Shopping & Retail
Discount Calculator
Sale price and savings after a percentage discount, with optional extra discount and sales tax.
Sale price = price × (1 − discount)
Also called percent off calculator · sale discount
Business & Work · 14 calculators
Shopping & Retail Calculators
Discounts, sale prices, original prices, stacked discounts, coupons, cashback, unit prices, tips and bill splits.
Shopping & Retail
Sale Price Calculator
Final sale price after a percentage or fixed-amount discount — how much you actually pay.
Sale = price − discount
Also called final price after discount · price after discount
Shopping & Retail
Original Price Calculator
Find the original price before a discount from the sale price and percentage off.
Original = sale ÷ (1 − discount)
Also called price before discount · find original price
Shopping & Retail
Percentage Discount Calculator
What percent off is it? Find the discount percentage from the original price and sale price.
Discount % = (original − sale) ÷ original…
Also called what percent off · discount percentage
Shopping & Retail
Double Discount Calculator
Stacked discounts like 30% + 20% off: final price and the true combined discount (it is not 50%).
Final = price × (1 − d₁)(1 − d₂)
Also called stacked discount · additional discount
Shopping & Retail
Coupon Savings Calculator
Total savings from coupons and promo codes on a cart — percent-off or fixed-amount — and the final total.
Total = cart × (1 − %) − fixed
Also called promo code savings · coupon discount
Shopping & Retail
Cashback Calculator
Cashback earned from a purchase or monthly card spending, with caps — and the effective price after cashback.
Cashback = spend × rate (up to the cap)
Also called cash back rewards · credit card cashback
Shopping & Retail
Unit Price Calculator
Price per unit (per item, ounce, gram, liter…) so you can compare package sizes and find the best value.
Unit price = price ÷ quantity
Also called price per unit · cost per unit
Shopping & Retail
Price Per KG Calculator
Price per kilogram from a pack price and weight in grams or kilograms — compare groceries fairly.
Price per kg = price ÷ weight in kg
Also called price per kilogram · cost per kg
Shopping & Retail
Price Per Pound Calculator
Price per pound from a package price and weight in ounces or pounds, plus the price per kilogram.
Price per lb = price ÷ weight in lb
Also called cost per pound · price per lb
Shopping & Retail
Bulk Discount Calculator
Is buying in bulk worth it? Compare the bulk price per unit with the regular price and your total savings.
Savings = regular × qty − bulk price
Also called buy in bulk savings · quantity discount
Shopping & Retail
Buy One Get One Calculator
Real discount of BOGO deals — buy one get one free, 50% off, or buy X get Y — and cost per item.
Discount = 1 − deal total ÷ (price × item…
Also called bogo discount · buy one get one free
Shopping & Retail
Tip Calculator
Calculate the tip and total bill, split between any number of people, with optional rounding up.
Tip = bill × %; each = (bill + tip) ÷ peo…
Also called gratuity calculator · tip percentage
Shopping & Retail
Split Bill Calculator
Split a restaurant or group bill evenly including tax and tip, so everyone knows exactly what to pay.
Each = (bill + tax + tip) ÷ people
Also called bill splitter · bill split calculator
Key shopping & retail formulas
| Discount | Sale price = price × (1 − discount) |
|---|---|
| Sale Price | Sale = price − discount |
| Original Price | Original = sale ÷ (1 − discount) |
| Percentage Discount | Discount % = (original − sale) ÷ original × 100 |
| Double Discount | Final = price × (1 − d₁)(1 − d₂) |
| Coupon Savings | Total = cart × (1 − %) − fixed |
| Cashback | Cashback = spend × rate (up to the cap) |
| Unit Price | Unit price = price ÷ quantity |
| Price Per KG | Price per kg = price ÷ weight in kg |
| Price Per Pound | Price per lb = price ÷ weight in lb |