Percentage Calculator

Percentage calculations are used in almost every area of daily life — from calculating exam marks, discounts, tax, GST, tips, profit/loss, interest rates, and more. Yet many people struggle with quick and accurate percentage math.

Our free Percentage Calculator handles all types of percentage calculations instantly: find a percentage of a number, calculate what percent one number is of another, find the percentage increase or decrease, and more. No mental math needed.

Percentages are everywhere — discounts, marks, salary hikes, GST, and interest rates. Our Percentage Calculator solves all three types of percentage problems instantly:

Mode 1: What is X% of a number? (e.g. What is 15% of ₹5,000?)

Mode 2: X is what percentage of Y? (e.g. 750 is what % of 5,000?)

Mode 3: What is the % change? (e.g. Salary increased from ₹50,000 to ₹60,000 — what % hike?)

Our calculator handles four common percentage types:

Type 1 — What is X% of Y₹

Result = (X / 100) × Y

Example: What is 18% of ₹5,000₹ = (18/100) × 5,000 = ₹900

Type 2 — X is what % of Y₹

Percentage = (X / Y) × 100

Example: 450 is what % of 1800₹ = (450/1800) × 100 = 25%

Type 3 — Percentage Increase

% Increase = ((New Value − Old Value) / Old Value) × 100

Example: Price increased from ₹200 to ₹250: % increase = (50/200) × 100 = 25%

Type 4 — Percentage Decrease

% Decrease = ((Old Value − New Value) / Old Value) × 100

Example: Price fell from ₹500 to ₹400: % decrease = (100/500) × 100 = 20%

1. Select Mode — Choose the type of percentage problem from the 3 tabs at the top.
2. Enter Values — Fill in the required numbers for the selected mode.
3. Read Results — The answer appears instantly, along with increase/decrease values where applicable.

Switch between modes freely — the calculator resets inputs automatically when you change mode.

• Shopping: Calculate discount amounts and final prices during sales.
• Finance: Interest rates, loan calculations, investment returns are all expressed as percentages.
• Exams & Marks: Convert raw marks to percentage for results, cutoffs, and rankings.
• Tax & GST: Calculate GST amounts, income tax, TDS — all percentage-based.
• Business: Profit margins, revenue growth, market share — all use percentages.
• Health: Body fat percentage, BMI range, calorie deficit — percentages everywhere.

Exam Marks — Universities and boards report marks as percentages. Calculate your aggregate percentage across subjects instantly.

Salary Hike — Verify your % salary increase or negotiate knowing exact numbers. A ₹5,000 raise on ₹50,000 = 10% hike.

Shopping Discounts — Know exactly how much you save before purchasing. 20% off ₹2,499 = ₹499.80 savings.

Bank Interest — Calculate simple interest or compare FD rates quickly using percentage formulas.