For forwarders, brokers and trade publishers
Embed our freight calculators on your site
Every calculator runs free, with no sign-up, no cookies and no tracking scripts. Copy the iframe, paste it into your page, and your readers get the working tool. The only condition is that the attribution link back to Sellexio stays visible.
Demurrage & detention calculator
Free days, tiered per-diem rates, weekend and port-holiday rules, and a line-by-line charge breakdown per container.
<iframe
src="https://www.sellexio.co/embed/demurrage-calculator"
title="Demurrage & detention calculator"
width="100%"
height="1150"
style="border:1px solid #e5e7eb;border-radius:12px;max-width:1100px"
loading="lazy"></iframe>
<p style="font-size:12px">
<a href="https://www.sellexio.co/tools/demurrage-calculator">Demurrage & detention calculator</a> by
<a href="https://www.sellexio.co">Sellexio</a>
</p>Chargeable weight calculator
Air dim factors (6000 / 5000 / 4000), ocean LCL weight-or-measure, road groupage, and the cost of carrier rounding.
<iframe
src="https://www.sellexio.co/embed/chargeable-weight-calculator"
title="Chargeable weight calculator"
width="100%"
height="1250"
style="border:1px solid #e5e7eb;border-radius:12px;max-width:1100px"
loading="lazy"></iframe>
<p style="font-size:12px">
<a href="https://www.sellexio.co/tools/chargeable-weight-calculator">Chargeable weight calculator</a> by
<a href="https://www.sellexio.co">Sellexio</a>
</p>Freight class calculator
LTL density in pounds per cubic foot, the NMFC class band, and the cost of a carrier reclass including the inspection fee.
<iframe
src="https://www.sellexio.co/embed/freight-class-calculator"
title="Freight class calculator"
width="100%"
height="1400"
style="border:1px solid #e5e7eb;border-radius:12px;max-width:1100px"
loading="lazy"></iframe>
<p style="font-size:12px">
<a href="https://www.sellexio.co/tools/freight-class-calculator">Freight class calculator</a> by
<a href="https://www.sellexio.co">Sellexio</a>
</p>Last Free Day calculator
Dated last free day by carrier, port of discharge and equipment, per-day exposure after it expires, and a free email reminder opt-in.
<iframe
src="https://www.sellexio.co/embed/last-free-day"
title="Last Free Day calculator"
width="100%"
height="1300"
style="border:1px solid #e5e7eb;border-radius:12px;max-width:1100px"
loading="lazy"></iframe>
<p style="font-size:12px">
<a href="https://www.sellexio.co/tools/last-free-day">Last Free Day calculator</a> by
<a href="https://www.sellexio.co">Sellexio</a>
</p>Free-Time Matrix
Carrier demurrage and detention free days by port of discharge and container type, with day counting, clock start and last free day.
<iframe
src="https://www.sellexio.co/embed/free-time"
title="Free-Time Matrix"
width="100%"
height="1600"
style="border:1px solid #e5e7eb;border-radius:12px;max-width:1100px"
loading="lazy"></iframe>
<p style="font-size:12px">
<a href="https://www.sellexio.co/free-time">Free-Time Matrix</a> by
<a href="https://www.sellexio.co">Sellexio</a>
</p>Optional: auto-resize the iframe
The embed posts its height to the parent window whenever the result changes. Add this listener once per page if you would rather not fix the height yourself.
<script>
window.addEventListener("message", function (e) {
if (e.origin !== "https://www.sellexio.co") return;
if (!e.data || e.data.type !== "sellexio:embed-height") return;
document.querySelectorAll('iframe[src*="sellexio.co/embed"]').forEach(function (f) {
if (f.contentWindow === e.source) f.style.height = e.data.height + "px";
});
});
</script>Terms of use
- Free for commercial and non-commercial sites, including forwarder, broker and publisher pages.
- Keep the attribution link to sellexio.co visible and crawlable — no rel="nofollow" required, but the link must remain.
- Do not modify the calculation output or present the results as your own methodology.
- Figures are indicative planning numbers, not a tariff quote or a customs filing.
Want a co-branded version?
If you publish freight content or run a forwarding desk and want the calculator styled to your brand, or a tool built around your own tariff, get in touch through the partner programme.
Partner programme