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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.
Countdown Timer Online
Countdown timer online supports online countdown. After the countdown, you can set the sound of playing alarm.
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.
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.
GPA Calculator Online
The online GPA calculator can input course grades and credits to calculate the GPA. This tool supports multiple GPA calculation algorithms.
Volume Calculator Online
The online volume calculator supports the calculation of the volume of dozens of geometric shapes, such as Rectangular cuboid, cube, cylinder, cone, triangular cone, and displays the corresponding volume calculation formula.
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.
Datetime Format Converter
Online date time format conversion tool that converts date time into various formats such as ISO, RFC, Unix timestamp, UTC, Excel time, etc. Supports single time conversion and batch time conversion.
Handwritten Text Generate Online
Online handwritten text generation, input text, generate handwritten text, support multiple different fonts, spacing, color settings, and other parameters. Handwritten text results can be downloaded locally.
Coordinate System Convert Documentation
The coordinate system conversion instruction document introduces various coordinate systems and the applicability of various coordinate conversion tools on this website.
Common Ports And Protocols List
A complete list of common ports and protocols online, listing common port numbers, protocols used, service names, service descriptions and other information.
Latest Online
Modify Image DPI Online
Online modify image DPI tool, support single or batch modify image DPI (dots per inch), support modify jpg, jpeg, png, bmp, webp format images.
OTP Code Generator Online
Online OTP Password Generator, supports generating TOTP(Time-Based One-Time Password) and HOTP(HMAC-based One-time Password) passwords. The generated TOTP passwords can be imported into Google Authenticator and Microsoft Authenticator.
Data Masking Online
Online data masking tool that supports opening txt, csv, json, and excel data to perform hash masking, mask masking, replacement masking, transformation masking, encryption masking, and shuffling masking on sensitive data. The desensitized data can be downloaded locally.
KMAC Calculate and Verify Online
Online KMAC (KECCAK Message Authentication Code) calculation and verification tool, supporting online calculation and verification of KMAC. Support input data and keys, select KMAC-128 or KMAC-256 algorithm, set output bit length and other parameters.
BCrypt Derive Key and Verify Online
Online BCrypt derived key and verification tool, using the bcrypt Password Based Key Derivation Function to derive keys based on passwords and random salt, supporting custom cost and other parameters. Support online verification of BCrypt derived keys.
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.
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.
HKDF Derive Key and Verify Online
Online HKDF derived key and verification tool, using the HMAC-based Extract-and-Expand Key Derivation Function algorithm, derives keys based on the input key and random salt, supports custom hash functions, derived key length, carried information and other parameters. Support online verification of HKDF derived keys.
PBKDF2 Derive Key and Verify Online
Online PBKDF2 derived key and verification tool, using Password Based Key Derivation Function 2 to export keys based on passwords and random salt, supporting custom hash functions, derived key length, iteration times and other parameters. Support online verification of PBKDF2 derived keys.
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.
Child Height Calculator Online
Online height calculator for children, predicting and calculating their height based on multiple parameters, and providing height standard references for different age groups.
ULID Generator Online
Online ULID generator, supports batch generation of ULIDs, and the generated ULIDs can be downloaded locally.
