# ASCII Converter

> ASCII converter: turn any text into ASCII character codes and convert ASCII codes back into readable text instantly. Free, private, in-browser, no signup.

- **Canonical URL:** https://boringtoolskit.com/ascii-converter/
- **Category:** Converters
- **Evidence level:** authored-methodology
- **Reviewed:** 2026-09-20
- **Last verified:** 2026-10-12
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

## How it works

ASCII code = the character code unit returned for each input character (String.charCodeAt). Printable ASCII runs 32-126, so "A" = 65 and "a" = 97; codes outside that range are control or extended characters.

## Assumptions

- Inputs are treated as exact decimal values.
- Standard (not historical or survey) unit definitions are used.
- The calculation uses the factors at the precision shown in the formula panel; rounding beyond that is display-only and adds no accuracy.

## Common questions

### Why do letters and symbols give different code ranges?

Printable ASCII occupies 32-126: digits start at 48 ("0"), uppercase A at 65, lowercase a at 97. Codes below 32 are control characters (tab, newline) and are not printable text.

## Sources

- [RFC 20 - ASCII Format for Network Interchange](https://www.rfc-editor.org/rfc/rfc20)

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