Free Contractor Tools

Know your real numbers. No signup, no email required. Just answers.

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Cash Flow Gap Calculator

See how long your money is stuck between spending and getting paid. 82% of contractor bankruptcies happen despite a full pipeline โ€” cash flow is the real killer.

  • Visual payment timeline breakdown
  • Annual cost of your cash flow gap
  • Invoice delay impact analysis
  • Same-day invoicing comparison
  • Credit card interest cost calculator
Calculate Your Cash Gap โ†’
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Markup & Profit Calculator

Stop confusing markup with margin. Enter your job costs and see your true profit margin, effective hourly rate, and how you compare to industry benchmarks.

  • True margin vs. markup breakdown
  • Effective hourly rate calculation
  • Industry benchmark comparison
  • Scope creep impact analysis
Calculate Your Margin โ†’
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Estimating Accuracy Calculator

Enter your last 3-10 jobs and see how accurate your estimates really are. Most contractors are off by 22% โ€” where do you stand?

  • Job-by-job accuracy breakdown
  • Overall accuracy score
  • Annual profit impact estimate
  • Visual accuracy chart
Check Your Accuracy โ†’
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Change Order Cost Calculator

Find out what unbilled change orders are really costing you. Track the small extras that add up to thousands per year.

  • Monthly change order tracking
  • Annual revenue leak estimate
  • Per-job change order cost
  • Recovery potential calculator
Calculate Your Losses โ†’

Tools are nice. Automation is better.

ChargeHammer captures your hours, materials, and change orders automatically from voice notes and texts. No app to learn. No data entry.

See How ChargeHammer Works โ†’