Pricing calculations are essential for both everyday shopping decisions and business profitability. The PercentNinja pricing calculator hub brings together a range of tools designed to help you work out discounts, sale prices, profit margins, markups, and pricing adjustments quickly and accurately.
These calculators are useful for retailers, ecommerce sellers, freelancers, and anyone managing costs and pricing. You can calculate the final price after a discount, determine the selling price needed to achieve a target margin, compare markup versus margin, and analyse how price changes affect profitability. All tools work with any currency or value and provide clear results you can use immediately.
Each calculator page includes worked examples, simple formulas, and frequently asked questions so you can understand how the numbers are calculated, not just the final result. Use the tools below to plan promotions, set competitive prices, and make more informed business or purchasing decisions.
This pricing hub groups the most useful calculators for shopping and business pricing — discounts, sale prices, markups, margins, and quick percentage adjustments.
If you’re pricing products, running promotions, or checking profitability, use the tools below to calculate the numbers accurately and consistently (with clear explanations).
Calculate the final price after a percentage discount.
ShoppingWork out sale prices from an original price and discount.
BusinessCalculate selling price from cost and markup %.
BusinessCalculate profit margin % from cost and selling price.
BusinessConvert between markup % and margin %.
CoreQuickly apply percentage increases/decreases to prices.
BusinessFind maximum cost price to hit your target margin.
BusinessEstimate how many units you need to sell to cover fixed costs.
CompareOld to new percentage increase/decrease for prices and costs.
CompareRepeated growth/decline over multiple periods.
If you’re running a promotion, use the Discount or Sale Price calculator to find the final price. If you’re setting a selling price from cost, use Markup (and then confirm profitability with Margin).
If you want to compare two prices or costs over time (rather than apply a percentage), use the Percentage Increase/Decrease calculator.
Markup is based on cost (profit ÷ cost). Margin is based on selling price (profit ÷ selling price). They are not interchangeable without conversion.
If you have an original price and a discount percentage, use the Discount Calculator or Sale Price Calculator to get the final price and savings.
Yes. They’re designed for practical pricing decisions: discounts, markups, margins, and final-price calculations.
Discounts reduce the base. If you drop from £100 to £80 (20% off), you need a 25% increase to return to £100 because the new base is £80.
Use these calculators for discounts, profitability, and pricing decisions. Many are useful for ecommerce and small business planning.