Media
Normalize multiple audio files to a target peak level with consistent volume across the batch
audio-batch-normalizeMedia
Batch rename audio files using patterns, text replacement, numbering, and case conversion. Returns renamed files as a ZIP download.
audio-batch-renameMedia
Record audio directly from your microphone with real-time waveform visualization and download options
audio-recorderMedia
Schedule automatic audio recording with countdown timer and configurable duration
audio-recorder-scheduledMath & Numbers
Convert yards to meters with configurable decimal precision
yard-to-meterMedia
Convert AMR (Adaptive Multi-Rate) audio files to MP3 format
amr-to-mp3Media
Convert GSM audio files to MP3 format
gsm-to-mp3Math & Numbers
Convert grams to ounces with configurable decimal precision
grams-to-ozMath & Numbers
Estimate academic credit hours from weekly lecture, lab, studio, term length, and contact-hour rules
credit-hour-calculatorMath & Numbers
Convert grams to kilograms with configurable decimal precision
grams-to-kgMath & Numbers
Calculate a weighted course grade from assignment scores and category weights
grade-calculatorMath & Numbers
Calculate credit-weighted GPA from course names, credit hours, and letter or numeric grades
gpa-calculator