Math & Numbers
Convert acres to square meters with configurable decimal precision
acre-to-square-meterMath & Numbers
Convert acres to hectares with configurable decimal precision
acre-to-hectareMath & Numbers
Convert acres to square feet with configurable decimal precision
acre-to-square-feetMath & Numbers
Convert centimeters to millimeters with configurable decimal precision
cm-to-mmMedia
Convert AAC audio files to M4A (MPEG-4 Audio) format with quality and channel controls
aac-to-m4aMedia
Convert AAC audio files to OGG Vorbis format with quality and channel controls
aac-to-oggMath & Numbers
Calculate adjusted R squared from R squared, sample size, and predictor count
adjusted-r-squared-calculatorMath & Numbers
Calculate chi-square distribution PDF, CDF, and right-tail probability from a statistic and degrees of freedom
chi-square-distribution-calculatorMath & Numbers
Calculate the absolute value of positive, negative, or decimal numbers and explain the sign relationship
absolute-value-calculatorDesign
Generate a contrast-focused accessibility heatmap from a UI screenshot or HTML input and suggest stronger patch colors
accessibility-heatmap-generatorDevelopment
Audit HTML or a URL for common WCAG issues and export a structured PDF report grouped by severity
accessibility-audit-report-generatorDesign
Audit every color pair in a palette against WCAG 2.1 AA and AAA contrast thresholds and suggest adjustments
accessible-color-palette-contrast-checker