Design and simulate fixed-point systems

Fixed-Point Designer™ provides data types and tools for developing fixed-point algorithms in MATLAB® code, Simulink® models, and Stateflow® charts. It automatically proposes fixed-point data types and attributes such as word length. You can also specify attributes such as rounding mode and overflow action manually. You can perform accelerated bit-true simulations to observe the impact of limited range and precision.

Fixed-Point Designer lets you convert floating-point algorithms to fixed point. You can create and optimize fixed-point data types that meet your numerical accuracy requirements and target hardware constraints. You can simulate your design and analyze the results to obtain range information. Fixed-Point Designer uses this information to recommend word lengths and scalings for your fixed-point algorithm and enable you to compare fixed-point results with floating-point baselines.

Fixed-Point Designer supports C, HDL, and PLC code generation.


Fixed-Point Specification

Specify all the fixed-point properties of your MATLAB code, Simulink models, and Stateflow charts.

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Bit-True Design Workflow

Configure your design with fixed-point data types.

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Floating-Point to Fixed-Point Conversion

Convert a design from floating-point to fixed-point representation.

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Accelerated Simulation

Accelerate fixed-point algorithms through MEX-file generation.

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Code Generation

Generate pure integer C code from your fixed-point MATLAB code.

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Product Resources

Discover more about Fixed-Point Designer by exploring these resources.


Explore documentation for Fixed-Point Designer functions and features, including release notes and examples.


Browse the list of available Fixed-Point Designer functions.

System Requirements

View system requirements for the latest release of Fixed-Point Designer.

Technical Articles

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User Stories

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Community and Support

Find answers to questions and explore troubleshooting resources.


Fixed-Point Designer apps enable you to quickly access common tasks through an interactive interface.

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There are many ways to start using Fixed-Point Designer. Download a free trial, or explore pricing and licensing options.

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Have Questions?


Contact Ram Cherukuri,
Fixed-Point Designer Technical Expert

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Fixed-Point Designer requires: MATLAB

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News and Events

Introducing the Fixed-Point Converter App for MATLAB