Margin Math
Example: A Brooklyn pizzeria owner runs the Prime Cost Check and Break-Even Covers calculators on the first of each month, prints the one-page report, and drops it beside the P&L before handing it to the bookkeeper — every input staying in the browser.
client-side restaurant finance calculators
Four browser-side calculators — Delivery Break-Even, Prime Cost Check, Break-Even Covers, Price-Raise Simulator — plus a printable Monthly Margin Report, shareable URL-fragment scenario links, and an .ics monthly calendar reminder. Every input stays in your browser; no server endpoint receives your numbers.
Why it matters
Every term above in this section is something Margin Math computes. The tool is designed to be run monthly — print the report, drop it beside your P&L, compare to last month, then hand it to your bookkeeper. The privacy claim is inspectable: no fetch() on input, no storage, no cookies. Right-click View source on the tool page — the math module is unminified and under ~500 lines.
Frequently asked
What is Margin Math?
Margin Math is four browser-side calculators — Delivery Break-Even, Prime Cost Check, Break-Even Covers, Price-Raise Simulator — plus a printable Monthly Margin Report, shareable URL-fragment scenario links, and an .ics monthly calendar reminder. Every input stays in your browser; no server endpoint receives your numbers.
Why does Margin Math matter for a restaurant?
Every term above in this section is something Margin Math computes. The tool is designed to be run monthly — print the report, drop it beside your P&L, compare to last month, then hand it to your bookkeeper. The privacy claim is inspectable: no fetch() on input, no storage, no cookies. Right-click View source on the tool page — the math module is unminified and under ~500 lines.
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149 terms.
Plain-English definitions for every term in your audit, organized by category.