How do I calculate how much chemical anchor adhesive I need?

The volume of chemical anchor adhesive required is calculated using the annular area between the drill hole and the steel element, multiplied by the embedment depth. The formula is: Volume (ml) = (π/4 × drill hole diameter² − steel cross-section area) × embedment depth ÷ 1000. You then add a wastage allowance of 10–40% and divide the total by the cartridge volume to determine how many cartridges to order. Use the Allfasteners Chemical Anchor Volume Calculator on this page to do this automatically.

What drill hole size do I need for a chemical anchor?

The required drill hole diameter depends on the diameter of the threaded rod or rebar and the product used. For example, an M12 threaded stud requires a 14mm drill hole, and an M20 stud requires a 22mm drill hole. The Allfasteners Chemical Anchor Volume Calculator automatically selects the correct drill hole diameter when you choose your anchor size, based on AS 5216 specifications.

What is the difference between EF500R+ and VF22PRO+ chemical anchors?

EF500R+ is an extreme strength structural chemical anchor supplied in a 585ml cartridge, suitable for heavy-duty structural applications including flooded and diamond core drilled holes. VF22PRO+ is a fast cure high-strength anchor in a 410ml cartridge, ideal for projects requiring quicker installation and return to load. Both are NCC compliant and suitable for threaded rod and post-installed rebar applications.

How many chemical anchor cartridges do I need?

The number of cartridges depends on the anchor diameter, embedment depth, number of holes, and wastage allowance. Use the free Allfasteners Chemical Anchor Volume Calculator on this page — select your product, diameter, embedment depth, and number of anchors and it will instantly calculate the exact number of EF500R+ (585ml) or VF22PRO+ (410ml) cartridges required including wastage.

Can I use this calculator for post-installed rebar?

Yes. The Allfasteners Chemical Anchor Volume Calculator supports both threaded rod (M8–M36) and post-installed reinforcing bar (Ø8–Ø40) applications. Select the Reinforcing Bar tab, choose your rebar diameter and the calculator will automatically apply the correct drill hole diameter and calculate the adhesive volume required per hole and in total.

Chemical Anchor Volume Calculator | Allfasteners Australia

Chemical Anchor Volume Calculator — Threaded Rod & Rebar

Calculate exactly how much chemical anchor adhesive you need for your next job. This free tool helps engineers, builders and concreters across Australia estimate adhesive volume and cartridge quantities for threaded rod (stud) installations and post-installed rebar into concrete. Simply enter your anchor diameter, embedment depth and number of holes — the calculator does the rest, covering both EF500R+ and VF22PRO+ products.

Step 1 — Select anchor element type

Product Selection

EF500R+

Extreme Strength Structural

585ml

VF22PRO+

Fast Cure High Strength

410ml

Threaded Stud Details

Stud Diameter *

Drill Hole Diameter Ref. Note 1^* Auto-filled

Select a diameter above

Embedment Depth *

Number of Anchors Required *

Wastage Allowance Ref. Note 2^* *

Estimated Cartridges to Order

—

Complete all fields to calculate

Vol. per Hole

—

Vol. + Wastage

—

Total Volume Required (inc. Wastage)

—

Holes per Cartridge

—

Cartridge Size

—

Approved Drilling Method

—

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Volume Estimator Only This tool estimates cartridge quantities only. Always refer to the product technical data sheet and installation guide on allfasteners.com.au for the complete installation procedure, compliance parameters, and AS 5216 requirements.

Notes & References

Please refer to the technical documents published on our website for the complete correct installation procedure and parameters. Larger user-selected drill hole diameters are allowed for EF500R+ in this calculator; however these custom selected hole diameters are not compliant to AS 5216.
Wastage varies due to site and user factors. Suggested range for wastage is 10% to 40%.
Nominal embedment depths apply to the chemical stud anchor range.
Drill hole diameter only for VF22PRO+ Post-installed Rebar.

Chemical Anchor Volume Calculator

Chemical Anchor Volume Calculator — Threaded Rod & Rebar

Notes & References

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