Is this the same as Convert a String to ASCII?

Not quite. This tool covers the full Unicode range, while Convert a String to ASCII rejects any character above code point 127, since ASCII is a strict subset of Unicode.

Does it use code points or UTF-16 code units?

Code points, via codePointAt(), which correctly handles surrogate pairs for characters outside the Basic Multilingual Plane, like most emoji.

How many numbers will an emoji produce?

One. Code-point-aware iteration treats an emoji as a single character, so it yields one large value rather than the two surrogate halves a UTF-16 based tool would report.

String to Decimal Converter - Text to Character Codes Online

Overview

Introduction

Looking up a character's Unicode code point is a common step when debugging encoding issues or cross-referencing a Unicode chart.

This tool lists every character's decimal code point directly.

What Is String to Decimal Converter?

A converter that encodes each character as its decimal Unicode code point, space-separated, covering the full Unicode range including emoji and non-Latin scripts.

It runs entirely client-side as part of this site's String Tools collection, so nothing you paste is ever uploaded to a server.

How String to Decimal Converter Works

Each character's code point is read via codePointAt() and formatted as a decimal number.

The transformation happens synchronously in JavaScript the moment you type, with no network round trip involved.

When To Use String to Decimal Converter

Use it to look up a character's Unicode code point for a chart reference, or to debug an encoding mismatch.

It's a fast way to get the answer without opening a code editor, a REPL, or writing a one-off script just to check.

Often used alongside Decimal to String Converter and String to ASCII Converter.

Features

Advantages

Covers the full Unicode range, not just ASCII.
Uses code-point-aware iteration, correctly handling emoji and other supplementary-plane characters.
Applies no padding, so each value is only as long as it needs to be and small code points stay easy to read.

Limitations

Doesn't show the character's name or Unicode block, only its numeric code point.
Values vary widely in width, so the output does not line up in columns the way the zero-padded hex and binary converters do.

Examples

Converting short text

Input

Hi

Output

72 105

'H' is code point 72, 'i' is code point 105.

Best Practices & Notes

Best Practices

Cross-reference the resulting code points against a Unicode chart if you need the character's name or block.
Use decimal when looking values up in documentation that lists them that way, and hex when matching the U+ notation of Unicode charts.
Keep the space separators, since values of differing length cannot be split apart again without them.

Developer Notes

This is a thin wrapper around a shared radix-encoding helper called with radix 10 and no minimum padding, sharing its core logic with the binary, octal, and hex conversion tools.

String to Decimal Converter Use Cases

Looking up a character's Unicode code point
Debugging an encoding mismatch in text data
Cross-referencing text against a Unicode chart

Common Mistakes

Confusing decimal code points with UTF-8 byte values; use Convert a String to Bytes for the latter.
Comparing these values against a byte count and finding they disagree, which is expected for any text above the ASCII range.

Tips

Use Convert Decimal to a String to decode the result back to text.
A value above 65535 marks a supplementary-plane character such as an emoji, which is the quickest way to spot them in a long list.

String to Decimal Converter