Design

Convert HSV color values to HEX format for web design

Design

Convert HSV color values to HSL for screen display

Design

Convert HSV color values to LAB for professional color management with alpha channel support

Design

Convert HSV color values to LCH for professional color management

Design

Convert HSV color values to RGB for screen display

Design

Convert HSV color values to XYZ for professional color management with alpha channel support

AI Tools

Audit sentiment toward each named book or entity in pasted JSON or CSV. Separate praise, critique, reading intent and neutral mentions before counting recommendations.

Date & Time

Converts any date between Gregorian, Julian and the fixed Hebrew calendar: molad of the month, the four dehiyyot postponement judgments, keviyah year type, the weekly Torah portion (parasha) for Israel or Diaspora, the Omer count, the full festival schedule of the Hebrew year and the Anno Mundi era in Hebrew letters.

Fitness

Scores today’s recovery 0-100 from morning HRV (rMSSD/SDNN) and resting heart rate z-scores against your own rolling baseline, blended with last night’s sleep and yesterday’s session RPE — with a green/amber/red tier, meaningful-change (0.5 SD) detection, baseline noise (CV) check, and an intensity-ceiling training recommendation.

Cryptography

Compute and audit MACs across HMAC-SHA-2/SHA-3, keyed BLAKE2, BLAKE3, KMAC and Poly1305 with official known-answer self-tests, key/tag-length linting and a cross-construction compatibility matrix.

Science & Education

C = k_H·P in three modes with preset 25 °C Henry constants, molar-mass mass readout and atm/kPa/torr pressure.

Health

Pick one of eight bench buffer systems, enter target pH, concentration and volume, and get the Henderson-Hasselbalch acid/salt split with weighable masses, temperature-corrected pKa, buffer capacity and ionic-strength estimate.