Discount Calculator
This discount calculator helps you determine the final price of an item or service after applying a discount. It can also work in reverse to find the original price or discount percentage for products.
Discount Formula
Discount = List Price - Selling Price
Discount (%) = Discount / List Price × 100
Where:
- D = Discount Percentage
- L = List Price
- S = Sale Price
How to Calculate a Discount
Percentage OFF
- Sum all item prices to get the total price
- Convert the discount percentage into a decimal
- Multiply the decimal by the total price to find the discount amount
- Subtract the discount amount from the total price to get the final price
Example:
You purchase three items priced at $35, $50, and $70, with a 20% discount. Find the price after discount.
Solution:
Total Price = 35 + 50 + 70 = $155
Decimal Discount = 20 ÷ 100 = 0.2
Discount Amount = 155 × 0.2 = $31
Price After Discount = 155 - 31 = $124
Fixed Amount OFF
- Formula: Discounted Price = Original Price - Fixed Amount
- Example: $50 item with $10 off → 50 - 10 = $40
Percentage Off on Additional Products
- Determine the percentage discount
- Divide the discount among additional products
- Convert percentage to decimal and multiply by each product’s price
2-for-1, 3-for-2, 4-for-3 Offers
- List products in descending order by price
- Pay for the more expensive items
- The cheapest item is free, representing your savings
Multiple or Sequential Discounts
- Apply discounts in sequence (e.g., calculate the smaller discount first, then the larger one)
- Add all discount amounts and subtract from the original price
Multiple Units
- Multiply unit price by the total quantity to get the original price
- Subtract any fixed discounts applied to multiple units
Using an online discount calculator simplifies these calculations and reduces errors while including sales tax if needed.
FAQs
What Are the Types of Discounts?
- Trade Discount: Offered to businesses based on purchase size, location, or customer type
- Quantity Discount: Given for bulk purchases to encourage large-volume sales
- Cash Discount: A fixed discount offered within a specific time frame
- Seasonal Discount: Applied during a specific season or promotion period
- Buy 1, Get 1 Free (2-for-1, 3-for-2): Promotional offer where one item is free after purchasing 1, 2, or 3 items
How to Calculate Percentage Discount?
- Subtract the discounted price from the original price to get the discount amount
- Divide the discount amount by the original price
- Multiply by 100 to get the discount percentage
What Is a Flat Discount?
A flat discount is a fixed amount subtracted from the product price, regardless of quantity. Use an online calculator for quick computation.
How to Add a Percentage to a Price?
- Convert the percentage to a decimal (e.g., 20% → 0.2)
- Multiply by the price to calculate the added amount
- Add this to the original price to get the final price
References:
From Wikipedia: Discounts and Allowances