ResinCalc is a free, no-sign-up epoxy resin calculator for makers, woodworkers and crafters. Enter your piece's shape, measurements and depth and get the exact amount of resin you need, the A:B mixing ratio by weight, curing times, and an automatic layer-by-layer pour plan for deep pours. It works for river tables, jewelry, coasters, fluid art, molds, floors and countertops, in metric or imperial units. Built so you never waste a gram or run short mid-pour.