About RestoCalculator

The purpose

What RestoCalculator Is For

The site exists to turn everyday restaurant questions into arithmetic you can see: the numbers you type, the formula applied and the result, with the assumptions written next to it instead of hidden behind the answer.

Food Cost

What does one plate or one recipe cost, and what share of its price is that?

Menu Price

What price reaches a margin you chose, and what does a price increase or a delivery platform change?

Restaurant Profit

Where does the money go, line by line, and what if sales or costs change?

Labor Cost

What does a schedule cost, including overtime and employer costs you enter?

Break-Even

How much must be sold to cover the costs you list?

Table Capacity

How many seats, turns and covers does a floor plan and a service window allow?

Tip

What tip, split or tip pool results from a bill, to the cent?

Our audience

Who the Calculators Are For

The calculators are written for people who run or plan a restaurant in the United States. Amounts are in U.S. dollars, and no accounting background is assumed: terms such as prime cost or contribution are defined where they are used.

Owners and Operators

Check a price, a schedule or a lease decision against your own numbers before you act on it.

Chefs and Kitchen Managers

Cost a plate or a recipe, including trim and cooking loss, and see its share of the price.

Front-of-House Managers

Plan seating, turns and reservations, and split tips and tip pools without losing a cent.

People Planning a Restaurant

Compare cost structures and see how many sales a plan needs. Treat the result as a question to test, not a forecast.

Rules such as overtime, tip credits, tip pools, taxes and occupancy limits differ by state, city and situation. The calculators do not apply or check them. They work out the arithmetic on the values you enter.

Two ways to use each tool

Simple Mode and Studios

Every calculator opens in its simple mode. Most also offer a Studio, an optional advanced mode you switch on above the calculator.

Simple Mode

A few fields and one result, for a quick check. It applies the formula printed on the same page and works without any other setting.

Studios

More inputs for a real decision: what-if changes, targets, side-by-side comparisons, tables, and a result you can copy or print with its assumptions.

Same Formulas

A Studio uses the same definitions as the simple mode of its page. It adds scenarios; it does not change what a term means.

Nothing Assumed

Studios do not fill fields with industry averages or benchmarks. A button labelled as an example loads illustrative numbers only when you press it.

What each Studio adds to its simple mode
Calculator	Advanced mode	What it adds
Food Cost	Recipe cost	Costs a recipe line by line, with yield and unit conversions inside weight, volume or count.
Menu Price	Pricing studio	Sets a price, tests a price increase, prices for delivery, compares dishes.
Restaurant Profit	Profit Studio	Profit and loss by line, what-if changes, a profit target, two situations side by side.
Labor Cost	Labor Studio	Cost by position, what-if, a labor target, schedule comparison, an overtime estimator.
Break-Even	Break-Even Studio	Cost lines of several kinds, what-if, two structures compared, sales channels.
Table Capacity	Table Capacity Studio	Capacity, rotation and utilization, reservations, two layouts compared, duration scenarios.
Tip	Tip Studio	Bill and tip to the cent, bill splitting, a tip pool, two scenarios compared.

How the math is defined

Formulas
and Rounding

Each page prints its formula and a worked example. When a term has more than one common meaning, such as food cost, gross profit or prime cost, the page says which one it uses.

In the simple modes, the numbers you type are read as exact decimals and combined with whole-number arithmetic, so there is no floating-point drift. A result is rounded once, at the end: money to the cent and percentages to the precision shown on the page, with exact halves rounded up. A value outside the range a field accepts is refused with a message, never silently changed.

Studios work at full precision and round only when a number is displayed, so a displayed total can differ by a cent from the sum of the rounded lines above it. The Tip Studio counts money in whole cents and shares leftover cents by a fixed rule, and the Break-Even Studio uses exact fractions.

Rounded once, at the end

Food Cost divided by Menu Price × 100 = Food Cost %

$4.50 ÷ $15.00 × 100 = 30% food cost. Change the menu price to $18.00 and the result becomes 25%: same formula, different inputs.

Verification

How Results Can Be Checked

There are two ways: you can check a result yourself, and the code behind the calculators is tested automatically.

Check It Yourself

Every page shows its formula and a worked example. Type the same numbers into a spreadsheet or a pocket calculator and compare the results.

Examples Are Recalculated

The figures in the worked examples on the pages are recomputed from the calculation code by automated tests, so a printed example cannot drift from what the tool returns.

Independent Reference

The simple modes are tested against a separate exact-arithmetic reference, including rounding edge cases and values at the limits of each field.

Assumptions Travel With the Result

When you copy or print a Studio result, the inputs, warnings and limits come with it, so the number is never separated from what it rests on.

Automated tests check the arithmetic against the formulas as defined on each page. They are not an audit, a certification or a professional review. This site does not claim that an accountant or any other professional has reviewed or approved a calculator.

Read results with care

What the Estimates Do Not Cover

Only What You Enter

A result counts the costs and sales you typed. A cost you leave out is not in the answer, and a wrong input gives a wrong output.

Not a Forecast

Scenarios are arithmetic on your own entries. No tool predicts how guests, staff or suppliers will react.

Rules Vary

Overtime, tipping, tax and occupancy rules depend on where and how you operate. The tools do not check them.

Not Cash Flow

Profit and break-even figures are not about when money moves. Loan principal, equipment and payment timing are outside them unless you enter them.

For clarity

Why Results Do Not Replace Advice

A calculator knows the numbers you give it. It does not know your lease, your contracts, your menu mix, your records, your tax position or the rules that apply to your location. That is why RestoCalculator is not accounting, tax or legal advice, and not a replacement for the point-of-sale, inventory or payroll software that holds your actual records.

Use a result to ask better questions and to compare options. For a decision that depends on your particular business, such as a tax filing, a payroll rule or a lease, rely on your own records and on a qualified professional.

Who answers for this content

Responsibility and Corrections

The content of RestoCalculator is published under the site’s own name. This site does not present named authors or professional credentials, and it makes no claim of accreditation.

Calculator pages and the guide carry an “About this page” note with a last-modified date. The date is shown only when it can be traced to a recorded edit of that page, and it changes when the page is edited.

If a result looks wrong or a statement is unclear, tell us which calculator you used, the values you entered, the result you received and the result you expected. That is enough to reproduce most problems.

Report an Error or Ask a Question

Where to start

The Guide and the Tools

One guide is published today. The seven calculators each carry their own explanations, formulas and worked examples.

How to Calculate Food Cost for a Restaurant

The food cost formula, how to cost a recipe with yield, and how food cost relates to menu pricing.

Read the Food Cost Guide

See what is available on the guides page

Legal & privacy

Privacy and Terms

For how this site handles data and the terms that apply to using it, see the pages below.

Good to know

Frequently Asked Questions

Are RestoCalculator results professional accounting advice?

No. The calculators work out arithmetic on the values you enter. They are not professional accounting, tax or legal advice, and they do not know your records, contracts or local rules.

Has a professional reviewed these calculators?

This site does not claim that an accountant or any other professional has reviewed or certified a calculator. Its checks are automated tests of the arithmetic, described on this page. They are not an audit.

Why does my result differ from my spreadsheet or accountant?

Usually because of a definition (for example what counts as food cost or labor cost), a different input, or rounding. Compare the formula printed on the calculator page with yours, and check how many decimals each side rounds to.

Are the example numbers real restaurant data?

No. Examples use illustrative figures chosen to show the method. They are not averages, benchmarks or results from any restaurant.

How do I report a mistake?

Use the contact page. Say which calculator you used, the values you entered, the result you got and the result you expected.