Hey Product Hunt 👋 I built CBM3.net because in real shipping workflows, “CBM math is easy, but wrong assumptions are expensive.” I work with international trade/logistics and kept seeing the same issues: inconsistent units (cm/in, m/ft), quick quoting under time pressure, and teams discovering too late that the cargo doesn’t actually fit the way they imagined. So CBM3 started as a simple CBM calculator + unit conversions, then evolved into a 3D container loading simulation to make space planning more visual and less error-prone. The goal is not “perfect physics,” but a fast, practical way to validate: How many cartons/pallets fit? What’s the best orientation? Where do we waste space? It’s free to try, and I’m actively improving it based on real user feedback. I’d love your input on what to build next: What’s the biggest pain point in your quoting / packing / loading process? What features would make this a daily tool (PDF/CSV export, pallet templates, stacking rules, weight distribution, LCL tools, etc.)? Thanks for checking it out — feedback (even brutal) is welcome 🙏

CBM Calculator & 3D Container Loading

CBM Calculator

CBM Calculator