 8601 duration format for API contracts and scheduling payloads. It is useful in backend timeout tuning, analytics interval normalization, and automation window planning. Everything runs client-side.
Direct Answers
Should human duration strings be treated loosely?
Only if the parser clearly understands them; ambiguous strings are a common source of mistakes.