mpusz/mp-units

Health v2 · maintenance only

Adoption not part of the score

1465 stars · 122 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

mp-units is a modern C++20/23/26 library providing compile-time-safe quantities and units of measurement, built on the ISO 80000 International System of Quantities. It offers dimensional analysis, quantity kind safety, and multiple systems of units, and is a candidate for C++29 standardization.

Use cases

• prevent unit conversion bugs like mixing meters and feet at compile time
• perform dimensional analysis in physics or engineering simulations
• represent SI and imperial quantities with type safety in C++
• model domain-specific quantities with quantity kind safety
• convert between units of measurement safely in C++ code
• implement scientific computing code with ISO 80000 compliant quantities

When to choose

• you are writing C++20 or later and need compile-time unit safety
• your project involves physical quantities, engineering, or scientific computing where unit errors are costly
• you want an ISO 80000-compliant, actively maintained units library with Conan/CMake support
• you want to align with the future C++29 standardization effort for quantities and units

When to avoid

• your project is limited to pre-C++20 compilers
• you need a runtime-only or dynamically typed units solution
• you work in a language other than C++
• you need a minimal header with no build system integration and cannot adopt Conan or CMake

Facets

library · maturity active

math type-system developer-tools programming-languages developer-tools simulation cpp cross-platform units-of-measure dimensional-analysis physical-quantities iso-80000 si-units cpp20 cpp23 compile-time-safety conan quantity-manipulation algorithms cmake

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