Free tools

Calculators, templates, and generators for field service businesses. Enter your numbers on any tool, then start a free OpsBack trial to view results, print, or download.

HVAC CFM
Estimate airflow (CFM) from cooling tons or room volume and target ACH.
Duct sizing
Rough round or rectangular duct size from CFM and target air velocity.
ACH
Air changes per hour from room volume and airflow, or CFM from ACH.
Receipt
Create a professional receipt with your logo, line items, tax, and totals.
Proposal
Fill in a structured service proposal and export when you are signed in.
Labor cost
Loaded labor cost and suggested bill rate from wage, burden, and efficiency.
Work order
Standard work order fields—export the filled form when signed in.
Roof inspection
Interactive checklist for common roof inspection items.
House cleaning
Estimate cleaning time and price from home size and service depth.
Roof replacement
Ballpark material and labor range from area, pitch, and material tier.