Percentage Calculator

Calculate percentages instantly -- no sign-up required.

% What is X% of Y?

Find a percentage of any number.

Enter values above
?% X is what % of Y?

Find what percentage one number is of another.

Enter values above
+/- Percentage Change

Calculate the percentage increase or decrease from one number to another.

Enter values above
+% Add or Subtract a Percentage

Add or subtract a percentage to/from a number.

Enter values above

How to Use

1

Choose the type of percentage calculation you need.

2

Enter your numbers in the input fields.

3

See the result instantly, then copy it if needed.

𝕏 Share Facebook LinkedIn Reddit
Used 0 times on this device

How to Use Percentage Calculator

  1. 1
    Choose the calculation type
    Select from: What is X% of Y, X is what % of Y, Percentage change from X to Y, or Add/subtract percentage.
  2. 2
    Enter the values
    Fill in the required numbers for the selected calculation type.
  3. 3
    Click Calculate
    The result is computed instantly and shown with a clear explanation of the calculation.
  4. 4
    Use the result
    Copy the answer or use it directly. Switch calculation types without refreshing.

Features

Use Cases

Shopping discounts

Calculate how much you save on a 30% discount, or find the price after a percentage reduction in sale prices.

Tax and tip calculation

Add a percentage-based tax or service charge to a bill amount before settling a restaurant or service invoice.

Grade and score calculation

Convert a raw score to a percentage grade, or find out what score you need to reach a target percentage.

Financial and investment returns

Calculate the percentage gain or loss on an investment, or find what percentage of a total budget has been spent.

Business metrics

Track percentage growth in revenue, user base, or conversion rates between periods.

Frequently Asked Questions

Q: How do I calculate what percentage one number is of another?

Divide the part by the whole and multiply by 100. For example, 25 out of 200 = (25/200) × 100 = 12.5%.

Q: What is percentage change?

Percentage change = ((New Value - Old Value) / Old Value) × 100. A positive result is an increase; negative is a decrease.

Q: Is the tool accurate for financial calculations?

Yes. The tool uses standard mathematical formulas with floating-point precision. For critical financial decisions, always verify results.

Q: Can I calculate a percentage of a percentage?

Yes. Use the basic mode twice: first calculate the inner percentage, then apply the outer percentage to the result.

Q: Is my data sent to a server?

No. All calculations happen in your browser.

More Free Tools

📄 Document

PDF MergerPDF SplitterPDF CompressorMarkdown to HTML ConverterPDF Page RotatorInvoice Generator

🖼️ Image

Image ResizerImage CompressorImage Format ConverterImage CropperFavicon Generator

🔊 Audio

MP3 CutterAudio ConverterAudio JoinerOnline MetronomeAudio Speed Changer

🎬 Video

Video to GIFVideo CompressorVideo to MP3 ConverterVideo Screenshot ExtractorVideo Trimmer

📝 Text

Word & Character CounterText Diff CheckerCase ConverterRegex TesterLorem Ipsum Generator

🔄 Data Format

JSON Formatter & ValidatorCSV ↔ JSON ConverterBase64 Encoder / DecoderURL Encoder / DecoderXML Formatter & ValidatorNumber Base Converter

🔢 Calc / Finance

Unit ConverterPercentage CalculatorLoan CalculatorDate CalculatorTip CalculatorCompound Interest Calculator
Sister site: GenFactories – Fun Generators