IQ MASTERPro
100% Free & Instant Results•
Scientific Unit Converter (100+ Metric & Imperial Units)•
Standardized Psychometric Model (Mean 100, SD 15)•
Precision Engineering Tools & SI Matrices•
Zero Ad Clutter • Local-First Privacy•
Offline PWA Application • 0ms Latency•
Item Response Theory (IRT) Calibrated•
Verifiable PDF Certified Report•
100% Free & Instant Results•
Scientific Unit Converter (100+ Metric & Imperial Units)•
Standardized Psychometric Model (Mean 100, SD 15)•
Precision Engineering Tools & SI Matrices•
Zero Ad Clutter • Local-First Privacy•
Offline PWA Application • 0ms Latency•
Item Response Theory (IRT) Calibrated•
Verifiable PDF Certified Report•
Frequently Asked Questions

Psychometrics & Scientific Methodology FAQ

Everything you need to know about fluid intelligence, scoring normalization, and privacy.

The Scientific Unit Converter covers 10 primary scientific and engineering domains: Length (metric nanometers to light years & imperial yards), Mass & Weight (micrograms to metric tonnes, lbs, stones), Thermodynamic Temperature (°C, °F, Kelvin, Rankine), Fluid & Gas Pressure (Pascals, bar, psi, Torr, standard atmospheres), Energy & Work (Joules, kWh, calories, eV, BTU), Power (Watts, hp), Digital Data (Bytes, MB, GiB, Terabytes), Speed, Force (Newtons, lbf), and Cross-sectional Area.