Post Anchor vs Concrete Cost Comparison Calculator
Compare setting fence or deck posts in concrete with using metal post anchors, including bags of concrete, hardware, labour and post life.
Compare Your Options And Get Clear Answers
Compare setting fence or deck posts in concrete with using metal post anchors, including bags of concrete, hardware, labour and post life.
Post Anchor vs Concrete Cost Comparison Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Concrete Volume
π × radius² × depth gives the volume of each hole.
Cost per Post
Concrete plus labour, or anchor plus labour.
Cost per Year
Total ÷ expected life.
Use As A Guide
Results are estimates based on your inputs. Check real quotes, rates and professional advice before deciding.
Post Setting Guide
Typical 50 lb bags per hole.
| Hole Size | Volume (cu ft) | 50 lb Bags Needed | Use |
|---|---|---|---|
| 8 in × 24 in | 0.8 | 2 – 3 | Light fence |
| 10 in × 30 in | 1.6 | 4 | Standard fence |
| 12 in × 36 in | 2.8 | 7 | Gate post |
| 12 in × 42 in | 3.3 | 9 | Deck or pergola |
| Rule of Thumb | Depth = 1/3 post height | Slope concrete away | Use treated posts |
Post Anchor vs Calculator FAQ
Answers to common questions about this calculator.
Both work. Concrete gives rigidity; anchors keep wood dry and make replacement easier.
A 10 in by 30 in hole needs roughly 3 to 4 bags of 50 lb concrete.
About one third of the post length above ground, and below the frost line where applicable.
No. They are examples.