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Concreting · Free Calculator

Concrete Slab Cost Calculator

Calculate the full cost of a concrete slab including materials, reinforcement, labour, and site preparation. Australian pricing for residential and commercial slabs.

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Pro Tips
  • Minimum 100mm thickness for residential slabs (AS 2870)
  • SL82 mesh is standard for residential — upgrade to SL102 for garages
  • Ensure proper compaction of sub-base before pouring
  • Allow for control joints every 3-4 metres to prevent cracking
  • Curing takes 7 days minimum — keep slab moist

"I built these calculators because I was sick of doing the maths on a notepad. Now every tradie can use them for free."

— Jarrod A., Founder & QBCC-Licensed Concreter

© 2026 TradieOS — Free trade calculators for Australian tradies.

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