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Version: 3.0.10 (latest)

Transform strings, identifiers, and casing

Orientation​

Use Humanize to turn program-shaped identifiers into display text. Use the identifier transformations when code, file, or route naming is the destination. Apply LetterCasing or a cultured transformer only after deciding the word boundaries; casing and identifier conversion solve different problems.

Example​

This verified source covers readable labels, explicit casing, Pascal/snake/kebab conversion, dehumanization, truncation, and a cultured transformer:

Program.cs
using System.Globalization;
using Humanizer;

CultureInfo.CurrentCulture = CultureInfo.GetCultureInfo("en-US");
CultureInfo.CurrentUICulture = CultureInfo.GetCultureInfo("en-US");

AssertEqual("Customer order history", "CustomerOrderHistory".Humanize());
AssertEqual("Customer Order History", "CustomerOrderHistory".Humanize(LetterCasing.Title));
AssertEqual("CustomerOrderHistory", "customer order history".Dehumanize());
AssertEqual("customer_order_history", "CustomerOrderHistory".Underscore());
AssertEqual("customer-order-history", "CustomerOrderHistory".Kebaberize());
AssertEqual("CustomerOrderHistory", "customer_order_history".Pascalize());
AssertEqual("Customer…", "Customer order history".Truncate(9));
AssertEqual(
    "Text with more words…",
    "Text with more words than the limit".Truncate(4, Truncator.FixedNumberOfWords));
AssertEqual("Order History", "order history".Transform(To.TitleCase));

Console.WriteLine("Customer order history");

static void AssertEqual(string expected, string? actual)
{
    if (actual != expected)
        throw new InvalidOperationException($"Expected '{expected}', got '{actual}'.");
}

Turn an identifier into a label​

Humanize recognizes PascalCase, camelCase, underscores, dashes, numbers, and common acronym boundaries. Pass LetterCasing.Sentence, Title, LowerCase, or AllCaps when the label needs a known presentation case. All-capital input is treated as an acronym and can remain unchanged until a casing operation is requested.

Convert between identifier conventions​

DestinationAPI
PascalCasePascalize
camelCaseCamelize
snake_caseUnderscore
kebab-caseKebaberize
Replace underscores with hyphensDasherize or Hyphenate
Title-like identifier wordsTitleize

Dehumanize is the direct readable-text-to-PascalCase operation. Use the named inflector transformations when the destination convention matters.

Compose casing transformations​

Transform(To.TitleCase) and its sentence, upper, and lower siblings use cultured string transformers. Pass a CultureInfo to the cultured overload. Implement IStringTransformer or ICulturedStringTransformer for a local reusable rule without changing process-global configuration.

Pitfall​

Identifier conversions are intentionally lossy. Acronym boundaries, punctuation, whitespace, and Unicode can prevent a round trip. Dasherize and Hyphenate primarily replace underscores; use Kebaberize when the input needs complete word-boundary normalization.

Title and sentence casing use culture-sensitive text operations. Scope culture when output must be deterministic, especially for Turkish and Azerbaijani casing, and do not assume title casing implements a particular editorial style guide.

Version notes​

The verified executable compiles and runs against the selected package. Core transformations also exist in 2.x, but Humanizer 3 changes several delimiter and no-letter edge cases. Use the selected snapshot when exact legacy behavior matters.