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79 online tools , 321608 times of use

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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.

been used 43390 times

CRC calculation online

The cyclic redundancy check calculation function of CRC8, CRC16, CRC32 and crc64 is provided to detect or verify possible errors after data transmission or saving. It uses the principle of division and remainder to detect errors. When calculating, pay attention to different algorithms (including polynomial, initial value, whether to reverse, etc.), and the calculation results will be different.

been used 42779 times

Java regular expression test

Java regular expression online testing provides Java regular expression online matching and replacement functions. By controlling parameter settings, you can control the behavior of regular expressions, such as ignoring case, multiline mode, etc.

been used 15009 times

Morse Code Convert Online

Morse Code Convert Online supports encoding text (including Chinese) into Morse code and decoding Morse code into ordinary text. Text supports all unicdoe characters.

been used 11560 times

String hex converter

String hex conversion (hex to string, string to hex) converts the string into a byte array using the selected character set. Each byte in the byte array is encoded into two hexadecimal characters to obtain the hex string result.

been used 5293 times

Python 3 Documentation

Python 3 document online provides Python 3 document online viewing and Python 3 API online viewing.

been used 562 times

Simplified and Traditional Chinese Converter

Simplified and Traditional Chinese Converter tool, which provides text conversion between simplified chinese, traditional chinese, Taiwan traditional and Hong Kong traditional chinese. Traditional Chinese character conversion supports standard conversion and common language replacement conversion.

been used 413 times

Exchange Rate Query

The real-time exchange rate query tool supports online query of real-time exchange rates of RMB against US Dollar, Euro, Japanese Yen, Ruble, Pound and other currencies.

been used 365 times

Latest Online

China Portfolio Mortgage Calculator

Online portfolio mortgage calculator to calculate the monthly repayment amount and interest expenditure of provident fund loan and commercial loan portfolio mortgage.

been used 53 times

Provident Fund Loan Calculator

Provident fund mortgage calculator, online calculation of provident fund housing loan monthly repayment amount, total interest, etc. Two calculation methods of equal principal and equal principal and interest are supported.

been used 64 times

Chinese Commercial Mortgage Calculator

The commercial loan mortgage calculator supports the calculation of the monthly repayment amount and total interest of the mortgage according to the loan amount or house price. The calculation method of housing loan supports the equality corpus and interest and the equality corpus.

been used 562 times

SSL Certificate Generator

Online free SSL certificate generator, online generation of SSL domain name certificate and IP certificate for learning and testing. You can use the generated certificate to publish HTTPS sites.

been used 138 times

Free Public MQTT Broker Online

The public free mqtt broker online supports mqtt, mqtts, ws, wss and other protocol access, and supports mqtt 3.1.1 and 5.0 standards.

been used 196 times

MQTT WebSocket Client Online

Mqtt websocket online testing tool connects to mqtt broker through websocket, subscribes to message topics, and sends and receives mqtt messages.

been used 228 times

SQL Format / Compress

Online sql statement formatting (beautification) and compression tools support the formatting and compression of SQL statements such as SQL-2011, MariaDB, MySQL, PostgreSQL, IBM DB2, Oracle PL/SQL, Spark, SQL Server T-SQL, etc.

been used 128 times

Explore Code Repository

Search the code repository and code snippets of dozens of programming languages such as java, c#, golang, js and python online. edit and run code online.

been used 385 times