Embed a calculator on your site

Every DatumSpot calculator can be dropped into your own site — a blog post, a client resource page, an intranet. It's free, needs no account, and nothing is uploaded. Copy a snippet below and paste it into an HTML block.

Please keep the attribution link. Each snippet includes a small “{tool} by DatumSpot” credit beneath the calculator — it's how the tool is credited and how people find their way back. The included script auto-sizes the iframe to its content.

Feet-Inch-Fraction Calculator

Parse, convert, and round construction dimensions between imperial and metric.

<iframe src="https://datumspot.com/embed/feet-inch-fraction/" title="Feet-Inch-Fraction Calculator by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/feet-inch-fraction/" target="_blank" rel="noopener">Feet-Inch-Fraction Calculator</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Architectural Scale Converter

Convert between US scales, metric ratios, and real dimensions.

<iframe src="https://datumspot.com/embed/architectural-scale/" title="Architectural Scale Converter by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/architectural-scale/" target="_blank" rel="noopener">Architectural Scale Converter</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

ADA Ramp Slope Calculator

Ramp length, landings, and 1:12 compliance — cited to 2010 ADA §405.

<iframe src="https://datumspot.com/embed/ada-ramp-slope/" title="ADA Ramp Slope Calculator by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/ada-ramp-slope/" target="_blank" rel="noopener">ADA Ramp Slope Calculator</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

ADA Clearances & Dimensions

Turning space, doors, toilets, counters, reach ranges & more — diagrams cited to the 2010 ADA Standards.

<iframe src="https://datumspot.com/embed/ada-clearances/" title="ADA Clearances & Dimensions by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/ada-clearances/" target="_blank" rel="noopener">ADA Clearances & Dimensions</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Stud Spacing Reference

Stud-count takeoff and on-center layout for a wall (16"/24" o.c.).

<iframe src="https://datumspot.com/embed/stud-spacing/" title="Stud Spacing Reference by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/stud-spacing/" target="_blank" rel="noopener">Stud Spacing Reference</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Stair Calculator

Risers, riser height, tread run, and pitch from a rise — cited to IRC R311.7.

<iframe src="https://datumspot.com/embed/stair-calculator/" title="Stair Calculator by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/stair-calculator/" target="_blank" rel="noopener">Stair Calculator</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Stair Stringer Calculator

Stringer length, plumb/level cut angles, and the framing-square rise & run — plus the cut-stringer throat check.

<iframe src="https://datumspot.com/embed/stair-stringer/" title="Stair Stringer Calculator by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/stair-stringer/" target="_blank" rel="noopener">Stair Stringer Calculator</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Roof Pitch Converter

Convert roof slope between rise-in-12 (6:12), degrees, and percent grade.

<iframe src="https://datumspot.com/embed/roof-pitch/" title="Roof Pitch Converter by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/roof-pitch/" target="_blank" rel="noopener">Roof Pitch Converter</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Rafter Length Calculator

Common-rafter run, rise, line length, plumb/seat cut angles, and per-foot factors from a span and pitch.

<iframe src="https://datumspot.com/embed/rafter/" title="Rafter Length Calculator by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/rafter/" target="_blank" rel="noopener">Rafter Length Calculator</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Roofing Calculator

Roof area, squares, and shingle bundles from a building footprint and roof pitch.

<iframe src="https://datumspot.com/embed/roofing/" title="Roofing Calculator by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/roofing/" target="_blank" rel="noopener">Roofing Calculator</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Drywall & Paint Takeoff

Estimate drywall sheets and paint gallons for a wall or ceiling area.

<iframe src="https://datumspot.com/embed/material-takeoff/" title="Drywall & Paint Takeoff by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/material-takeoff/" target="_blank" rel="noopener">Drywall & Paint Takeoff</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Square Footage Calculator

Area in sq ft, sq yd, m² and acres from length × width — with an optional material-cost estimate.

<iframe src="https://datumspot.com/embed/square-footage/" title="Square Footage Calculator by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/square-footage/" target="_blank" rel="noopener">Square Footage Calculator</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Tile & Flooring Calculator

Tiles and boxes to cover a floor or wall area, with a waste allowance.

<iframe src="https://datumspot.com/embed/tile/" title="Tile & Flooring Calculator by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/tile/" target="_blank" rel="noopener">Tile & Flooring Calculator</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Concrete Takeoff

Cubic yards, cubic metres, and bag counts for slabs, footings, walls, columns, and round piers — with a waste allowance.

<iframe src="https://datumspot.com/embed/concrete/" title="Concrete Takeoff by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/concrete/" target="_blank" rel="noopener">Concrete Takeoff</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Tributary Area & Load Takedown

Floor area a column carries and the load it takes down — interior, edge, or corner.

<iframe src="https://datumspot.com/embed/tributary-area/" title="Tributary Area & Load Takedown by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/tributary-area/" target="_blank" rel="noopener">Tributary Area & Load Takedown</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Beam Span Quick-Reference

Rough member depth from a span using typical span-to-depth ratios (rule of thumb).

<iframe src="https://datumspot.com/embed/beam-span/" title="Beam Span Quick-Reference by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/beam-span/" target="_blank" rel="noopener">Beam Span Quick-Reference</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>

Guardrail & Baluster Calculator

Even baluster spacing under the 4″ sphere rule, plus cited guard heights — IRC (residential) & IBC (commercial).

<iframe src="https://datumspot.com/embed/guardrail/" title="Guardrail & Baluster Calculator by DatumSpot" width="100%" height="560" loading="lazy" style="border:1px solid #e5e7eb;border-radius:12px;max-width:600px;width:100%"></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:8px 0;color:#475569">
  <a href="https://datumspot.com/calculate/guardrail/" target="_blank" rel="noopener">Guardrail & Baluster Calculator</a> by <a href="https://datumspot.com/" target="_blank" rel="noopener">DatumSpot</a>
</p>
<script>
(function(){if(window.__dsEmbed)return;window.__dsEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://datumspot.com")return;var d=e.data;if(!d||d.type!=="datumspot:embed:height")return;var f=document.querySelectorAll("iframe");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=d.height+"px";}}});})();
</script>