Time Duration Parser: Convert Human-Readable Durations into Milliseconds

Time Duration Parser is a lightweight utility that converts human-readable time durations into milliseconds.

It is designed for situations where durations are expressed in formats like “5m”, “2h”, or “1d” and need to be converted into a consistent numeric value for scheduling, timing, or validation.

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GitHub - brandonhimpfen/time-duration-parser: Parse human-readable time durations like 5m, 2h, and 1d into milliseconds.

Parse human-readable time durations like 5m, 2h, and 1d into milliseconds. - brandonhimpfen/time-duration-parser

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The Problem

Time durations are often represented in shorthand formats across applications.

Configuration files may use values like “10s” or “15m”. User inputs may vary in format. Different systems may expect durations in milliseconds while receiving strings instead.

Without a consistent approach, this leads to repeated parsing logic and potential inconsistencies in how time is handled.

The Approach

Time Duration Parser provides a simple and predictable way to convert duration strings into milliseconds.

Instead of manually interpreting time units throughout an application, this utility standardizes the conversion process and ensures consistent behavior across workflows.

The focus is on clarity and reliability rather than flexibility.

Supported Formats

The parser supports common time units, including:

• milliseconds (ms)
• seconds (s)
• minutes (m)
• hours (h)
• days (d)

Inputs are case-insensitive and normalized during parsing.

Why This Matters

Handling time consistently is essential for many systems.

When durations are normalized into milliseconds, it becomes easier to:

• configure timeouts and delays.
• schedule tasks and jobs.
• validate user input.
• ensure consistent behavior across environments.

This reduces ambiguity and helps prevent subtle timing-related bugs.

Positioning

Time Duration Parser is intentionally minimal.

It focuses on a single responsibility: converting human-readable durations into milliseconds. It does not attempt to provide a full date or time manipulation library.

This makes it easy to integrate into existing systems without introducing unnecessary complexity.

Example Use Cases

This utility is useful in any context where time durations need to be interpreted programmatically.

Common scenarios include:

• configuring API timeouts.
• scheduling background jobs.
• handling retry intervals.
• parsing user-defined timing inputs.

Looking Ahead

Time Duration Parser is designed as a focused utility.

Future enhancements may include additional unit support, stricter validation options, and extended parsing flexibility, while maintaining a clear and minimal interface.