Discount Calculator
Enter any 2 values — instantly see final price and you save (supports % off & fixed amount off).
Fill any two fields below and click Calculate. Works for both % off and fixed amount off.
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Quick %:
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Your Savings
Step-by-Step
Bulk Quantity & Tax
For 3 items, wholesale, or tax-inclusive price.
Tip: Enable tax to see payable total = final × qty + tax. Great for India GST (5/12/18%).
Common Discounts Cheat Sheet
$100 item — what you pay.
| Discount | You Save | You Pay | Example $50 |
|---|---|---|---|
| 10% | $10.00 | $90.00 | $45.00 |
| 15% | $15.00 | $85.00 | $42.50 |
| 20% | $20.00 | $80.00 | $40.00 |
| 25% | $25.00 | $75.00 | $37.50 |
| 30% | $30.00 | $70.00 | $35.00 |
| 40% | $40.00 | $60.00 | $30.00 |
| 50% | $50.00 | $50.00 | $25.00 |
割引・セール計算機 — 割引額とお得な支払総額の完全ガイド
割引計算機とは？
割引計算機は、商品の定価（元値）と割引率（％）、または値引き金額を入力するだけで、セール後の支払金額と節約できたお得額を瞬時に計算するショッピングツールです。バーゲンセール、タイムセール、クーポン適用時の計算に役立ちます。
割引計算の公式
割引額 = 元の価格 × (割引率 ÷ 100)
支払価格 = 元の価格 − 割引額 = 元の価格 × (1 − 割引率 ÷ 100)
計算例：定価15,000円のコートが30%OFFの場合：
- 割引額（値引き）：15,000円 × 0.30 = 4,500円お得
- 支払金額：15,000円 − 4,500円 = 10,500円
「半額」「さらに10%OFF」などの複数割引（重ねがけ）計算
元値10,000円の商品が「半額（50%OFF）」になり、レジで「さらに10%OFF」される場合、合計割引率は60%ではなく、5,000円の10%引きとなるため、最終支払価格は 4,500円（実質55%OFF）となります。
Frequently Asked Questions
Multiply original by discount %: $59.99 × 0.15 = $9.00 saved, Final = $59.99 − $9.00 = $50.99. Or 85% of $59.99.
Discount % = ((Original − Final) ÷ Original) × 100. Example: ($59.99 − $50.99) ÷ $59.99 ×100 = 15%.
Percent off is % of price (15% off $100 = $15). Fixed off is flat amount ($10 off $100 = $90). Use the toggle above to switch.
Apply sequentially: $100 −20% = $80, then $80 −15% = $68 (total 32% off, not 35%). Use calculator twice.
Most stores tax after discount. Enable Tax, enter GST/sales tax %, see total payable. Check local rules.
Original = Final ÷ (1 − %/100). Example: Final $80 after 20% off -> $80 ÷ 0.8 = $100.