What is a numeric HTML entity?

A numeric character reference like A that HTML/XML renders as the character with that Unicode code point (65 is the letter "A"). This tool produces the decimal form specifically.

Why reject the surrogate range 0xD800-0xDFFF?

Those code points are reserved for UTF-16 surrogate pairs and don't represent standalone characters on their own, so they're not valid values to encode as a single entity.

What's the maximum valid code point?

0x10FFFF (1,114,111 in decimal), the highest code point defined by the Unicode standard.

Can I get the hexadecimal entity form instead?

This tool only outputs the decimal form (&#N;). Use the HTML Entity to Integer Converter to parse either form back to a code point if you need to inspect hex entities.

Integer to HTML Entity Converter

Overview

Introduction

HTML and XML let you reference any Unicode character by its numeric code point using a numeric character reference like A for "A". This tool builds that reference from a plain list of integers.

It treats each integer as a Unicode code point and validates it against the ranges that are actually renderable as a single character.

What Is Integer to HTML Entity Converter?

A converter that takes a list of integers, one per line, and outputs the corresponding decimal numeric HTML entity for each, in the form &#N;.

Each integer is treated as a Unicode code point, the same numbering used throughout Unicode and HTML/XML numeric references.

How Integer to HTML Entity Converter Works

Each line is parsed as a whole number.

The tool checks that the value falls within 0 and 0x10FFFF (the full Unicode range) and isn't in the reserved UTF-16 surrogate range of 0xD800-0xDFFF.

Valid values are wrapped in the decimal numeric entity syntax: &#, the number, then a semicolon.

When To Use Integer to HTML Entity Converter

Use it when authoring HTML/XML content that needs to reference specific characters by code point, such as symbols not easily typed directly.

It's also useful for teaching how numeric character references work in markup languages.

Often used alongside HTML Entity to Integer Converter and Integer URL Encoder.

Features

Advantages

Validates the full valid Unicode code point range, catching out-of-range and surrogate values before they cause rendering issues.
Simple, direct mapping with no ambiguity about which numbering system is used (Unicode code points).

Limitations

Only produces the decimal entity form, not the hexadecimal form (&#xN;).
Doesn't validate whether a code point is assigned to an actual character in the current Unicode standard, only that it's in the structurally valid range.

Examples

Letter A

Input

Output

&#65;

Emoji code point

Input

Output

&#128512;

Best Practices & Notes

Best Practices

Double-check any code point above the Basic Multilingual Plane (above 0xFFFF) renders as expected in your target environment, since not all fonts support every character.

Developer Notes

Range validation happens before formatting: values are checked against `0` to `0x10FFFF` and the surrogate band `0xD800`-`0xDFFF` is explicitly excluded, since those code points have no meaning outside a UTF-16 surrogate pair.