Discount Calculator
Calculate sale prices, discount percentages, and original prices instantly. See your savings with a visual breakdown.
Your Savings
You Save
$25.00
25%
Discount
Your Savings
Sale Price
Original Price
$100.00
Discount
25%
You Save
$25.00
Sale Price
$75.00
Understanding Discount Calculations
Calculate Sale Price
Sale = Original x (1 - Discount/100)
Multiply the original price by (1 minus the discount percentage) to get the sale price. Example: $100 x 0.75 = $75 for 25% off.
Calculate Discount Percentage
Discount% = (Original - Sale) / Original x 100
Subtract sale price from original, divide by original, then multiply by 100. Example: ($100-$75)/$100 x 100 = 25%.
Calculate Original Price
Original = Sale / (1 - Discount/100)
Divide the sale price by (1 minus the discount percentage). Example: $75 / 0.75 = $100 if 25% was taken off.
Frequently Asked Questions
To calculate the sale price, multiply the original price by the discount percentage divided by 100, then subtract that amount from the original price. Formula: Sale Price = Original Price - (Original Price x Discount % / 100). For example, a $100 item with 25% off: $100 - ($100 x 0.25) = $75.
To find the discount percentage, subtract the sale price from the original price, divide by the original price, and multiply by 100. Formula: Discount % = ((Original Price - Sale Price) / Original Price) x 100. For example, if an item was $80 and is now $60: (($80 - $60) / $80) x 100 = 25% off.
To find the original price, divide the sale price by (1 minus the discount percentage as a decimal). Formula: Original Price = Sale Price / (1 - Discount % / 100). For example, if an item is $75 after 25% off: $75 / (1 - 0.25) = $75 / 0.75 = $100.
First calculate the discounted price, then multiply by (1 + tax rate / 100). Formula: Final Price = Sale Price x (1 + Tax Rate / 100). For example, a $75 sale price with 8% tax: $75 x 1.08 = $81. The tax is always applied after the discount, never before.