The Percentage Calculator is a powerful and easy-to-use tool designed to quickly find percentages, percentage changes, percentage increase or decrease, and percentage-based comparisons. Whether you're calculating your exam score, sales commission, discounts, or financial metrics, this calculator simplifies all your percentage-related calculations in just a few clicks.
A percentage is a number or ratio expressed as a fraction of 100. It is denoted using the percent sign %. For example, 25% means 25 out of 100. Percentages are used widely in daily life to compare quantities, express discounts, calculate interest rates, or analyze data.
The basic formula to calculate percentage is:
Percentage (%) = (Part / Whole) Ă— 100
Example: If a student scored 45 out of 50 in an exam, the percentage would be:
(45 / 50) Ă— 100 = 90%
Our Percentage Calculator is very intuitive:
Percentages are everywhere! Here's how they're used:
Percentage Increase = [(New Value - Old Value) / Old Value] Ă— 100
Example: If a product’s price increases from ₹200 to ₹250:
Percentage Increase = [(250 - 200) / 200] Ă— 100 = 25%
Percentage Decrease = [(Old Value - New Value) / Old Value] Ă— 100
Example: If revenue drops from â‚ą1500 to â‚ą1200:
Percentage Decrease = [(1500 - 1200) / 1500] Ă— 100 = 20%
Formula: (Part / Whole) Ă— 100
Example: What percent is 45 of 150?
(45 / 150) Ă— 100 = 30%
Formula: Base = (Part Ă— 100) / Percentage
Example: 25 is 20% of what number?
Base = (25 Ă— 100) / 20 = 125
| Percent | Decimal | Fraction |
|---|---|---|
| 10% | 0.10 | 1/10 |
| 25% | 0.25 | 1/4 |
| 33.33% | 0.3333 | 1/3 |
| 50% | 0.50 | 1/2 |
| 75% | 0.75 | 3/4 |
| 100% | 1.00 | 1/1 |
Use this calculator! But manually, use the formula: (part/whole) Ă— 100.
Yes! This tool supports both percentage increase and decrease calculations.
Absolutely. This online percentage calculator is completely free to use.
Yes, it’s ideal for financial analysis, sales reports, and budgeting tasks.
Yes, it is built with precise formulas for accurate percentage results.
The Percentage Calculator is a handy online tool for everyone—students, professionals, shoppers, or financial planners. Whether you need to calculate a discount, analyze financial growth, or just convert values into percentage format, our calculator gives you fast and accurate results. No need for manual math or complex spreadsheets. Bookmark this page and use it anytime you need help with percentages!
Try it now and make all your percentage calculations effortless.
Percentages are useful across every aspect of life. Here are a few practical scenarios where you’ll find yourself needing a percentage calculator:
While you could manually calculate percentages using formulas, online percentage calculators like this one offer a much more efficient, error-free experience. Here's why:
A reverse percentage is when you know the final value and the percentage, but you want to find the original value.
Formula: Original Value = Final Value / (1 ± (Percentage ÷ 100))
Example: If a price after a 20% discount is â‚ą800, the original price is:
â‚ą800 / (1 - 0.20) = â‚ą1000
Although similar sounding, there’s a difference between percentage and percentage points:
The term "percent" comes from the Latin "per centum," meaning "by the hundred." The use of percentages dates back to ancient times when people needed a simple way to compare parts of a whole. The percentage system became widely adopted during the Renaissance and is now essential in mathematics, economics, and science.
In data science, percentages are used in pie charts, ratios, success rates, and metrics. They simplify interpretation by standardizing values. For example, customer satisfaction scores or conversion rates are always expressed in percentages to give clear insights.
To calculate a discount:
Discount = Original Price Ă— (Discount % / 100)
Final Price = Original Price - Discount
Example: 25% off on â‚ą2000 = â‚ą2000 Ă— 0.25 = â‚ą500. Final Price = â‚ą1500
In India, the Goods and Services Tax (GST) is based on percentages like 5%, 12%, 18%, and 28%. If you're buying a product worth â‚ą1000 with 18% GST, the tax is â‚ą180. Businesses use percentage calculators to break down prices into base price and tax portions accurately.
Companies often give raises in percentage format. For example, if your salary increases by 10% from â‚ą50,000, the new salary becomes â‚ą55,000. Similarly, deductions (PF, TDS) are calculated as percentages.
Students frequently need to convert raw scores to percentages. For instance, if you scored 360 out of 500, the percentage is:
(360 / 500) Ă— 100 = 72%
Climate reports, pollution indices, and energy savings are often reported using percentages. For example, "CO2 emissions dropped by 13% in the past decade."
Polling data is mostly shown in percentages to reflect voter turnout or party preferences. For example: "Party A leads with 42% votes."
Percentage Error = |Actual - Estimate| / Actual Ă— 100
This is used in science and engineering to evaluate how far a measured value is from the real one.
Banks and forex services often charge a percentage as conversion fee. For example, 2% fee on converting â‚ą10,000 to USD = â‚ą200 charge.
Students can use this calculator to see how much they’ve improved in percentage terms between tests. If you scored 60/100 before and now scored 75/100:
[(75-60)/60] Ă— 100 = 25% improvement
The Percentage Calculator is more than just a math tool—it's a companion for daily decisions, academic performance, financial planning, and professional analysis. Whether you’re calculating discounts, analyzing data, or evaluating your growth, percentages are an essential part of modern living.
Bookmark this tool and return whenever you need to make quick, accurate percentage-based decisions!