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Margin Calculator
Free calculator that shows roofing contractors the exact minimum price they must charge per job to stay profitable, factoring in the waste and overhead that cost most roofers 3–5% of net profit. No signup. Built by a 12-year roofing-company owner.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | javascripting.com | roofingsoftwareguide.com |
| Pricing | — | |
| Company | — | Startup from the United States · 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of JavaScripting yet.
True Margin Calculator is a free web tool that shows roofing contractors the lowest price they can charge on a job and still make money. Most roofers do not go out of business because of slow months. They go out because they underbid good work. Miscalculated waste and overhead cost the average...
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As answered by people managing JavaScripting and True Margin Calculator.
True Margin Calculator's answer:
Most margin calculators are generic and assume your costs are already correct. This one is built for roofing contractors and includes the waste and overhead that roofers most often get wrong, usually 3% to 5% of net profit. It's free, no account needed, with no upsell. It exists to help you price jobs right, not to sell you anything.
True Margin Calculator's answer:
It's made for roofing, not generic job costing. Most calculators just apply a markup. This one looks at the two things that cost roofers the most profit, material waste and overhead, and tells you the lowest price you can charge on a job and still make money. It's free, there's no signup, and it comes from Roofing Software Guide, an independent review site run by people who have actually run a roofing crew.
True Margin Calculator's answer:
Roofing contractors of every size, from solo operators to multi-crew companies. It's most useful for owners who do their own estimating and want to be sure they aren't underpricing jobs or losing money on work they win.
True Margin Calculator's answer:
Roofing Software Guide was founded by Matt Richardson, who spent 12 years running a roofing company. He built the calculator after seeing too many good contractors go broke from bad math, underbidding jobs because they never fully accounted for waste and overhead. The tool takes that lesson and turns it into a few quick inputs that show the price you need to charge to stay profitable.
True Margin Calculator's answer:
It's a simple web-based tool. It runs in any modern browser with nothing to download or install. The math happens right on the page, so you can get your number in seconds from your phone on the jobsite or a computer in the office.
True Margin Calculator's answer:
It's a free tool, so it's used by independent roofing contractors all over the U.S. rather than a few big accounts. That ranges from one-truck operators to established multi-crew companies. The same contractors use Roofing Software Guide's independent reviews to pick their CRM, estimating, and measurement software.
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