স্বাস্থ্য ও জীবনযাপন

Sleep Cycle Bedtime & Wake Calculator

Bedtime and wake-up times aligned to 90-minute sleep cycles, accounting for fall-asleep latency.

Password Strength & Entropy Calculator

Calculate password entropy in bits and estimated brute-force time across attacker capabilities.

Bra Size Converter (UK / US / EU / AU / JP)

Convert bra sizes between UK, US, EU, AU and JP systems with sister sizes when band/cup doesn't fit.

Shoe Size Converter (US / UK / EU / JP / CN)

Convert shoe sizes between US, UK, EU, Japanese cm and Chinese systems for men, women and kids.