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ToolFusion

Industrial Calculations,
Engineered for Precision

Free online calculators for generators, motors, hydraulics, HVAC, and more. 69+ professional tools trusted by engineers worldwide.

Industrial Tools Illustration

69+ Calculators

10 categories covering generators, motors, hydraulics, HVAC, electrical systems, and more.

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Engineer-Built

Every formula validated against manufacturer data sheets from Cummins, Perkins, MTU, and industry standards.

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100% Free & Online

No sign-up, no download. Instant results on any device. Mobile-friendly responsive design.