Client-side ProcessingUpdated 2026-02-11Report issue

Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.

12-Hour to 24-Hour Converter

Convert 12-hour AM/PM time to 24-hour format and back.

FreeRuns in browser12 hour to 24 houram pm to 24 hour

Converts between 12-hour AM/PM and 24-hour clock formats.

12-Hour Time

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24-Hour Time

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Cmd/Ctrl+Enter Primary actionCmd/Ctrl+Shift+L Load sampleCmd/Ctrl+Shift+X Clear/resetCmd/Ctrl+Shift+C Copy result

About 12-Hour to 24-Hour Converter

Convert 12-hour AM/PM time to 24-hour format and back. Convert 12-hour AM/PM to 24-hour clock format and back online for free. Enter any time value for instant bidirectional conversion between time formats. Implements standard encoding and decoding algorithms that produce output compatible with all major programming languages and platforms. Supports both encoding and decoding in a single interface. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.

How to Use 12-Hour to 24-Hour Converter

Enter text or data in the input field.
Click Encode or Decode depending on your goal.
Copy the output to your clipboard.

Frequently Asked Questions

What is 12-Hour to 24-Hour Converter?

Convert 12-hour AM/PM to 24-hour clock format and back online for free. Enter any time value for instant bidirectional conversion between time formats.

What encoding standards are used?

This tool follows the official encoding specifications, including RFC standards where applicable. The implementation matches widely-used libraries so the output is compatible with other systems and programming languages.

Can I encode binary data?

The tool primarily handles text input, but many encoding formats such as Base64 are designed to represent binary data as text. You can paste Base64-encoded binary data for decoding or encode text into a binary-safe format.

Is the encoding reversible?

Yes, all encoding operations provided by this tool are fully reversible. You can encode text and then decode it back to get the exact original content without any data loss.

Is 12-Hour to 24-Hour Converter free to use?

Yes, encoding and decoding are completely free with no usage limits. The tool runs in your browser and requires no registration.

Is my data safe when using 12-Hour to 24-Hour Converter?

Yes, all encoding and decoding happens locally in your browser. No data leaves your device, so your input remains completely private.

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