Concrete calculator

Use the online product calculator below to work out the quantity required for your project / job. Please note if you have a small job then the calculator rounds up or down to the nearest bag.

Please use 'mm' for ALL values. (i.e., 1m = 1000mm)

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Total Volume = 0 m3
Litres Required = 0
Super Easy Mix in a bag (15kg) bags: 0
Easy to mix (20kg) bags: 0
Hi-Strength 36 (20kg) bags: 0
Easy to Mix (25kg) bags: 0
Easy to Mix (40kg) bags: 0
High-Strength 36 (30kg) bags: 0

Easy to Mix Concrete – 20kg Bag

  • The addition of 1.8 – 2 litres of water to a 20kg bag of EASY TO MIX will produce around 9.5 – 10 litres of concrete.

Easy to Mix Concrete – 40kg Bag

  • The addition of 4 litres of water to a 40kg bag of EASY TO MIX will produce around 18½ litres of concrete.

Hi-Strength 36 Concrete – 20kg Bag

  • The addition of 1.6 – 1.8 litres of water to a 20kg bag of HI-STRENGTH 36 will produce around 11.5 litres of concrete.

Quick to Set Concrete - 20kg Bag

  • As a guide, for posts up to 1.8m in length, use two 20kg bags
  • For larger posts use 2 – 3 bags
  • Where higher strengths are required, use Hi Strength Quick to Set concrete

Hi Strength Quick to Set Concrete

  • As a guide, for posts up to 1.8m in length, use two 20kg bags
  • For larger posts use 2 – 3 bags
  • To be used for any project requiring strengths of up to 36 MPa

Pave Set - 20kg Bags

  • Contents of one bag will cover approximately 6m² at a 3mm gap width
  • Can be used for joints from 3mm to 20mm

20 kg Mortar

  • With addition of water, a 20kg bag of mortar will typically produce 12.5 to 13 litres of fresh mortar

30 kg Industry Mortar

  • With addition of water, a 30kg bag of mortar will typically produce 18 to 19 litres of fresh mortar

20 kg & 40kg Cement

20 kg Supa Coat DIY Plaster Mix

  • With addition of water you will typically produce 12.5 to 13 litres of fresh plaster
  • Coverage is approximately 3m² per 20kg bag at a nominal 4mm thickness