Anchor Load Calculator
Estimate the allowable load of an anchor based on base material and anchor type – for safe home fixings.
The allowable load of an anchor depends on the base material, diameter and embedment depth. This calculator gives a rough estimate of the maximum load per anchor.
Pro tips
- For safety-critical applications (e.g. heavy shelving) always use the manufacturer's specifications.
- Multiple anchors distribute the load and increase safety.
Frequently Asked Questions
How much load can an anchor hold in concrete?
It depends heavily on the anchor type, diameter and embedment depth – concrete generally allows much higher loads than drywall or aerated concrete. The calculator above gives you a rough estimate for your combination.
What does embedment depth mean for anchors?
Embedment depth is how far the anchor is actually seated in the load-bearing base material – the deeper it goes, the higher the load it can hold.
Is a standard anchor enough for heavy loads like wall cabinets?
For heavy, permanent loads (e.g. wall cabinets, TV mounts), certified heavy-duty anchors with approval ratings are recommended – the values here are rough estimates, not a structural calculation.
Which anchor works for hollow walls?
In drywall or aerated concrete you need special cavity or toggle anchors, since standard expansion anchors find little grip there.