Aspect Ratio Calculator
Calculate and convert image or video aspect ratios
Barcode Generator
Generate standard 1D barcodes online for free
Checklist Builder
Build, tick off and save interactive checklists
Fake Name / Identity Generator
Generate random fake names and identities for testing
File Size Converter
Convert between bytes, KB, MB, GB and TB
ISBN Lookup
Look up book details by ISBN number
Reading Time Estimator
Estimate how long any text takes to read
Screen Resolution Info
See your device screen resolution and viewport size
Sleep Calculator
Find the best bedtime based on sleep cycles
Timer & Stopwatch
Multi-function countdown timer and stopwatch