Free tools for your business

Invoice generator

Create professional contractor invoices. Add labor, parts, taxes, and discounts, then save as PDF.
Invoice generator

Service price calculator

Calculate profitable service prices for any job. Enter costs, set your margin, and quote with confidence.
Service price calculator

Hourly rate calculator

Find out if your hourly rate covers your true costs — and what you should actually be charging.
Hourly rate calculator

Email signature generator

Build a professional email signature with your logo, contact details, and social icons. Copy it into Gmail, Outlook, or Apple Mail.
Email signature generator

HVAC upgrade ROI calculator

Show customers how fast a new system pays for itself. Get payback period, annual savings, and lifetime ROI.
HVAC upgrade ROI calculator

HVAC rebate finder

Find every rebate you can stack on a job — federal, state, utility, and manufacturer — and share a summary with your customer.
HVAC rebate finder

HVAC license requirements

Look up HVAC license requirements for any US state. Find license types, exams, experience, and fees.
HVAC license requirements

HVAC load calculator

Estimate the BTU capacity any property needs. Enter square footage, climate, and insulation to size the system.
HVAC load calculator

Air flow calculator

Determine proper ventilation for any room. Enter dimensions, pick the room type, and get the CFM you need.
Air flow calculator

Duct size calculator

Find the right duct dimensions for any run. Pick metal or flex, enter the CFM, and get a size to order.
Duct size calculator

Pipe expansion calculator

Calculate how much pipes expand or contract with temperature changes. Works for copper, steel, PVC, and more.
Pipe expansion calculator

Pipe volume calculator

Find out how much water a pipe holds based on material, size, and length. Supports copper, PVC, PEX, and steel.
Pipe volume calculator

Electrical load calculator

Calculate residential electrical load per NEC 220.83. Check if a home's panel can handle the demand.
Electrical load calculator

Voltage drop calculator

Check voltage drop for any wire size or find the minimum AWG per NEC. Single-phase and three-phase.
Voltage drop calculator