Popular Recommendation
Random Number Generator Online
The online random number generator supports the generation of random integer values and random floating-point values. When unique is specified, all generated random numbers are not repeated.
Stopwatch Online
Online stopwatch timer supports online stopwatch timing, millisecond time, pause, mark and download functions.
Unit Converter Online
Unit converter online supports the conversion of multiple units such as length, weight, area, volume data.
Countdown Timer Online
Countdown timer online supports online countdown. After the countdown, you can set the sound of playing alarm.
Text File Split Online
Online text file splitting, open the text file and split it into multiple files based on file size, number of characters, number of lines, number of files, etc. The split file can be downloaded locally.
IP/IPv6 Address Query
IP/IPv6 Address Query supports the query of IP and IPv6 addresses. The queried address information includes country, province, city, isp and other information.
Day Calculator
The online day of the year calculator calculates the date of the day and week of the year. Calculate the day and week of the calculation.
Online Foreigner Permanent Residence ID Card Number Generator
The online tool for generating permanent residence ID card numbers in China for foreigners can generate 18 new versions of permanent residence ID card numbers online. It supports user-defined countries, accepting provinces, birth dates and other parameters. The generated results can be downloaded locally.
MD5 Encryption
Calculate the MD5 hash value of the text, and the output result is expressed in HEX string and Base64 format. The input text will be converted into byte array using the selected character set, and then the MD5 hash value of the binary data will be calculated, and then the hash value will be expressed as HEX string and Base64 string.
Flip Coin Online
Online coin flip tool, randomly flip coins to see if the result is heads or tails.
Make Nightingale Chart Online
Make nightingale charts online for free. Make nightingale chart online, support filling in data online or uploading excel files, and support exporting the generated nightingale chart to JPG, PNG and PDF files.
Java 14 Documentation
Java 14 document online provides java 14 (Java SDK 14) document online viewing and java 14 API online viewing.
Latest Online
Trigonometric Function Calculator Online
Online trigonometric function calculator, supporting trigonometric and inverse trigonometric function calculations. Angle units support degrees and radians, and support setting result accuracy.
JSON to Markdown Table Converter Online
Online JSON to Markdown table tool, supporting the mutual conversion between JSON and Markdown tables. It supports expanding nested objects and arrays of JSON data, and supports escaping special characters in Markdown.
CIDR Aggregate Online
Online CIDR aggregation calculator, supporting the aggregation of multiple IPs or multiple sub-CIDRs into one CIDR, and supporting both IPv4 and IPv6.
JSON Key Rename Online
Online JSON key renaming tool, supports renaming keys of input JSON data, supports lowerCamelCase,UpperCamelCase,lowercase,UPPERCASE,lower_snake_case,UPPER_SNAKE_CASE,kebab-case, There are various renaming methods such as custom renaming rules. Support adding prefixes or suffixes to keys and setting rules for handling key name conflicts.
Number Sort Online
Online number sorting tool that supports sorting a large number of input numbers and supports multiple ways of inputting or extracting numbers. Supports sorting very large integers and very large floating-point numbers.
ChaCha20 Encrypt and Decrypt Online
Online ChaCha20 Encryption and Decryption Tool, supporting ChaCha20, XChaCha20, ChaCha20-Poly1305, and XChaCha20-Poly1305 algorithms for encryption and decryption, with input data formats including string, hex, and base64, and the ability to select from multiple character sets.
Information Entropy Calculator Online
The online information entropy (Shannon entropy) calculator supports calculating the entropy of binary data, text data, and probability distributions, and supports setting the logarithmic base to 2, e, and 10. Support setting result precision.
Protocol Buffers Encode and Decode Online
Online Protocol Buffer Encoding and Decoding Tool, supporting online decoding of protocol buffer data and online encoding of protocol buffer data. Supports opening multiple proto definition files and decoding and encoding multiple messages.
Geohash Encode Decode Online
Online Geohash encoding and decoding tool, supports Geohash encoding and decoding of latitude and longitude positions, supports querying all coordinate points within a specified radius of the center point, and supports querying the closest coordinate point to the center point.
BaseN Encode and Decode Online
Online BaseN encoding and decoding tool, supporting BaseN encoding and decoding of data such as string, hex, base64, files, etc., supporting algorithms such as base2, base8, base16, base32, base64, base58, base85, base91, base100, etc. This tool also supports custom algorithms.
MessagePack and JSON Converter Online
Online Message Pack and JSON conversion tool, supporting the conversion between binary data in Message Pack format and data in JSON text format. Message Pack data supports input formats such as hex, base64, byte arrays, etc.
Fetal Weight Calculator Online
Online fetal weight calculator predicts and calculates fetal weight based on parameters such as uterine height, abdominal circumference, biparietal diameter, and femur length. Support viewing the distribution of fetal weight, biparietal diameter, abdominal circumference, femur length, and other parameters at different weeks.
