Back to home

Percentage Calculator - Free Online Tool

Calculate what a given percentage of a number is in one step. Enter the value and the percentage (e.g. 500 and 20 to find 20% of 500). The formula used is: result = value × (percentage ÷ 100). No signup required; the calculation runs in your browser. Useful for tips, tax estimates, discounts, markups, and any situation where you need to find a portion of a quantity expressed as a percentage.

Percentage Calculator

How to Use This Tool

  1. Enter the base value in the first field (e.g. 500 for ₹500 or 500 units).
  2. Enter the percentage in the second field (e.g. 20 for 20%).
  3. The result appears automatically: the percentage of the value you entered.
  4. Adjust either number to recalculate instantly.

Benefits of Using This Tool

  • Instant calculation with no submit button; results update as you type.
  • Works for any unit (currency, count, weight) as long as you use consistent units.
  • No account or installation; use in the browser on any device.

When to Use Percentage Calculator

  • Finding a tip amount: e.g. 15% of a bill.
  • Estimating tax or GST on a pre-tax amount before using a dedicated tax calculator.
  • Computing a discount amount: e.g. 25% off a listed price.
  • Calculating markups, commissions, or revenue share as a percentage of a base figure.

Decision Guide

Best for

  • Quick “what is X% of Y?” calculations without opening a spreadsheet.
  • Double-checking percentage amounts before applying them in invoices or reports.
  • Learning or teaching how percentage of a value is computed.

Avoid when

  • You need to add or subtract a percentage from a value (e.g. “price plus 18% GST”); use the GST or discount calculator for those flows.
  • You need compound percentages or weighted averages; use a spreadsheet or a more advanced calculator.

Example

What is 20% of 500?

Input

Value: 500, Percentage: 20

Output

20% of 500 = 100

So 20% of 500 is 100. For “500 increased by 20%” you would add 100 to get 600.

FAQs

What formula does this use?

Result = value × (percentage ÷ 100). For example, 20% of 500 = 500 × (20 ÷ 100) = 500 × 0.2 = 100.

Can I use decimals for the percentage?

Yes. You can enter 12.5 for 12.5% or 0.5 for 0.5%. The tool accepts decimal percentages.

Is the result in the same units as the value?

Yes. If you enter 500 (rupees, items, or any unit), the result is in the same unit (e.g. 20% of ₹500 = ₹100).

You Might Also Like

GST Calculator
Live
Calculate GST, net amount, and gross amount for Indian GST rates.
Discount Calculator
Live
Find discounted price and amount saved from original price and discount percentage.
Age Calculator
Coming Soon
Coming soon.
Average Calculator
Coming Soon
Coming soon.
Margin Calculator
Coming Soon
Coming soon.
JSON Formatter
Live
Pretty-print and format JSON with configurable indentation.
Back to Free Tools