How It Works
Three simple steps to get accurate calculations
1
Enter Job Size & Price
Input square footage and your quoted price per square foot.
2
Add Material Costs
Include concrete, rebar, forming materials, and delivery fees.
3
Factor In Labor & Equipment
Set crew size, rates, and equipment rental costs.
4
Account for Delays
Add expected weather delays and their daily cost impact.
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Frequently Asked Questions
What should I charge per square foot for concrete?
Standard flatwork: $8-15/sqft basic, $12-18/sqft with color/stamp. Driveways: $10-18/sqft. Decorative: $15-25/sqft. Factor in thickness, access difficulty, and local market. Always calculate your true costs first.
How do I calculate concrete yards needed?
Formula: (Length × Width × Thickness in inches) ÷ 324 = cubic yards. For 4" thick: sqft ÷ 81 = yards. Add 5-10% for waste and grade variations. Example: 800 sqft at 4" = ~10 yards + 1 yard buffer.
What profit margin should concrete contractors target?
Target 25-40% gross margin on flatwork. After overhead, net margins of 10-20% are typical. High-end decorative work can achieve 40-50% gross margin. Below 20% gross margin, you're likely losing money after overhead.
How do I price weather delays in concrete bids?
Build 1-2 delay days into multi-day projects. Cost per delay day = crew standby ($200-400) + rescheduling cost + potential material waste. For fixed-price work, include weather contingency in bid. For T&M, clarify delay billing terms.
How big of a crew for concrete flatwork?
400 sqft or less: 2-3 person crew. 400-1000 sqft: 3-4 person crew. 1000+ sqft: 4-6 person crew. Larger pours need more finishers as concrete sets quickly. Factor in setup/teardown when calculating labor hours.
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Results are estimates for informational purposes only. Consult professionals for important decisions.