WhatEquation?

Stop guessing which equation applies. Describe your problem in plain language; "pressure drop in rough pipe," "is this column going to buckle," "spring constant"; and WhatEquation? finds the right equation, fast.

HOW IT WORKS Type what you're actually trying to solve, not a textbook formula name. WhatEquation? searches by meaning, not just keywords, so you don't need to remember the exact term to find what you need.

For every equation, you get: - The formula itself, clearly formatted - Key assumptions: know when the equation actually applies - Every variable defined, with units - NCEES handbook search terms, so you can cross-reference fast

WHAT'S COVERED 200+ equations across the disciplines engineers actually use day to day:

- Fluid Mechanics - Heat Transfer - Thermodynamics - Mass Transfer - Reaction Engineering - Process Control - Statics & Strength of Materials - Electrical - Engineering Economics - Environmental - Math & Physics fundamentals

BUILT-IN REFERENCE TOOLS No need to switch apps mid-problem: - Unit Conversions: pressure, flow, temperature, energy, and more - Engineering Constants: universal, water, air, and physics constants, organized and searchable

WORKS OFFLINE. NO DATA COLLECTED. WhatEquation? runs entirely on your device. No internet connection required, no account, no tracking, nothing sent anywhere. It's a reference tool, not a data collector.

WHO IT'S FOR Built for working engineers, students studying for the FE or PE exam, and anyone who needs to go from "what's the right equation here?" to an answer in seconds, not twenty minutes of flipping through a handbook or searching the internet.

Download WhatEquation? and never lose time hunting for the right formula again.

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