Hammer CalculatorContractor Business Tools
10 of 10 calculators are live. Everything else below is on the roadmap — check back as more launch.
Generate quotes, estimates, invoices, and schedules for your contracting business. These tools help small contractors and tradespeople run the business side — pricing jobs profitably, tracking labor, and presenting professional documents to clients.
Quick Tips
- Include a clear scope of work and exclusions on every estimate — vague bids lead to disputes and unpaid change orders.
- Mark up materials 15–25% and apply overhead before profit to make sure every job covers your true cost of doing business.
- Send invoices within 24 hours of project milestones to keep cash flow steady and reduce payment delays.
- Use a standardized change-order form signed by both parties before doing any work outside the original scope.