Kilogirl Power

Photo by Kiana Bosman on Unsplash‍ ‍

In the early days of computing, long before machines hummed in server rooms or lived in our pockets, a “computer” wasn’t a device; it was a person and more often than not, that person was a woman. Women filled rooms at observatories, government agencies, and research labs, performing the painstaking calculations that powered astronomy, ballistics, engineering, and early data science.

This is something I already knew about because of great movies like Hidden Figures, but something that I didn't hear about until recently was the term used to describe their output. As electronic computers emerged in the 1940s, someone coined the term "kilogirl" which was a tongue‑in‑cheek unit of measurement for the computing power of one thousand women working for one hour. It was meant as a joke, but like many jokes, it revealed a truth people weren’t ready to say out loud: women were the computational engine of the modern world, and their labor was the baseline against which new machines were measured. 

The term resurfaced in recent years as historians and technologists revisited the overlooked infrastructure of early computing. Projects like Superkilogirls have traced how women’s labor - manual, intellectual, and emotional - underpinned the evolution from weaving machines to mainframes to microchips. A kilogirl wasn’t just a unit; it was a reminder of the invisible scaffolding that made technological progress possible. 

As we continue through Women’s History Month, I keep thinking about how often women's labor, intellect, and steadiness have served as the uncredited baseline upon which entire systems, industries, and eras have been built. For generations, women have been the invisible architecture, the force that keeps the machinery of daily life humming even when the world forgets to look in their direction. Their work has been the pulse beneath innovation, the continuity beneath disruption, the through‑line that endures long after the headlines fade. When you begin to trace that lineage - when you follow the thread of women’s impact across time - you start to see not just constancy, but magnitude: a collective power that compounds, accumulates, and ultimately reshapes the very structures it once quietly sustained.

The more clearly we see that lineage, the more urgently we’re called to honor it with what we build next.