Genderize
Classify gender from names.
Genderize is a statistical name-to-gender classification service that returns the probability a name belongs to a male or female, based on a dataset of around 1 billion people. It is designed to enrich existing datasets with demographic signals, supporting use cases such as customer analytics, audience segmentation, academic research, and CRM data enrichment. The service is part of a suite that also estimates age (agify.io) and nationality (nationalize.io) from names.
Genderize is available through a high-volume API, a spreadsheet upload tool, a Google Sheets add-on, and no-code integrations with platforms including Airtable, Shopify, Salesforce, Zapier, Make, n8n, and Pipedream. It also exposes an MCP server for use with AI assistants such as Claude, Cursor, and ChatGPT. The API supports full names, diacritics and non-Latin alphabets, and country-scoped requests. Official client libraries are available for eight languages, including Python, Node, Go, PHP, Ruby, Rust, Elixir, and C#.
Genderize is suited to developers, researchers, and organizations working with large name datasets. A free plan provides 2,500 names per month without a credit card, with access to all three APIs. Paid plans are usage-based, with monthly name limits and an Enterprise option for higher volumes. Plans include the spreadsheet bulk upload tool, no-code integrations, country-scoped requests, official SDKs, and email support.
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