Text Case Conversion in Go – strings Package Guide
Published 2026-03-04 · convertcase.in
Go's strings package provides functions for case conversion. Here's how to use them with practical examples.
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1Go Case Functions
strings.ToLower("HELLO") → "hello"
strings.ToUpper("hello") → "HELLO"
strings.Title("hello world") → "Hello World" (deprecated in Go 1.18+)2Recommended: golang.org/x/text
The golang.org/x/text/cases package provides locale-aware title casing:
cases.Title(language.English).String("hello world")Frequently Asked Questions
Is strings.Title deprecated in Go?
Yes — strings.Title was deprecated in Go 1.18. Use golang.org/x/text/cases instead.