🛒 13 Calculators · 5 Topics · Updated April 2026
Shopping Calculators
Free shopping calculators to compare unit prices, calculate sales tax, stack coupon savings, and track subscription costs. Shop smarter.
Make smarter purchasing decisions with tools that compare unit prices, calculate sales tax, estimate total coupon savings, and add up your monthly subscription costs so you know exactly where your money goes.
Most Popular
Price Per Unit Calculator
Compare unit prices between different sizes.
Sales Tax Calculator
Calculate sales tax amount and total price for any purchase.
Coupon Savings Calculator
Calculate total savings when stacking coupons and discounts.
Subscription Cost Calculator
Add up all your subscriptions to see the real annual cost.
Browse by Topic
Comparison
1 calculatorUnit price and value comparison tools.
Savings
1 calculatorCoupon stacking and discount calculators.
Value
1 calculatorCost-per-wear and long-term value analysis.
Budgeting
1 calculatorSubscription tracking and spending analysis.
Shopping
9 calculatorsUnit Price Comparison
Cents-per-unit across pack sizes.
Bulk Discount Calculator
Effective price after volume discount tiers.
BOGO Savings Calculator
Effective cost under buy-one-get-one deals.
Final Price with Tax Calculator
After-tax and shipping total.
Coupon Stack Calculator
Final price after stacked discounts.
Gift Card Split Calculator
Split cost across gift cards + credit card.
Subscription Value Calculator
Per-use price of a subscription.
Return Policy Window Calculator
Days remaining to return an item.
Extended Warranty Value Calculator
Expected value of an extended warranty.
Frequently Asked Questions
How do I compare prices between different package sizes?
Divide the price by the quantity (ounces, count, etc.) to get the unit price. The lower unit price is the better deal, regardless of package size.
Is buying in bulk always cheaper?
Usually, but not always. Always check the unit price. Also consider storage space and expiration dates, a deal is only good if you use the product before it goes to waste.