Live result as you type
The numbers re-compute the moment you change the amount, the percent, or the method. No Calculate button to click.
Discount Calculator
Type an amount, pick a discount percent, and the original price, savings, and final price update instantly. Standard mode finds the sale price; Reverse mode works back from a sale price to the original.
Guide
How to use the discount calculator
1
Enter the amount
In Standard mode the amount is the original (pre-discount) price. In Reverse mode the amount is the final (post-discount) price you saw on the tag or invoice.
2
Pick the discount percent
Choose any percent from 5% to 80% in the Discounted % dropdown. The list covers the common retail sale brackets including the steep clearance numbers.
3
Choose a method
Standard takes the original and finds the sale price. Reverse takes the sale price and finds the original. The math switches automatically.
4
Read the result
The equation row shows Original Price minus You Save equals Final Price. Numbers re-compute the moment you change any field, no Calculate button needed.
What this calculator does
A discount calculator answers two everyday questions. If a coat is ₹2,500 and the rack tag says 30% off, what do I pay at the till? And the reverse: I paid ₹1,750 for the coat with a 30% discount tag, so what was the original price?
Type your amount, pick a discount percent from the dropdown, and choose the method. Standard treats your amount as the original price and shows the sale price plus the rupees you save. Reverse treats your amount as the sale price and back-calculates the original. Everything updates the moment you change a field.
Common discount percentages are pre-loaded (5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, 70%, 75%, 80%) which covers most retail sales and clearance scenarios. Numbers round to two decimal places. Nothing is sent to a server.
Benefits
Why use this discount calculator
Standard and Reverse in one tool
Most calculators only do one direction. Switch the Discount Method dropdown to flip between "what will I pay" and "what was the original" without leaving the page.
Twelve common discount percents
Presets for 5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, 70%, 75%, and 80%. Covers seasonal sales, member discounts, and clearance.
Three figures, one equation
The result reads as a sentence: Original Price minus You Save equals Final Price. No table, no chart, just the numbers you need.
Stays in the browser
Math runs locally in JavaScript. No upload, no signup, no analytics on the amounts you type. Open dev tools and watch the network panel stay empty.
Clean number formatting
Whole numbers display without decimal padding (₹100, not ₹100.00). Decimal amounts show exactly two places, with thousand separators for readability.
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FAQ
Frequently Asked Questions
Quick answers about discount math, Standard vs Reverse mode, and what this tool does.
How do you calculate a discounted price?
Multiply the original price by the discount percent divided by 100. That is the amount you save. Subtract it from the original to get the sale price. For ₹2,500 at 30% off: savings ₹750, sale price ₹1,750.
How do I find the original price from a discounted price?
Use the formula original = sale × 100 / (100 − discount%). For a ₹1,750 final price with 30% off, the original was ₹1,750 × 100 / 70 = ₹2,500. Switch the calculator to Reverse mode and it does this for you.
What is the difference between Standard and Reverse mode?
Standard mode takes the original price (your amount) and shows what you will pay after the discount. Reverse mode takes a sale price (your amount) and back-calculates what the original was. Same percent dropdown for both.
Why is the Discounted % a dropdown and not a free field?
A dropdown matches the way retail sales actually work, twelve common percentages from 5% to 80%. It is faster to click than to type and it stops typos. If you need an unusual percent like 33% or 22%, let me know and I will add a custom field.
Does this work for currencies other than INR?
The math is currency-agnostic. The symbol shown is ₹ but the numbers are correct for any currency. A 25% discount on ₹400 is the same arithmetic as a 25% discount on $400 or €400.
Can a discount go above 100%?
No. 100% off means free; anything above means the store would pay you. The dropdown stops at 80% which is already extreme clearance pricing. In Reverse mode, very high percents push the original price arbitrarily high, so use them only with realistic sale prices.
Are my amounts sent anywhere?
No. The calculation runs in JavaScript inside your browser tab. No upload, no signup, no analytics on the amounts you type.