Embed Our Calculators

Every calculator on reuven.tools has an embeddable version at /embed/<tool> — the full calculator with no navigation, ads, or footer. Embedding is free for any site. The only requirement: keep the “Powered by reuven.tools” attribution link visible, and don't present the results as your own calculation engine.

1. Paste the iframe

Copy the snippet from the “Embed this calculator” button on any tool page, or adapt this example:

<iframe src="https://reuven.tools/embed/board-foot" width="100%" height="600" style="border:0" title="Board Foot Calculator (Lumber BF & Cost)" loading="lazy"></iframe>

2. Optional: auto-resize

Each embed broadcasts its height with postMessage as { type: "reuven-embed-resize", slug, height }. Add this once to the host page and the iframe tracks its content height:

<script>
window.addEventListener('message', function (event) {
  var data = event.data;
  if (!data || data.type !== 'reuven-embed-resize') return;
  var frame = document.querySelector('iframe[src*="/embed/' + data.slug + '"]');
  if (frame) frame.style.height = data.height + 'px';
});
</script>

Live example