---
title: "Free Contractor Calculators And Templates — JobOpsPro Tools"
url: https://jobopspro.com/tools
description: "Free calculators for HVAC, plumbing, and electrical contractors: labor rate, job profit, service call pricing, CFM, load calculations, pipe volume, and an estimate template."
lang: en
---

Free Tools

# Free Calculators And Templates For Contractors

Eight tools we use to answer the questions that come up every week in a trade shop: what should we bill an hour, did that job make money, how much air does this room need, how big is the service. No sign-up, no email wall — open one and start typing.

## Business

Estimate Template Build a clean, line-item estimate with markup and tax, then download it as a CSV or print it.: https://jobopspro.com/tools/estimate-template
Labor Rate Calculator Find the billable hourly rate that covers wages, burden, overhead, and the profit you want to keep.: https://jobopspro.com/tools/labor-rate-calculator
Job Profit Calculator Check gross margin, net profit, and effective hourly return on any single job before or after you run it.: https://jobopspro.com/tools/job-profit-calculator
Service Call Pricing Calculator Price a diagnostic or service call so it covers drive time, loaded labor, parts, and your target margin.: https://jobopspro.com/tools/service-call-pricing-calculator

## HVAC

HVAC CFM Calculator Calculate required airflow by room volume and air changes per hour, or by system tonnage.: https://jobopspro.com/tools/hvac-cfm-calculator
HVAC Load Calculator Get a fast square-foot BTU and tonnage estimate before you run a full Manual J.: https://jobopspro.com/tools/hvac-load-calculator

## Plumbing

Pipe Volume Calculator Find the water volume, weight, and fill or flush time for any run of pipe.: https://jobopspro.com/tools/pipe-volume-calculator

## Electrical

Electrical Load Calculator Estimate dwelling service load in VA and amps using the standard demand-factor method.: https://jobopspro.com/tools/electrical-load-calculator

## Structured data

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