Markup Calculator — Methodology

Step-by-step calculation

Convert a cost price into a selling price at any markup, or work backwards from a price to find the implied markup.

1. 1

   Choose forward or reverse mode

   Toggle Cost → Price (forward) or Price → Markup (reverse) at the top of the calculator.

2. 2

   Enter your cost price

   Add what the product or service costs you to produce or buy.

3. 3

   Add markup % (forward) or selling price (reverse)

   In forward mode, enter the markup percentage. In reverse mode, enter your selling price.

4. 4

   Read the selling price and implied margin

   The calculator shows the selling price, the profit per unit, and the equivalent margin so you can sanity-check pricing.

Assumptions and overrides

Formula is region-agnostic and unchanged from standard pricing convention: Selling Price = Cost × (1 + Markup / 100). Currency symbol switches by region only.

Every region default on the calculator is editable. If your effective rate, fee, or threshold differs from the headline figure shown, type your own number into the field — the calculator recomputes instantly without leaving this page.

Review cadence and corrections

This methodology and the underlying rate defaults are reviewed at least annually, and immediately following any change to the headline rate from IRS, HMRC, or SARS. Every substantive update is recorded on the public changelog. Spotted an error? See the corrections policy for how to report it.

See the full editorial policy for the standards every page on BusCalcTools is held to.