Percentage Calculator

Calculate percentages, percentage changes, and tips in seconds

Basic Percentage Calculator

Calculate a percentage of a given value.

Result

15.00

15% of 100 = 15.00

Results update automatically as you type

Percentage Change Calculator

Calculate the percentage change between two values.

Result

Percentage Change: 20.00% Increase
Absolute Change: 20.00

The value increased from 100 to 120, which is an increase of 20.00%.

Results update automatically as you type

Tip Calculator

Calculate tips and split bills among multiple people.

Result

Tip Amount: $7.50
Total Bill: $57.50
Amount Per Person: $57.50

Results update automatically as you type

About Percentage Calculator

Zeta Calculator's Percentage Calculator is a versatile tool that helps you with various percentage-related calculations. Whether you need to find a percentage of a number, calculate percentage changes, or figure out tips and bill splits, our calculator makes these tasks quick and easy.

Calculator Features

  • Basic Percentage: Calculate what percentage of a number is another number, or find a specific percentage of a value
  • Percentage Change: Calculate the percentage increase or decrease between two values, useful for financial analysis, sales comparisons, and more
  • Tip Calculator: Quickly determine appropriate tip amounts, calculate the total bill, and even split the bill among multiple people

How to Use

  1. Select the appropriate calculator tab based on your needs
  2. Enter the required values in the input fields
  3. Results will update automatically as you type
  4. Use the "Reset" button to clear all fields when needed
  5. For the tip calculator, use the preset percentage buttons for quick selection

Common Percentage Formulas

  • Finding a percentage of a value: (Percentage × Value) ÷ 100
  • Calculating what percent X is of Y: (X ÷ Y) × 100
  • Percentage increase/decrease: ((New Value - Original Value) ÷ Original Value) × 100
  • Tip amount: Bill Amount × (Tip Percentage ÷ 100)

Percentages are used in many aspects of daily life, from shopping discounts and tax calculations to financial planning and academic grading. Our calculator makes these calculations accessible to everyone, saving time and ensuring accuracy.