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.

Countdown Timer Online

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

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.

Stopwatch Online

Online stopwatch timer supports online stopwatch timing, millisecond time, pause, mark and download functions.

China Workday Calculator

The online workday calculator calculates the working day and rest day dates according to the chinese national legal holiday arrangements.

Chinese Idioms Full List Online

The online chinese idiom full list supports idiom query, idiom explanation and idiom example viewing. You can fuzzy query idioms according to the words or phonetic abbreviations. This tool contains tens of thousands of chinese idioms and provides online query function of idiom dictionary.

Map Coordinate System Converter Online

The Map Coordinate System Converter Online tool supports the mutual conversion of longitude and latitude coordinates between WGS84 coordinate system, gcj02 coordinate system (Mars coordinate system) and bd09 coordinate system.

Fuel Consumption Calculator Online

The online fuel consumption calculator provides functions such as fuel consumption calculation per hundred kilometers, fuel consumption calculation per unit mileage, and cost calculation per unit mileage.

curl Commoand to Code

The online curl command to code tool supports the conversion of curl commands into java, golang, python, js, php, rust, dart and other programming language codes.

MySQL Generate JavaBean Online

MySQL generate JavaBean tool online, input MySQL DDL SQL statements, and generate corresponding java bean entity classes. The Java class name and field name conform to the naming convention.

Full and Half Width Characters Converter Online

Online full width and half width conversion tool, which converts punctuation, English letters, numbers, and other characters in input text to each other in full width and half width. The converted results support copying and downloading.

CSS Length Unit Converter

CSS length unit convert tool online that supports the conversion of values between CSS units such as px, pt, pc, in, mm, cm, Q, em, rem, vw, vh and other units.

Make Danmaku Online

Online handheld danmaku tool, supporting online generation of handheld danmaku and scrolling LED text. Support setting parameters such as text font, text color, text size, background color, background image, scrolling speed, etc. Support gradient color text, blinking text and other effects.

Flip Coin Online

Online coin flip tool, randomly flip coins to see if the result is heads or tails.

Ruler Online

Online ruler tool, supports measuring length online using centimeter ruler, inch ruler, and chinese chi ruler. Support setting parameters such as scale, ruler color, etc.

View and Remove Image Metadata Online

Online image metadata viewing and removal tool, supports viewing and removing various metadata information such as EXIF, GPS, IPTC, XMP, JFIF, etc. of images, and supports multiple image formats such as JPEG, JPG, PNG, WEBP, GIF, SVG, etc. This tool supports batch viewing and removal of image metadata.

CMAC Calculate Online

Online CMAC (Cipher based Message Authentication Code) calculation tool, supporting the use of AES, DES, SM4 and other algorithms to calculate CMAC values. Input and output support string, hex, base64, binary formats.

Electronic Wooden Fish Online

Online electronic wooden fish tool, supporting setting wooden fish color, tapping sound effects, automatic tapping and other parameters.

Geodetic Latitude to Geocentric Latitude Converter Online

Online tool for converting geodetic latitude to geocentric latitude, supporting the conversion between geodetic latitude and geocentric latitude. This tool supports latitude batch conversion, with latitude units supporting degrees, radians, and degrees, and supports selecting or customizing ellipsoid parameters. The conversion result can be downloaded locally.

Coordinate Unit Converter Online

Online coordinate unit conversion tool that supports inputting 2D (XY or BL) coordinates, 3D coordinates (XYZ or BLH), 4D coordinates (XYZT, BLHT), and converting the units of length, angle, or time of the coordinates. This tool supports batch conversion of coordinate units, and the conversion results can be downloaded.

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.

Random Roll Call Online

Online random roll call tool, fill out a list, and randomly call. Support setting list grouping, randomly selecting multiple results at once, and allowing multiple parameters such as duplicate extraction.

Batch Image Rotate Online

Online batch image rotation tool, supporting batch rotation of images in jpeg, jpg, webp, png, and svg formats. Supports arbitrary rotation angle settings, and the rotated images can be downloaded locally.

Random Name Generator Online

Online random name generator, generating random names online, supporting dozens of languages such as Chinese, English, French, Japanese, etc. It supports setting gender, number of generated names, surname, first name, and other parameters.