Math & Numbers
Count significant figures and round numbers to a target number of significant digits
sig-fig-calculatorMath & Numbers
Calculate square roots, check whether a value is a perfect square, and verify the squared result
square-root-calculatorData Processing
Extract a section of an array using lodash _.slice
slice-arrayData Processing
Find the insertion index in a sorted array using lodash _.sortedIndex
sorted-indexData Processing
Remove duplicates from a sorted array using lodash _.sortedUniq
sorted-uniqueData Processing
Remove duplicates from a sorted array using lodash _.sortedUniqBy
sorted-unique-bySecurity
Detect common SQL injection attack patterns in input strings
sql-injection-detectorValidation
Check if a string contains special characters like !@#$%^&*()_+ and identify which ones are present
special-character-validatorFinance
Calculate profit/loss for stock call and put options
stock-option-calculatorMedia
Upmix a stereo file to a surround sound format
stereo-to-surroundMedia
Free online stereo to mono converter: mix the left and right channels into one centered mono track. Download as MP3, WAV, FLAC and more.
stereo-to-monoData Visualization
Generate interactive stacked bar charts to visualize categorical data composition, perfect for comparing multiple data series across categories
stacked-bar-chart