ISO 8601 Duration Converter

ISO 8601 duration format

• Format: PnYnMnDTnHnMnS — P = period, T = time separator
• Components after T are time (hours, minutes, seconds); before T are date (years, months, days)
• Zero components can be omitted (e.g., PT1H30M = 1 hour 30 minutes, no seconds)
• Decimal allowed on the smallest unit (e.g., PT1.5H)
• Weeks notation: P3W = 3 weeks (mutually exclusive with other date parts)

Where this format is used