Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.
Time Duration Formatter
Format time durations into human-readable strings.
FreeRuns in browsertime duration formatterformat duration
Cmd/Ctrl+Enter Primary actionCmd/Ctrl+Shift+L Load sampleCmd/Ctrl+Shift+X Clear/resetCmd/Ctrl+Shift+C Copy result
About Time Duration Formatter
Format time durations into human-readable strings. Format time durations into readable strings online for free. Convert seconds to short, long, clock, and ISO 8601 duration formats like PT2H30M automatically. Handles Unicode text correctly, including emoji and multi-byte characters. Processes text instantly in your browser with no practical size limits. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.
Related tools: Date Formatter, Hours to Decimal Converter, Time Addition Calculator
How to Use Time Duration Formatter
- Paste or type your text into the input area.
- Select the transformation you want to apply.
- Copy the transformed result from the output area.
Frequently Asked Questions
What is Time Duration Formatter?
Format time durations into readable strings online for free. Convert seconds to short, long, clock, and ISO 8601 duration formats like PT2H30M automatically.
Does the tool preserve formatting?
The tool preserves whitespace, line breaks, and structural formatting while applying the selected transformation. Only the targeted text characteristics are changed, leaving your overall layout intact.
Can I process large texts?
Yes, because all processing happens in your browser there are no server-imposed size limits. Performance remains fast for texts up to several hundred thousand characters on modern devices.
What character encodings are supported?
The tool handles Unicode text correctly, including emoji, accented characters, and multi-byte scripts such as Chinese, Japanese, and Arabic. Any text that your browser can display can be transformed.
Is Time Duration Formatter free to use?
Yes, this text tool is entirely free. There is no signup, no account required, and no limit on how much text you can process.
Is my data safe when using Time Duration Formatter?
Yes, all text processing happens locally in your browser. Your text is never sent to any server, so your content remains completely private and secure.