PhDino Calc 95
Free engineering calculators that teach, not just compute
What it does
PhDino Calc 95 is a free, browser-based toolkit of structural, mechanical, electrical, and geotechnical calculators, paired with a wiki and step-by-step project guides. It's built for students and hobbyists tackling medium-complexity problems — not a replacement for professional engineering tools, but a learning-first companion for understanding *why* the numbers come out the way they do, with live diagrams alongside every calculation.
97 free engineering calculators across 13 fields — each with a live diagram, a plain-English wiki article, and step-by-step project guides. No sign-up; runs in your browser.
PhDino is a free collection of 97 engineering calculators across 13 fields: structural, mechanical, electrical, and geotechnical engineering, plus civil and construction materials, chemistry, solar and renewable energy, manufacturing and machining, aerospace, biomedical, motorsport, and digital logic. Everything runs in your browser — no account, nothing to install, and no data leaves your device. A few calculators to start with: Beam Deflection , Ohm's Law , Column Buckling , Concrete Volume , Solar Array Sizing , BMI Calculator . Or browse all 97 by field below. Every calculator does three things at once: it computes results in real time as you type (no "calculate" button), it draws a…from phdino.com
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