Predict your child's adult height. Child Height Prediction Calculator is a free online tool that helps parents predict the height of their child based on the height of both parents.
XXTEA Encrypt & Decrypt is a free online tool that for Corrected Block TEA cipher Encrypt & Decrypt. XXTEA (Corrected Block TEA) is a block cipher designed to correct weaknesses in the original Block TEA.
XTEA (eXtended TEA) is a block cipher designed to correct weaknesses in TEA. XTEA Encrypt & Decrypt is a free online tool that for eXtended TEA cipher Encrypt & Decrypt.
TEA (Tiny Encryption Algorithm) is a block cipher notable for its simplicity of description and implementation, typically a few lines of code. TEA Encrypt & Decrypt is a free online tool that for Tiny Encryption Algorithm Encrypt & Decrypt.
Matrix Calculator is a free online tool that can perform various operations on matrices, such as finding the determinant, inverse, transpose, rank, power, sum, multiplication, and decomposition of matrices.
8-Bit Avatar Generator, a free online tool that could randomly generate 8-Bit pixelated style avatar images, and you could download it as your avatar image.
Countdown Days is a free online web app that could help you calculate and record the number of days before some important events and dates, so as not to let you miss any important events and dates.
Barcode Generator is a free online tool that allows you to create and customize barcodes for various purposes and generating high-quality barcodes that can be printed and scanned easily.