HEATKEYS

calculators, engineering, mechanical, electrical, electronics, design, construction, manufacturing, consultant, layout, software, chemical, plastic, polymers

Online reference and resources - web development, software programming, electrical formulas.

CSGNetwork Free Information. Calculators, Converters, Glossary, Open Source Code... find something. Most pages require JavaScript.

The Engineer

Online Conversion is a resource for weights, measures, calculators, converters.

Online calculators for electronics

online calculators for house and home, car and travel, money and personal finance, health and medical, business and management, science and engineering, and mathematics and statistics.

The SpeedoHealer is an inexpensive, convenient and very simple way to calibrate your speedometer and odometer. Speedometer calibration, speedometer calibrator

Electrical Engineering Community for hardware designers with design tools, projects, articles, jobs, events, discussions, and social networking.

DIY Audio Projects documents several DIY HiFi audio projects for Audiophiles. Projects include vacuum tube amplifiers, gainclones (chip amps), mosfet amps, preamplifiers, loudspeakers and audio cables.

A Free Online Calculator, Quick and Easy, and Full Screen!