What is the difference between site-mixed concrete and ready-mix concrete (RMC) cost?

Site-mixed concrete generally has a lower material cost per cubic metre but adds labour, quality-consistency risk and space requirements for mixing on site, while RMC costs more per unit but arrives with more consistent quality control and less on-site labour and storage burden. For smaller pours or tight urban plots, RMC delivery logistics can also be a constraint worth checking before committing to it. The calculator lets you compare both paths so you can weigh convenience against cost for your specific pour size.