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.

Countdown Timer Online

Countdown timer online supports online countdown. After the countdown, you can set the sound of playing alarm.

Unit Converter Online

Unit converter online supports the conversion of multiple units such as length, weight, area, volume data.

True Code/One's Complement/Two's Complement Calculator Online

Online true code, One's Complement code, and Two's Complement calculator, supporting the calculation of 8 bit, 16 bit, 32 bit, 64 bit, and any bits of integer number's true code, One's Complement code, and Two's Complement.

DateTime Type Converter Online

Online datetime type conversion tool, supporting TAI time, UTC time, GPS time (GPST), Beidou time (BDT), Unix timestamp, and local time conversion. This tool supports batch conversion, and the conversion results can be downloaded locally.

ASCII Code Table

ASCII code table online, query ASCII code 0-255 corresponding characters, including control characters, printable characters and extended characters.

Prime Factor Decomposition Online

The online free decomposition prime factor tool supports the decomposition of prime factors of large numbers, and gives the prime factor decomposition formula.

HTTP Basic Authentication Encrypt and Decrypt Online

Online HTTP Basic Authentication encryption and decryption tool, input user name and password, and generate basic authentication encryption request header. Enter the basic authentication encryption string to decrypt the user name and password.

Chinese Idiom Fill Online

Online chinese idiom fill in the blank tool, fill in the text of chinese idioms at any position, and search for chinese idioms. Support filling in one or more words.

Keyboard Event Information Online

Online keyboard key information tool, displaying key, code, keycode, location, modifiers and other key information of keyboard key events in web pages, and providing a key information query comparison table.

SCrypt Derive Key and Verify Online

Online SCrypt derived key and verification tool, using scrypt Password Based Key Derivation Function to derive keys based on password and random salt, supporting custom block size, CPU/memory cost, parallelization, derived key length and other parameters. Support online verification of SCrypt derived keys.

SM2 Signature and Verification Online

Online SM2 signature and verification tool, supporting signature generation and verification functions for SM2 algorithms.

SM2 Encryption and Decryption Online

Online SM2 encryption and decryption tool, supporting public key encryption and private key decryption of the SM2 algorithm. Supports input of public and private keys in PEM and HEX formats, and supports input data and output results in string, hex, and base64 formats.

String Escape Online

Online string escaping tool, supporting escaping rules for languages such as JSON, Java, JavaScript, XML, HTML, CSV, etc., and supporting custom rule string escaping. This tool also supports unescape of strings.

SM4 Encryption and Decryption Online

The online SM4 encryption and decryption tool provides online SM4 encryption and decryption test. The encryption and decryption supports six modes: CBC, CFB, OFB, CTR, GCM and ECB, and the input and output supports three formats: hex, string and Base64.

NTRIP Source-Table Parser and Generator Online

Online NTRIP Source Table parsing and generation tool, online parsing of ntrip source table, online generation of ntrip source table. Support STR, CAS, NET type source table.

Base Station Coordinate Calculation Online

Online base station coordinate calculation tool: input the geocentric-fixed coordinate XYZ of the rover station or the geodetic coordinate LBH of the rover station, input the ENU coordinate of the rover station relative to the base station, and calculate the XYZ or LBH coordinate of the base station. This tool supports batch calculation and multiple ellipsoids.

Character Set Encoding Information Query Online

Online character set encoding information query tool, which queries the encoding range supported by character set encoding and the Unicode code point range supported. This tool supports nearly a hundred character set encodings. Support querying characters within the character set encoding range or Unicode encoding range.

Random Number with Sum Generator Online

Online sum random number generation tool, supporting the random generation of random numbers within a specified range, with a sum equal to the specified value. Support random generation of integers and decimals, integers support generation of large integers, decimals support precision to 1000 decimal places.

Random Color Generator Online

Online random color generator, supporting the random generation of colors in all formats such as RGB, RGBA, HSL, HSV, CMYK, YUV, hex, etc. The generated colors support preview and download.

Simple Image Editor Online

Online simple image editor tool that supports online cropping, flipping, rotating, resizing, free drawing, adding text, adding icons, adding graphics, setting masks, adding filters and other image editing effects. It supports opening images in JPG, JPEG, PNG, WebP, BMP and other formats. The edited images can be downloaded in JPG, JPEG, PNG, WebP formats.

File Type Detection Online

Online file type detection, supporting the detection of hundreds of binary file formats. Support batch detection of file formats, and the detection results can be downloaded locally.

Chinese Retirement Age Calculator Online

Online retirement age calculator, supporting the calculation of retirement age for male employees, ordinary female employees (formerly 50 year old retired female employees), female employees in management, technology, and cadre positions (formerly 55 year old retired female employees), as well as the number of months of delayed retirement after the reform. This tool displays both flexible early retirement and flexible delayed retirement times.