Engineering Calculation Tools & Standards

Explore 37+ verified online calculation tools for mechanical, HVAC, electrical, and structural engineers compliant with ISO, DIN, EN, ASME, and ASHRAE.

Pipe Sizing & Flow Velocity

Calculate pipe inner diameter, velocity, and pressure drop based on flow rate.

3-Phase Motor Power

Compute electrical motor power, current draw, efficiency, and power factor.

Tank Volume & Capacity

Calculate volume, liquid capacity, and filled levels for horizontal and vertical tanks.