Keystone Pricing Calculator
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Results are estimates for informational purposes only and may be rounded.
Tip: Press Enter to calculate.
Keystone pricing sets retail price at roughly double the cost price. Use this calculator to get the keystone price and gross margin.
Use this calculator when you need a fast, reliable answer without opening a spreadsheet. Enter your figures below and press Calculate. PercentNinja shows the key outputs you typically need for pricing decisions, VAT checks, ecommerce payouts or ad reporting.
When to use this
- Checking a price before you publish it on your website or marketplace
- Planning profitability (margin, fees or VAT) before running ads
- Quick sanity-checks for invoices, quotes or campaign reports
Worked examples
Example 1
Question: Cost £15.
- Price = 15×2 = £30
- Margin = (30−15)÷30×100 = 50%
Example 2
Question: Cost £4.99.
- Price = £9.98
- Margin = 50%