History of Text Case – Where Did uppercase and lowercase Come From?
Published 2026-04-08 · convertcase.in
The terms "uppercase" and "lowercase" have a literal origin in the physical world of printing. Here's the fascinating history behind the words we use every day.
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1The Printing Press Origins
In early moveable type printing, capital letters were stored in the upper case (a physical tray above the compositor's work surface). Small letters were in the lower case. Hence: uppercase and lowercase.
2Majuscule and Minuscule
Before the printing press terms, Latin scribes used "majuscule" (large letters) and "minuscule" (small letters) — terms still used in typography and paleography.
3Digital Typography
In digital text, case is encoded in Unicode. Each uppercase letter has a corresponding lowercase code point. toUpperCase() and toLowerCase() traverse these mappings.
Frequently Asked Questions
Why are capital letters called uppercase?
In letterpress printing, capital letters were physically stored in the upper compartment of a divided type case — literally the upper case.