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  <!-- Homepage -->
  <url>
    <loc>https://flowratecalculator.com/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>weekly</changefreq>
    <priority>1.0</priority>
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  <!-- Main Calculator Tools -->
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    <loc>https://flowratecalculator.com/tools/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.9</priority>
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    <loc>https://flowratecalculator.com/tools/pressure-drop-calculator/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
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  <url>
    <loc>https://flowratecalculator.com/tools/pipe-sizing-calculator/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
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  <url>
    <loc>https://flowratecalculator.com/tools/velocity-calculator/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
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  <url>
    <loc>https://flowratecalculator.com/tools/reynolds-calculator/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
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  <url>
    <loc>https://flowratecalculator.com/tools/head-loss-calculator/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
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  <url>
    <loc>https://flowratecalculator.com/tools/pump-power-calculator/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
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  <url>
    <loc>https://flowratecalculator.com/tools/tank-calculator/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/tools/air-flow-calculator/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>

  <!-- New Calculator Tools -->
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    <loc>https://flowratecalculator.com/tools/orifice-plate-calculator/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/tools/weir-flow-calculator/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
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  <url>
    <loc>https://flowratecalculator.com/tools/mannings-equation-calculator/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>

  <!-- New SEO-Targeted Tools -->
  <url>
    <loc>https://flowratecalculator.com/tools/flow-rate-converter/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/tools/pressure-to-flow-calculator/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/tools/nozzle-flow-calculator/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
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  <url>
    <loc>https://flowratecalculator.com/tools/pipe-flow-chart/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>

  <!-- Phase 2 Advanced Tools -->
  <url>
    <loc>https://flowratecalculator.com/tools/valve-cv-calculator/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/tools/mass-flow-rate-calculator/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/tools/gas-flow-calculator/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/tools/pump-affinity-calculator/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/tools/heat-exchanger-calculator/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/tools/economic-pipe-calculator/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
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  <!-- Engineering Guides -->
  <url>
    <loc>https://flowratecalculator.com/guides/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/guides/how-to-calculate-flow-rate/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/guides/pressure-drop-in-pipes/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/guides/understanding-reynolds-number/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>

  <!-- New Engineering Guides -->
  <url>
    <loc>https://flowratecalculator.com/guides/pressure-to-flow-rate/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/guides/garden-hose-flow-rate/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/guides/pipe-flow-rate-charts/</loc>
    <lastmod>2026-04-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>

  <!-- Company & Info Pages -->
  <url>
    <loc>https://flowratecalculator.com/about/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/docs/</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/docs/pressure_drop.php</loc>
    <lastmod>2025-10-21</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>

  <!-- Legal Pages -->
  <url>
    <loc>https://flowratecalculator.com/legal/privacy-policy.php</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.3</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/legal/terms-of-service.php</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.3</priority>
  </url>
  <url>
    <loc>https://flowratecalculator.com/legal/cookie-policy.php</loc>
    <lastmod>2026-03-21</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.3</priority>
  </url>
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