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Free GSA per diem calculator widget for your website

Add our FY2026 GSA lodging and meals & incidental (M&IE) calculator with one HTML snippet. Built for travel managers, federal contractors, and finance publishers.

Copy your embed code

Paste this snippet into your website or CMS. The iframe always loads the latest GSA rates from PerDiemCalculator.com.

<!-- GSA Per Diem Calculator Widget -->
<iframe
  src="https://perdiemcalculator.com/embed/"
  width="100%"
  height="720"
  frameborder="0"
  style="border:0; border-radius:12px; max-width:680px; width:100%; box-shadow:0 4px 20px rgba(0,0,0,0.08);"
  title="GSA per diem calculator"></iframe>
<div style="font-size:12px; color:#666; margin-top:6px; font-family:system-ui, -apple-system, sans-serif;">Powered by <a href="https://perdiemcalculator.com/" target="_blank" rel="noopener" style="color:#f26522; text-decoration:none; font-weight:600;">Per Diem Calculator</a></div>

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Widget specifications

Responsive: scales from about 320px to 680px wide
Recommended height: 720px
Data: published GSA CONUS lodging caps and M&IE (FY2026), including the 75% first- and last-day rule
Maintenance: none. Rate updates sync on our side

Live preview

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How to install in 2 minutes

WordPress

Open your page or post editor. Click + Add Block and select Custom HTML. Paste the snippet and publish.

Wix

Click + Add Elements. Select Embed Code → Embed HTML. Paste the snippet and set width to 100%.

Squarespace

Edit the section, Add Block, choose Code. Set mode to HTML, paste the snippet, and save.

Custom HTML / Webflow

Paste the snippet into your HTML template, a Webflow Embed component, or a static-site markdown layout.

Who uses this calculator

Travel managers

Let employees estimate GSA lodging and M&IE before they file a voucher or book a trip.

Federal contractors

Put the same CONUS rates your contracts reference on an intranet or proposal site.

Publishers & blogs

Embed a working FY2026 calculator next to travel policy explainers instead of a static table.

Is the per diem calculator widget free to use?

Yes. The embeddable GSA calculator is free for travel managers, government contractors, employee intranet sites, blogs, and educational publishers.

How are GSA lodging and M&IE rates updated?

The widget loads published GSA CONUS rates from our database. When we sync a new fiscal year, embedded copies update automatically—you do not change the snippet.

Does the widget work on mobile devices?

Yes. The iframe scales from about 320px to 680px wide. Use height="720" as a starting point; visitors can scroll inside the frame for the day-by-day table.

How do I add the widget to WordPress, Wix, or Squarespace?

Copy the HTML snippet on this page and paste it into a Custom HTML block (WordPress), Embed HTML element (Wix), or Code block (Squarespace).