Complete Guide to Discount Calculation
What is a Discount Calculator?
A discount calculator calculates final discounted price and savings from original price and discount rate. Supports both forward (discount calculation) and reverse (original price calculation from discounted price) modes, with quick comparison across various discount rates.
How to Use
Forward: Step 1: Enter original price. Step 2: Enter discount rate (%). Step 3: Click Calculate to see discounted price and savings. Reverse: Step 1: Select 'Original Price Reverse' tab. Step 2: Enter discounted price and discount rate. Step 3: Original price is automatically calculated.
What is Reverse Calculation?
Reverse calculation finds the original price when you know the discounted price and discount rate. For example, if 20% off price is 80,000 KRW, original price is 80,000 ÷ (1 - 0.2) = 100,000 KRW.
Frequently Asked Questions (FAQ)
- Q. When is reverse calculation used?
- A. Useful when you see a discounted price and want to know the original price. Example: 'It's 30% off and costs 70,000 KRW, but what was the original price?'
- Q. How are stackable discounts calculated?
- A. Stackable discounts apply sequentially. Example: 100,000 KRW item with 20% off + additional 10% off = 100,000 × 0.8 = 80,000 → 80,000 × 0.9 = 72,000 KRW (final price). Not simple addition (20% + 10% = 30%).