Percentage Calculator

X% of Y

Result:

What percent is A of B?

Result: %

Increase/Decrease by X%

Increased:

Decreased:

Percentage Change

Change: %

Reverse Percentage (Find Base)

Base Value:

Find Original (Reverse Increase/Decrease)

Original (if increased):

Original (if decreased):

Percentage Points Difference

Difference: points

Sales Tax Calculator

Price with Tax:

Price before Tax:

Stacked Discounts (Double Discount)

Final Price:

Effective Total Discount: %

Price Change & Discount Combo

Price after Markup:

Final Price after Discount:

Net Percentage Change: %

Comprehensive Percentage Calculator

Calculate percentages easily. Find X% of Y, percentage increase/decrease, reverse percentages, tax, discounts, and more. Free online tool for all your percentage math needs.

Features

  • X% of Y: Find a percentage of a number.
  • Percentage Change: Calculate the percent increase or decrease between two values.
  • Reverse Percentage: Find the original value before a percentage change or tax.
  • Sales Tax & Discounts: Calculate final price after tax or discount.
  • Stacked Discounts: See the effective discount when multiple coupons are applied.

Common Formulas

CalculationFormula
P% of XX × (P / 100)
What % is A of B(A / B) × 100
Percent Change((New - Old) / Old) × 100
Increase by P%X × (1 + P / 100)

Comprehensive Percentage Calculator

Solve any percentage-related problem instantly with our all-in-one Percentage Calculator. Whether you're calculating a discount, figuring out a tip, or analyzing financial growth, this tool makes the math easy.

Available Calculations

Real-World Applications

Finance & Shopping

Easily calculate sales tax, discounts during sales, and tip amounts at restaurants.

Business & Education

Analyze profit margins, growth rates, and grade percentages with precision.

Tip: You can use decimal numbers (e.g., 12.5%) for more precise calculations.