Discount Calculator
Apply a percent discount to a price and show savings and final amount. Runs locally in your browser. Free online tool — no sign-up. Try it free.
Trust summary Engine tested · Specification checked · v1.1.0
- Input interpretation
- Enter values to calculate.
- Result
- —
- Model
- Sale price and amount saved.
- Scope
- Fixed rates and terms as entered; no fees or taxes unless modeled.
- Verification
- Engine tested · Specification checked · v1.1.0
- Named expert review
- Optional · Not performed
- Specification basis
- Retail / managerial pricing arithmetic — sale price = original × (1 − discount%)
- FTC / consumer pricing education (conceptual) — advertised percentage off vs cash savings
Formulas
Core equations used by this calculator.
How to use
Enter the known values
Fill in each field with amounts and rates as labeled.
Calculate
Results update as you type; compare scenarios below when available.
Read the outputs
Check the result panel for the primary figure and supporting totals.
Example calculations
Common configurations with formula and result.
Worked example
80 with 25% off → sale 60 · saved 20
Discount calculator specification
Version 1.1.0 · Engine tested
- Engine tested 3 published cases
- Named expert review Not performed
- Calculation version 1.1.0
- Definition
- A percentage discount reduces the original price: sale = original × (1 − d/100). Savings equal original − sale.
- What it calculates
- Sale price and amount saved.
- Inputs
- Values shown on the calculator form
- Outputs
- Primary result in the result panel
- Formula
Sale = original × (1 − d/100)- Assumptions
- Fixed rates and terms as entered; no fees or taxes unless modeled.
- Calculation runs locally in the browser.
- Units
- Currency units as entered (dimensionless rates in %)
- Boundary conditions
- Zero or missing required fields yield zero or empty results.
- Negative inputs are treated as zero.
- Example
- 80 with 25% off → sale 60 · saved 20
- Validation cases
3 published on this page
- 80 · 25% → sale 60
- 100 · 0% → sale 100
- 50 · 10% → sale 45
- Specification basis
- Retail / managerial pricing arithmetic — sale price = original × (1 − discount%)
- FTC / consumer pricing education (conceptual) — advertised percentage off vs cash savings
- Calculation version
- 1.1.0
Background
Interpretation and common distinctions.
About this calculator
A percentage discount reduces the original price: sale = original × (1 − d/100). Savings equal original − sale.
Example
80 with 25% off → sale 60 · saved 20
Related tools
Other calculators in this family: Compound Interest, Simple Interest, ROI Calculator .
Frequently asked questions
Key distinctions behind the calculation.
How does the Discount Calculator work?
It uses Sale = original × (1 − d/100). All math runs locally in your browser.
Can I share my inputs?
Yes. Use Copy link in the result panel — the URL stores your current inputs.