A lightweight, zero-dependency Java 17+ library for parsing and formatting human-readable durations (e.g., "2h 30m", "1d5h15m", "45min") to and from java.time.Duration.

<dependency>
    <groupId>com.petarmc</groupId>
    <artifactId>duration-parser</artifactId>
    <version>1.0.0</version>
</dependency>

import com.petarmc.durationparser.DurationParser;

DurationParser d = DurationParser.parse("1d 2h 30m");
System.out.println(d.duration());        // PT26H30M
System.out.println(d.toShortString());   // 1d2h30m
System.out.println(d.toCompactString()); // 1d 2h 30m
System.out.println(d.toLongString());    // 1 day, 2 hours and 30 minutes

• Units: days (d), hours (h), minutes (m, min), seconds (s)
• Mixed order, with or without spaces, case-insensitive, plural optional (e.g., "1 minute", "2 minutes")
• Examples: "2h 30m", "1d5h15m", "45min", "3600s", "2 hours 30 minutes", "1day 3hours"

• Short: 2h30m15s
• Long/natural: 2 hours, 30 minutes and 15 seconds
• Compact: 2h 30m

Apache License 2.0. See LICENSE file for details.