Panduan lengkap kalkulator
📋Ringkasan
The Discount Calculator instantly works out the final price after a discount and shows how much you save. Whether you're a shopper comparing deals or a store owner setting retail prices, knowing the real post-discount price helps you make smarter buying decisions.
Percentage off vs. fixed amount off
A percentage discount scales with price: 20% off a $50 item saves $10, but 20% off a $500 item saves $100. A fixed discount ($20 off) stays the same regardless of price.
This means a fixed discount is proportionally bigger on cheaper items, while a percentage discount rewards larger purchases. Knowing the difference helps you spot which deal is genuinely better.
Always compare the final price, not the size of the discount. A '50% off' sale can still be more expensive than a competitor's lower base price.
Stacked discounts don't simply add up
Two successive discounts of 20% and 10% do not equal 30% off. Each discount applies to the price after the previous one.
For example, $100 with 20% off becomes $80, then 10% off $80 becomes $72 — an effective discount of 28%, not 30%.
Retailers use this to make stacked offers sound bigger than they are. The calculator handles sequential discounts so you see the true final price.
🎯Cara menggunakan
- Enter the original price of the product
- Set the discount percentage (e.g. 20%)
- Choose the method: a single discount or multiple stacked discounts
- Click Calculate to see the final price and the amount saved
🔢Rumus yang digunakan
Final Price = Original Price × (1 − Discount% / 100)💡Contoh praktis
Example 1: A clothing sale
A shirt priced at $60 with a 30% discount: final price = $60 × (1 − 0.30) = $42, saving $18.
Example 2: An electronics deal
A $800 smartphone with 25% off becomes $600, a $200 saving.
Example 3: Stacked discounts
A $100 item with 20% then 10% off becomes $72 — an effective 28% discount, not 30%.
✅Tips penting
- •Compare final prices across stores rather than being swayed by the headline discount percentage.
- •Check whether tax is applied before or after the discount, as it changes the total you pay.
- •Watch for inflated 'original' prices — a big discount off a fake high price isn't a real saving.
⚠️Kesalahan umum yang harus dihindari
- ✗Adding stacked discounts together (20% + 10% = 30%) instead of applying them in sequence.
- ✗Assuming a bigger percentage always means a better deal, ignoring the actual base price.
- ✗Forgetting that sales tax may be added on top of the discounted price.
❓Pertanyaan yang sering diajukan
Q:Is there a difference between 20% off and $20 off?
A: Yes. A percentage discount changes with the price, while a fixed-amount discount stays constant. On a $50 item, 20% off ($10) is less than $20 off; on a $200 item, 20% off ($40) is more.
Q:How do I calculate the price after several successive discounts?
A: Apply each discount to the result of the previous one. For example, $100 − 20% = $80, then $80 − 10% = $72. They don't simply add together.
Q:How do I find the original price from a sale price?
A: Divide the sale price by (1 − discount). A $72 item that was 28% off had an original price of $72 ÷ 0.72 = $100.
Q:Is tax applied before or after the discount?
A: It depends on the store and jurisdiction, but tax is usually calculated on the discounted price. Always check your receipt to confirm.
Q:What's a typical discount range?
A: There's no legal cap, but in practice discounts commonly range from 5% to 70% depending on the product, season, and clearance status.
Q:How do I know if a discount is genuinely a good deal?
A: Compare the final price against other sellers and the item's usual price history. A large percentage off an inflated 'original' price may not be a real bargain.
✍️Ditulis dan ditinjau oleh tim Haseebat
Alat ini hanya untuk tujuan edukasi dan perkiraan; bukan nasihat keuangan atau hukum. Verifikasi dengan otoritas resmi terkait sebelum mengambil keputusan apa pun.