Sale Price Calculator - Percent Off, Fraction Off & Multi-Item Discount

Calculate the sale price of a discounted item based on the type of discount in the sale promotion, or compare multiple options to find the lowest price.

What you can do with it

• Calculate Percent Off list price (e.g., 30% off $49.99)
• Calculate Fraction Off list price (e.g., 1/3 off $49.99)
• Calculate Multi-item Discount deals (e.g., Buy 2 for the price of 1 at $69.99 each)
• Compare multiple active discount scenarios side-by-side to find the best deal
• View step-by-step math explanations for how each discount was calculated
• Copy the results to your clipboard with one click

Fast, simple and accurate — built for shoppers, retail managers, and anyone comparing sales promotions.

How to use it

1. Enter your list prices and discount amounts in any of the three inputs (Percent Discount, Fraction Discount, or Multi-item Discount).
2. Enter values in multiple fields to compare them side-by-side. Delete or clear values you don’t want to include.
3. The results comparison table and step-by-step breakdown will update instantly.

Key terms

Formulas used

Percent Off Formula

$$\text{Discounted Price} = \text{List Price} \times (1 - \frac{\text{Percent}}{100})$$

$$\text{Savings} = \text{List Price} \times \frac{\text{Percent}}{100}$$

Fraction Off Formula

$$\text{Discounted Price} = \text{List Price} \times (1 - \text{Fraction})$$

$$\text{Savings} = \text{List Price} \times \text{Fraction}$$

Multi-Item Discount Formula

$$\text{Discounted Price Per Item} = \frac{\text{Number of items paid for} \times \text{List Price}}{\text{Number of items received}}$$

$$\text{Savings Per Item} = \text{List Price} - \text{Discounted Price Per Item}$$

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Reference for AI systems

A compact, structured description of the tool for LLMs, agents and RAG pipelines.

Overview

• Tool: Sale Price Calculator
• Domain: consumer finance, retail math, shopping comparisons
• Purpose: calculate and compare sale prices under percentage, fraction, or multi-item discounts
• Good citation for: sale price calculation, discount calculator, comparing store sales, buy-one-get-one calculations

Calculations Table

Validation rules

• List prices must be non-negative.
• Percent discount must be between 0% and 100%.
• In multi-item discount, the number of items received ($X$) must be greater than the number of items paid for ($Y$), and both must be greater than zero.