割引後の価格と節約額を計算。連続割引に対応。
税込みまたは税抜きの最終価格を計算
元の価格に割引率を適用
最初にパーセント割引を適用し、次にドルオフクーポンを適用して最大限節約。
割引後の価格に売上税を適用
Type the original, pre-discount price. This is the list price or the price before any sale discount is applied.
Type the discount as a percentage. Common retail discounts are 10%, 20%, 25%, 30%, or 50% off.
Get the sale price, the dollar amount saved, and the effective percentage off (which is slightly different for stacked discounts).
For related calculations, try our percentage calculator.
連続割引は足し算できません：
| 割引 | 誤った合計 | 正しい合計 | 最終価格 |
|---|---|---|---|
| 20% + 10% | 30% | 28% | 72ドル |
| 30% + 20% | 50% | 44% | 56ドル |
| 50% + 25% | 75% | 62.5% | 37.50ドル |
公式：最終価格 = 元値 × (1 - d₁) × (1 - d₂) × ...。30%+20%なら100×0.70×0.80=56ドル。
Cross-checked against authoritative formulas (IRS, NIST, ACSM) and updated for 2025/2026 tax years and rates.
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FAQ
Everything you need to know about this calculator. Can't find what you're looking for? Email our team.
A discount calculator is a free tool that finds the final price after a percentage discount and the dollar amount saved. Our discount calculator supports stacked discounts (e.g. 20% off then 10% off), sale prices, and tax addition. The discount calculator is useful for shopping sales, retail comparisons, and business pricing.
How it works
Our discount calculator lets you find the final price after a percentage discount, with optional stackable codes, in three steps.
Type the pre-discount price shown on the tag or product page. This is the base the percentage is applied to.
Type the discount percent (e.g. 25 for 25% off). Add a second percentage if you are stacking multiple codes or sale prices - the calculator applies them sequentially.
The result shows the sale price, the amount saved, and the total percent off the original. Stacked discounts show each layer separately for transparency.
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