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Marcus Ackre Medina edited this page Jul 20, 2026 · 2 revisions

MarcusMedina.Units.Weight

Fluent weight unit conversion for .NET 10+ — metric, British (imperial, Troy and Apothecary), US customary, and historical Swedish units, all through one strongly-typed Weight struct.

dotnet add package MarcusMedina.Units.Weight

Why this exists

A raw double doesn't tell you whether it's grams, pounds, or skålpund — and mixing those up is an easy mistake to make in real code, or in a student's maths homework. I wanted a Weight struct where the unit is part of the type, so the compiler catches the mix-up instead of you catching it in production. Every conversion is broken into the same small, explicit step you'd walk a student through by hand, rather than buried inside one opaque formula.

Who this is for

  • New to C#? The API reads like plain English — 1.Stone().ToKilograms() — a good way to see extension methods and structs used for something concrete.
  • Professional? Zero dependencies, strongly-typed, fully tested. Drop it in wherever you need to convert weights without hand-rolling the maths again.

Pages

Quick Example

using MarcusMedina.Units.Weight.Metric;
using MarcusMedina.Units.Weight.British;
using MarcusMedina.Units.Weight.SwedishOld;

// Create a Weight from any supported unit
Weight package = 2.5.Kilograms();
Weight person  = 11.Stone();

// Convert to whatever unit you need
double pounds   = person.ToPounds();     // 154
double skalpund = package.ToSkålpund();  // ≈ 5.88

// Arithmetic works directly on Weight values
Weight total = package + 1.Pounds();

// Comparisons
bool heavier = person > package;

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