Percentage Calculator — Instant Percentage Calculations — India 2026
Free percentage calculator. Calculate percentage of a number and percentage increase or decrease and convert between fractions and percentages.
Percentages are used everywhere from calculating discounts during shopping to figuring out exam scores from understanding interest rates to computing tax amounts. Our percentage calculator handles all common percentage calculations instantly. Whether you need to find what is 15% of 800 or calculate the percentage increase from 200 to 250 or figure out the original price before a 30% discount just enter your numbers and get instant results.
How do I calculate percentage of a number?
To calculate percentage of a number multiply the number by the percentage and divide by 100. For example 20% of 500 = 500 x 20 / 100 = 100. You can also convert the percentage to a decimal first: 20% = 0.20 then multiply 500 x 0.20 = 100.
Calculate Now
Percentage Calculator
How to Use This Calculator
Enter your values in the fields above and the calculator will compute results instantly as you type. You can adjust any input to compare different scenarios. All calculations happen in your browser — no data is sent to any server and nothing is stored. Use the share buttons below the results to save or send your calculations via WhatsApp, Twitter, or by copying the link. For related calculations, check the suggested tools in the "What to calculate next" section below.
Key Information
| Parameter | Details |
|---|---|
| Basic Formula | Percentage = (Part / Whole) x 100 |
| Increase Formula | New Value = Original x (1 + Percentage/100) |
| Decrease Formula | New Value = Original x (1 - Percentage/100) |
| Reverse Formula | Original = Final / (1 + Percentage/100) |
Calculate percentages instantly
Get accurate results instantly — 100% free, no signup required
Use Calculator NowFrequently Asked Questions
How do I calculate percentage of a number?
To calculate percentage of a number multiply the number by the percentage and divide by 100. For example 20% of 500 = 500 x 20 / 100 = 100. You can also convert the percentage to a decimal first: 20% = 0.20 then multiply 500 x 0.20 = 100.
How to calculate percentage increase?
Percentage increase = ((New Value - Old Value) / Old Value) x 100. For example if a price increased from Rs 200 to Rs 250 the percentage increase = ((250-200)/200) x 100 = 25%. This formula works for any type of increase whether prices salaries scores or quantities.
How do I reverse calculate a percentage?
To find the original value before a percentage was applied divide the final value by (1 + percentage/100). For example if an item costs Rs 1180 after 18% GST the original price = 1180 / 1.18 = Rs 1000. This is useful for removing tax or discount from a final price.
Are these calculators free to use?
Yes, all calculators on CalcCorp are completely free — no registration, no login, no hidden charges. Results are calculated instantly in your browser and we do not store any of your data.
How accurate are these calculations?
Our calculators use standard financial formulas updated with the latest tax rates, interest rates, and government policies for 2026. Results are accurate for planning purposes but should be verified with a professional for final decisions.
Related Calculators
More Utility Calculators
Last updated: March 2026