Cpu Affinity Mask Calculator

About This Tool

The CPU Affinity Mask Calculator is a comprehensive online tool designed for IT professionals and developers seeking to optimize CPU core utilization. It enables users to select specific cores and instantly generate the corresponding hexadecimal affinity mask, which can then be used to set process affinity settings on multi-core systems.
With support for up to 64 cores, the tool also allows reverse calculation: input a hex mask to see which cores are enabled. The interface is simple, intuitive, and provides real-time updates to help users make quick adjustments. Whether managing server workloads or optimizing performance-critical applications, this tool simplifies the complex task of affinity configuration.
Key features include core selection checkboxes, hex input for reverse calculation, automated conversions, and an easy reset option. Advanced users can export configurations or save profiles for future use. Designed with accessibility in mind, the interface supports high contrast and keyboard navigation. Its clean design ensures clarity whether accessed on desktop or mobile devices.

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