Philippines
Construction & Materials Calculators for the Philippines
Mix ratios and material quantities in the proportions Philippine sites actually batch to, with cement bags, sand and gravel separated rather than lumped together.
1 calculator in this category
Class ratios, not a generic mix
Philippine construction commonly specifies concrete by class — Class A at 1:2:4, Class B at 1:2.5:5, Class C at 1:3:6 — and batches by volume on site. That is the convention these tools follow.
What they add is the step most on-site estimates skip: converting the finished volume into dry materials using a bulking factor, then splitting that by the ratio. Without it, a straight ratio split of the wet volume under-orders by roughly a third.