Calculate final price and savings on discounted products
Enter the original price and discount percentage to instantly see the final amount to pay and exact monetary savings.
Calculators
Percentage Calculator
FreeLocal processingv1.0.0
Calculate discounts, price increases, card processing fees, profit margins, and percentage changes with local device history.
About this app
Need to know the final price of a discounted item, check whether a promotion is truly worth it, or find out how much to charge to cover payment terminal fees without losing money? Percentage Calculator solves commercial and everyday calculations through intuitive interactive cards framed around real-world questions.
Choose your profile in one tap: activate 'I am a customer' to prioritize cash discounts, original prices before sale, and cash vs. installment comparisons; or select 'I am a seller' for instant card fee pass-through, list pricing for discounts, profit margins on cost and sales, and commissions.
Every calculation highlights the bottom line, the exact monetary difference, and a step-by-step formula breakdown with one-tap copy. All your records are securely preserved in a local browser database on your device, allowing you to select rows, batch delete, inspect details, or reopen past calculations for editing. Processing is 100% local in your browser, with zero external server tracking.
Features
Find the true discount percentage between two prices
Type the original price and promotional price to verify if a deal is genuine and discover the exact discount percentage.
Calculate payment processing fee pass-through without loss
Discover the exact amount to charge on credit cards to receive your targeted net payout after payment gateway fees.
Set list prices to offer promotional discounts without eating profits
Find the list price to put on tags so that offering an advertised discount still leaves you with your target revenue.
Calculate profit margins on cost markup or gross selling price
Enter item cost and desired margin to get suggested selling prices and unit profit without confusing markup and gross margin.
Compare upfront cash discounts versus installment plans
Determine whether paying upfront or financing is better by comparing total cash differences and embedded installment rates.
Local history with item selection, batch deletion, and calculation reopening
Store calculations in your browser’s local database, select records in batches, and tap any calculation to inspect details or edit again.
Frequently asked questions
Are my calculated values and records saved on external servers?
No. All calculations and history entries are saved exclusively in your browser’s local database (IndexedDB). Your financial figures never leave your device.
What is the difference between customer and seller modes?
Profiles prioritize the calculation cards most relevant to your workflow. Your selection is remembered locally so your most-used tools are always front and center.
Why does adding a processing fee directly on top cause a financial loss?
Payment gateway fees apply to the gross transaction total. If you want $100 net with a 5% fee and charge $105, the processor takes 5% of $105 ($5.25), leaving you with $99.75. The card fee calculator uses the factor division formula to ensure you receive your full target amount.
Can I use the percentage calculator without an active internet connection?
Yes. The application functions as an offline-ready PWA and runs smoothly without internet access once initially loaded.
Questions
No published answers yet.