Lytron Inc., Woburn, Mass., has released an improved version of its Units Converter and Equation Solver Tool, which was first released in 2006. Lytron designed the tool to help thermal engineers save time in solving complex thermal equations.

With the additions of mass, velocity and Q/ITD units, the tool now has 19 unit conversion options. On the equation-solver side, there are eight thermal equation options. Users can select their coolant, which will populate the equation with the fluid’s density and specific heat. Find the tool at, then click on “Tools & Technical Reference” at the top of the page.