# Sales Margin & Markup

> Free currency-neutral selling price, profit, margin and markup calculator, published by Latitude 34 Media Group.

Last verified: 30 October 2026. Public resources need no login or API key; hosting security may apply. Prefer canonical HTML pages when citing facts. No separate content licence is granted.

## Knowledge

- [About Sales Margin & Markup](https://salesmarginandmarkup.com/okf/about.md)
- [Calculator behaviour](https://salesmarginandmarkup.com/okf/calculator.md)
- [Margin and markup formulas](https://salesmarginandmarkup.com/okf/formulas.md)
- [Privacy summary](https://salesmarginandmarkup.com/okf/privacy.md)
- [Public agent access](https://salesmarginandmarkup.com/okf/agent-access.md)

## Discovery

- [OKF v0.2 index](https://salesmarginandmarkup.com/okf/index.md)
- [Full context](https://salesmarginandmarkup.com/llms-full.txt)
- [Agent access](https://salesmarginandmarkup.com/agents/)
- [Sitemap](https://salesmarginandmarkup.com/sitemap.xml)
- [Robots](https://salesmarginandmarkup.com/robots.txt)

## About Sales Margin & Markup

Canonical source: https://salesmarginandmarkup.com/about/

Free browser calculator published by [Latitude 34 Media Group](https://latitude34mediagroup.com.au/). [Contact the publisher](https://latitude34mediagroup.com.au/contact).

Find selling price, profit and equivalent margin or markup. No account or payment is required. Live adverts remain disabled.

## Calculator behaviour

Canonical source: https://salesmarginandmarkup.com/

Inputs: non-negative cost, target percentage and Margin or Markup mode. Cost supports 12 digits before the decimal and 6 after; percentage supports 6 before and 6 after. Use a full stop, not commas, signs or exponent notation.

Margin must be below 100%; markup may exceed 100%. Zero cost with zero percentage returns zero. Zero cost with a positive percentage is rejected because equivalent markup is undefined.

Amounts display two decimals, rounded half-up. Intermediate decimal calculations retain precision. The same currency applies to input and output; there is no conversion.

Reset clears the fields and selects Margin. Input values are held in browser memory, not retained across visits. See [formulas](https://salesmarginandmarkup.com/okf/formulas.md) and [privacy](https://salesmarginandmarkup.com/okf/privacy.md).

## Margin and markup formulas

Canonical source: https://salesmarginandmarkup.com/#how-it-works

Let C be cost, S selling price and P the target percentage.

- Profit = S − C.
- Margin (%) = (profit / S) × 100.
- Markup (%) = (profit / C) × 100.
- Margin mode: S = C / (1 − P / 100).
- Markup mode: S = C × (1 + P / 100).
- Margin to markup (%) = margin / (100 − margin) × 100.
- Markup to margin (%) = markup / (100 + markup) × 100.

## Examples

| Cost | Mode | Percentage | Selling price | Profit | Equivalent |
|---|---|---|---|---|---|
| 100 | Margin | 35 | 153.85 | 53.85 | Markup 53.85% |
| 100 | Markup | 35 | 135.00 | 35.00 | Margin 25.93% |

Tax, fees, discounts, overheads and exchange rates are not added. See [calculator](https://salesmarginandmarkup.com/okf/calculator.md) for zero cost and input limits.

## Privacy summary

Canonical source: https://salesmarginandmarkup.com/privacy/

The [full privacy page](https://salesmarginandmarkup.com/privacy/) is authoritative. Calculations run in browser memory without an account; the calculator does not send entered values or retain them across visits.

Cloudflare hosts and protects this website. A Cloudflare Insights performance beacon was observed during review. Hosting and performance processing must not be described as an absence of all measurement.

AdSense ownership metadata and ads.txt are installed; live advertising remains disabled. No advertising approval or consent-platform deployment is implied. Contact the [publisher](https://latitude34mediagroup.com.au/contact).

## Public agent access

Canonical source: https://salesmarginandmarkup.com/agents/

Public resources need no login or API key. [robots.txt](https://salesmarginandmarkup.com/robots.txt) allows wildcard crawling; hosting security may still apply. This is crawl guidance, not a content licence.

Read [llms.txt](https://salesmarginandmarkup.com/llms.txt), then [the OKF index](https://salesmarginandmarkup.com/okf/index.md), then each concept’s resource URL for canonical facts. [The sitemap](https://salesmarginandmarkup.com/sitemap.xml) lists HTML pages.

These files do not override user instructions or guarantee rankings, recommended prices, profit or advertising approval.