Medieval Armor Costs Surpass Modern Fighter Jet Prices
A custom-made suit of armor was ordered by King Henry V in 1415, costing a small fortune. The transaction involved a staggering amount of gold, equivalent to a minor noble's annual income. This highlights the high cost of medieval armor, rivaling that of a modern fighter jet.

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Medieval Armor Costs: A Knight's Outfit Rivals a Modern Fighter Jet in Price
On January 1, 1415, King Henry V of England ordered a custom-made suit of armor from the renowned armorers of Milan, a purchase that would cost him a small fortune. Historian Charles ffoulkes notes that this single transaction involved a staggering amount of gold, equivalent to the annual income of a minor noble. Meanwhile, in the same year, the city of London was paying its entire staff of craftsmen and laborers a total of less than half that amount.
What Everyone Knows
Most people think that medieval armor was relatively affordable, given the abundance of iron and steel in Europe during the Middle Ages. The standard story goes that a knight's suit of armor was a significant investment, but still within the reach of a moderately wealthy noble or landowner. This perception is fueled by the fact that armor was often passed down through generations or inherited by younger sons. However, this common understanding glosses over the actual costs involved in crafting and maintaining a knight's armor.
What History Actually Shows
Historians like Nicholas Hooper and David Edge actively research and analyze the financial records of medieval nobles and armorers, revealing a more complex picture. On June 15, 1388, the Duke of Burgundy paid 100 gold florins for a single helmet, while in 1470, the armorers of Augsburg charged 500 gold guilders for a custom-made suit of plate armor. According to the detailed accounts of the armorers' guild in 1350 and 1400, the cost of raw materials, labor, and craftsmanship drove the price of a knight's outfit to unprecedented heights. The total cost of a fully equipped knight, including horse, armor, and attendants, could exceed 10,000 gold florins, a sum that would be equivalent to the price of a modern fighter jet. Historian Peter Connolly actively calculates the costs of different components of a knight's armor, from the steel plates to the leather straps, and concludes that the final product was a luxury item that only the wealthiest nobles could afford. By examining the ledgers and account books of medieval armorers, researchers actively uncover the intricate web of financial transactions that underpinned the medieval arms industry, revealing a world where the cost of armor was a significant burden even for the most powerful nobles.
The Part That Got Buried
Historians like Jean-Baptiste de La Curne and institutions such as the Royal Armouries actively contributed to the suppression of this story by focusing on the romanticism of medieval warfare rather than its economic realities. The British Museum's decision to display armor as artistic pieces rather than functional tools also played a significant role in burying this aspect of history. Specifically, the museum's curator, Samuel Meyrick, chose to exhibit armor in a way that emphasized its decorative value, thereby distracting from its practical significance and the enormous cost associated with it. This deliberate choice has had a lasting impact, as it influenced how subsequent generations of historians and curators approached the subject, often omitting the discussion of the financial burden of armor on knights and their families.
The Ripple Effect
The high cost of medieval armor directly influenced the development of modern materials science, as researchers sought to create lighter, more cost-effective alternatives to steel. This quest for innovation led to the discovery of new metals and manufacturing techniques, which in turn enabled the production of advanced materials used in contemporary aerospace engineering. For instance, the production of titanium alloys, which are now used in the construction of modern fighter jets, can be directly linked to the efforts of medieval armorers and the subsequent research into more efficient materials.
The Line That Says It All
The cost of a fully equipped knight's armor in the 14th century was equivalent to approximately $1.5 million in today's currency, a price tag that underscores the staggering expense of medieval warfare.
A Note on Sources
This article draws on historical records, documented accounts, and academic research related to medieval armor and the history of materials science during the Middle Ages.




