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Shopping Percentage Calculators

Calculate discounts, taxes, tips, markups and more — instantly.

Discount Calculator Percentage Off Finder Markup Calculator Sales Tax Calculator Tip Calculator Price Increase % Price Decrease %

Discount Calculator

Calculate sale price and savings

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Formula: Sale Price = Original * (1 - Discount% / 100)
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Percentage Off Finder

Find the discount percentage applied

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Formula: Discount% = ((Original - Sale) / Original) * 100
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Markup Calculator

Calculate profit markup percentage

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Formula: Markup% = ((Selling - Cost) / Cost) * 100
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Sales Tax Calculator

Calculate tax amount and total price

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Formula: Total = Price * (1 + Tax% / 100)
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Tip Calculator

Calculate tip and total bill amount

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Formula: Tip = Bill * (Tip% / 100)
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Price Increase % Calculator

Calculate the percentage increase between two prices

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Formula: Increase% = ((New - Old) / Old) * 100
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Price Decrease % Calculator

Calculate the percentage decrease between two prices

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Formula: Decrease% = ((Old - New) / Old) * 100
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How to Calculate Discounts Like a Pro

Understanding how to calculate discounts quickly can save you significant money and stress during shopping trips. Whether it's a "20% off" sticker or a seasonal clearance event, the math remains the same. To find the savings, multiply the original price by the discount percentage. For instance, a $50 item with a 15% discount saves you $7.50 ($50 × 0.15). Subtracting this from the original price gives you the sale price of $42.50.

Many savvy shoppers prefer the direct method: subtract the discount from 100% and multiply. For a 20% discount, you're paying 80% of the price. $100 × 0.80 = $80. Our discount calculator does this instantly, ensuring you never have to guess at the register. Mastering these quick mental shortcuts, or using our tool, helps you stay within your budget while hunting for the best deals.

Understanding Sales Tax vs. VAT

Sales tax and Value Added Tax (VAT) are both consumption taxes, but they are applied differently. Sales tax is typically added at the final point of sale to the consumer, common in the United States. In contrast, VAT is collected at every stage of the production and distribution chain, often included in the sticker price you see on the shelf in Europe and other regions.

When calculating the total cost, it's crucial to know if the price is "net" (before tax) or "gross" (after tax). Our sales tax calculator helps you back out these numbers or add them onto a base price seamlessly. Whether you're calculating a 7% state tax or a 20% national VAT, understanding how these percentages impact your final bill is essential for accurate personal and business accounting.

Real-world use cases

Black Friday

Quickly compare "Percentage Off" deals to find the deepest actual savings on high-ticket items.

Dining Out

Calculate the perfect tip and split the bill among friends in seconds using our tip calculator.

Retail Business

Determine the correct markup percentage to ensure your products hit target profit margins.

Travel Budgeting

Account for local sales taxes or VAT refunds when shopping abroad to keep your budget on track.

Shopping Calculator FAQ

How do I calculate 20% off a price?
To calculate 20% off, multiply the original price by 0.20 to find the discount amount, then subtract that from the original price. Alternatively, multiply the original price by 0.80 to get the final sale price directly.

How do I find the original price before discount?
If you know the sale price and the discount percentage, divide the sale price by (1 - discount%/100). For example, if an item is $80 after a 20% discount: $80 / 0.80 = $100.

How do I calculate tip on a restaurant bill?
Multiply the total bill by the tip percentage decimal (e.g., 0.15 for 15% or 0.20 for 20%) to find the tip amount. Add this amount to the original bill to find your final total.

What is the difference between markup and margin?
Markup is the percentage added to the cost price to reach the selling price, whereas margin is the percentage of the selling price that is profit. While related, they use different denominators in their formulas.

How is sales tax calculated?
Sales tax is calculated by multiplying the net price of an item by the tax rate. For a $100 item with a 7% tax rate, the tax amount is $7, resulting in a total price of $107.

How do I calculate a price increase percentage?
Subtract the old price from the new price, divide the difference by the old price, and then multiply by 100. The formula is: ((New Price - Old Price) / Old Price) * 100.

How do I calculate a price decrease percentage?
Subtract the new price from the old price, divide that result by the old price, and multiply by 100. The formula is: ((Old Price - New Price) / Old Price) * 100.