One Repetition Maximum (1RM) is the heaviest weight you can lift for a single repetition with proper form.

Which estimation model should I use?

It depends on your preference. `get_epley_estimate` is standard, while `get_brzycki_estimate` and `get_lander_estimate` offer alternative mathematical approaches.

Can I calculate training intensity?

Yes, use the `get_lift_intensity` tool to find out what percentage of your estimated 1RM you used during a set.

One Rep Max Calculator MCP Connector for Claude

A+

Estimate your maximum lifting capacity using Epley, Brzycki, and Lander models.

4 tools Official Updated Jun 28, 2026 Official Vinkius Partner

More Details Connect to Claude

This MCP server provides specialized tools for strength athletes to predict their One Repetition Maximum (1RM) without the physical strain of a true max test. Use get_epley_estimate for a widely recognized method, get_brzycki_estimate for an alternative approach based on intensity ratios, or get_lander_estimate for a more complex statistical model. You can also use get_lift_intensity to determine the training load percentage of your sets.

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Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_XKurfWTd774frZPUv4mWAuarI6C0tvKxTv5rEy9F/mcp

② Claude Code (terminal)

claude mcp add --transport http one-rep-max-calculator https://edge.vinkius.com/vk_preview_XKurfWTd774frZPUv4mWAuarI6C0tvKxTv5rEy9F/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "one-rep-max-calculator": {
      "url": "https://edge.vinkius.com/vk_preview_XKurfWTd774frZPUv4mWAuarI6C0tvKxTv5rEy9F/mcp"
    }
  }
}

Get full access on Vinkius

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