  In a recent paper we introduced the chirality-flow formalism, a method for
simple and transparent calculations of Feynman diagrams based on the left- and
right-chiral $\mathrm{sl}(2,\mathbb{C})$ nature of spacetime. While our
previous work focused on massless QED and QCD at tree-level, we here extend the
chirality-flow formalism to the full (tree-level) Standard Model, including
massive particles and electroweak interactions -- for which the $W$-interaction
simplifies elegantly due to its chiral nature. We illustrate how values of
Feynman diagrams can be immediately written down with some representative
examples.
