Unicode Escape Sequence Converter
Free online Unicode converter. Encode and decode text to Unicode format easily.
Unicode Escape Examples Developers Actually Debug
Use this converter when you need to inspect escaped JSON strings, copy emoji safely into source code, or confirm whether a displayed character is one code point or a surrogate pair.
Chinese text in JSON
- Input
你好- Output
\u4F60\u597D
Useful when an API log stores non-ASCII text as JSON escape sequences.
Emoji code point
- Input
😊- Output
\uD83D\uDE0A
Emoji are often outside the basic multilingual plane, so a code-point form is clearer than two separate surrogate units.
Literal escape string
- Input
\u4F60\u597D- Output
你好
Paste escaped output from logs to confirm the readable text before changing source data.
Mixed API message
- Input
status=成功 ✅- Output
\u0073\u0074\u0061\u0074\u0075\u0073\u003D\u6210\u529F\u0020\u2705
Mixed ASCII, CJK, and symbols are common in webhook payloads and localization files.
Unicode Escape Debugging Checklist
- If decoded text still shows backslashes, the string may be double-escaped and needs one more JSON/string unescape step.
- If an emoji becomes two broken symbols, the original system split a surrogate pair instead of handling the full code point.
- If JSON parsing fails, check that every escape uses four hex digits or a code-point notation such as U+1F60A.
- If browser display differs from database output, compare Unicode code points first, then check UTF-8 storage and collation.
Frequently Asked Questions
What is Unicode?
Unicode is a universal character encoding standard that assigns a unique code to every character, regardless of platform, program, or language.
Why is Unicode important?
Unicode ensures consistent encoding, representation, and handling of text, enabling seamless communication and data exchange across different systems and languages.
How do I use Unicode?
You can use Unicode by referencing its code points in your applications or by using tools that support Unicode encoding.
How does Unicode work?
Unicode assigns a unique numeric value, called a code point, to each character. These code points are written in the format "U+XXXX", where "XXXX" is a hexadecimal number. For example, the code point for the letter "A" is U+0041.
What are Unicode blocks?
Unicode organizes characters into blocks based on their scripts or usage. For example, the "Basic Latin" block contains characters used in English, while the "CJK Unified Ideographs" block contains Chinese, Japanese, and Korean characters.
What is UTF-8 and how is it related to Unicode?
UTF-8 is a variable-length character encoding for Unicode. It encodes each Unicode character as one to four bytes, making it efficient for text that primarily uses ASCII characters while still supporting all Unicode characters.
How to convert text to Unicode in different programming languages?
Here are examples of converting text to Unicode in various programming languages.
Java
String text = "A";
String unicode = String.format("\\u%04x", (int) text.charAt(0));
System.out.println(unicode); // Output: \u0041PHP
$text = "A";
$unicode = sprintf("\\u%04x", ord($text));
echo $unicode; // Output: \u0041Go
package main
import "fmt"
func main() {
text := "A"
unicode := fmt.Sprintf("\\u%04x", text[0])
fmt.Println(unicode) // Output: \u0041
}JavaScript
const text = "A";
const unicode = "\\u" + text.charCodeAt(0).toString(16).padStart(4, "0");
console.log(unicode); // Output: \u0041Python
text = "A"
unicode = f"\\u{ord(text):04x}"
print(unicode) # Output: \u0041What are the best practices for Unicode encoding queries?
When performing Unicode encoding queries, it's recommended to use professional unicode conversion tools. You can look up specific character code points through unicode encoding tables, or use unicode converters for batch conversion. This is very important for internationalization development and multilingual support.
What are the application scenarios for Unicode conversion tools?
Unicode conversion is widely used in: website internationalization, multilingual database storage, mobile app development, document processing systems, etc. Developers frequently need unicode encoding conversion to handle character display issues in different languages.
How to use Unicode character lookup functionality?
Unicode character lookup can help find the encoding value of specific characters. Through unicode encoders, text can be converted to standard Unicode representation format, facilitating transmission and storage across different systems. Supports Chinese, English, emoji and all characters.