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Version: 3.0.10 (latest)

Number and data formatting scenarios

Orientation​

Choose one operation instead of treating every formatted number as the same kind of string:

TaskFocused guide
Spell cardinal or ordinal numbersNumbers in words and ordinals
Parse a localized number phraseParse number words
Inflect a noun and combine it with a countInflection and quantities
Format or parse storage and ratesByte sizes and rates
Format or parse powers of 1000Metric numerals
Use Roman, compass, multiplier, tuple, or symbol helpersSpecialized formatting utilities

Example​

This verified survey sets English culture and exercises one representative call from several families:

Program.cs
using System.Globalization;
using Humanizer;

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

AssertEqual("forty-two", 42.ToWords(culture));
AssertEqual("twenty-first", 21.ToOrdinalWords(culture));
AssertEqual("21st", 21.Ordinalize(culture));
AssertEqual("XIV", 14.ToRoman());
AssertEqual("1.5 KB", 1536.Bytes().Humanize("0.0", culture));
AssertEqual("two people", "person".ToQuantity(2, ShowQuantityAs.Words));

Console.WriteLine("forty-two; twenty-first; XIV; 1.5 KB; two people");

static void AssertEqual<T>(T expected, T actual)
{
    if (!EqualityComparer<T>.Default.Equals(actual, expected))
        throw new InvalidOperationException($"Expected '{expected}', got '{actual}'.");
}

Focused guides separate the typed model, parsing contract, localization behavior, and failure modes. Pass CultureInfo directly where an overload permits it; scope both ambient cultures for APIs without a culture argument.

Pitfall​

Do not persist humanized number text as the numeric source of truth. ByteSize uses binary multiples, metric numerals use decimal powers, number-word parsing has locale-specific grammar, and Roman numerals have a strict range. Keep the typed value and choose a parser only for an input format the application explicitly accepts.

Version notes​

The survey’s available calls compile and run against the selected package. Number-word parsing begins in 3.0.1 and changes from int to long on main/preview. Culture-aware byte-rate formatting begins in 2.13.14. Historical snapshots remove or replace unavailable focused pages.