How to Use
Select Find SP (selling price), Find Marked Price, or Find Discount % from the tabs.
Fill in the two known values — the calculator solves for the missing one.
Click Calculate to see the answer with complete formula-based working.
Frequently Asked Questions
Discount Amount = MP × (D% / 100)
Selling Price = MP − Discount = MP × (1 − D/100)
Example: MP = ₹500, Discount = 20% → Discount = ₹100, SP = ₹400.
Use: MP = SP × 100 / (100 − D%)
Example: SP = ₹400, Discount = 20% → MP = 400 × 100 / 80 = ₹500.
Think of it as: SP is (100 − D)% of MP, so MP = SP ÷ (100−D)%.
Discount % = ((MP − SP) / MP) × 100
Example: MP = ₹500, SP = ₹400 → Discount = ₹100 → D% = (100/500) × 100 = 20%.
Note: Discount % is always calculated on the Marked Price, not the Cost Price.
Successive discounts are two discounts applied one after another on the reduced price.
Net discount = d1 + d2 − (d1 × d2) / 100
Example: 20% then 10% → Net = 20 + 10 − 2 = 28% (not 30%).
Why? After 20% off ₹500 = ₹400, then 10% off ₹400 = ₹40 → SP = ₹360 → Net D% = (140/500)×100 = 28%.
Discount is always on Marked Price (MP); Profit/Loss is on Cost Price (CP).
A shopkeeper may give a discount and still make profit: buy at ₹300 (CP), mark at ₹500 (MP), give 20% discount → SP = ₹400 → Profit = ₹100 on CP = 33.3% profit.
Exam tip: when both discount % and profit % are given, use SP as the bridge — compute SP from both sides.
Discount questions appear in the Profit, Loss & Discount chapter of SSC CGL, CHSL, IBPS PO, Clerk, and Railway exams. Common types: find SP from MP and D%, find MP from SP and D%, successive discounts, and combined profit-loss-discount problems where CP, MP, and D% are all involved.