Packaging calculators.
Free calculators for concrete bags, sandbags and FIBC bulk bag sizing — the sums our customers ask us most often.
Free tool
Concrete bag calculator
Free concrete bag calculator: work out how many 40, 50, 60, 80 or 90 lb (or 25 kg) bags of concrete you need for a slab, footing or fence post holes.
Free toolSandbag calculator
Sandbag calculator for flood walls: enter wall length and height to get the number of sandbags and tons of sand, using the standard pyramid-stacking method.
Free toolBulk bag size calculator
Bulk bag calculator: enter fill weight and bulk density to get the right FIBC (super sack) dimensions in cm and inches, product volume and safe working load.
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We’ll engineer the bag.
Share your product, fill weight and destination. A packaging engineer replies with a construction, price and lead time — usually within 8 hours.