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Percentage Calculator

Work out percentages, discounts, markups, and percentage changes with ease.

What is the percentage?

Calculate what percentage one number is of another (e.g., 10 is what % of 50).

Result:—%

What is the part?

Calculate a specific percentage of a total (e.g., what is 20% of 50).

Result:—

What is the total?

Determine the total when you know a part and its percentage (e.g., 10 is 20% of what).

Result:—

Percentage change

Find the percentage increase or decrease from one value to another.

Result:—

Increase by percentage

Add a specific percentage to a given value.

Result:—

Decrease by percentage

Subtract a specific percentage from a given value.

Result:—

About percentage calculator

Our Percentage Calculator is a versatile and user-friendly tool designed to help you quickly solve a variety of percentage-based problems. Whether you need to figure out a tip, calculate a discount, determine a percentage increase or decrease, or simply find what percentage one number is of another, this tool has you covered.

Features

  • Calculate Percentage: Find out what percentage one number is of another (e.g., 10 is what % of 50).
  • Find the Part: Calculate the value of a specific percentage of a total (e.g., what is 20% of 50).
  • Find the Total: Determine the total number when you know a part and its percentage (e.g., 10 is 20% of what).
  • Percentage Change: Quickly find the percentage increase or decrease from one value to another.
  • Increase by Percentage: Add a specific percentage to a given value.
  • Decrease by Percentage: Subtract a specific percentage from a given value.

Formulas

Calculate Percentage (What % is Part of Total?)

Percentage=(PartTotal)×100\text{Percentage} = \left( \frac{\text{Part}}{\text{Total}} \right) \times 100

Find the Part (What is X% of Total?)

Part=Total×(Percentage100)\text{Part} = \text{Total} \times \left( \frac{\text{Percentage}}{100} \right)

Find the Total (Part is X% of what?)

Total=Part(Percentage100)\text{Total} = \frac{\text{Part}}{\left( \frac{\text{Percentage}}{100} \right)}

Percentage Change

Change (%)=(New−OldOld)×100\text{Change (\%)} = \left( \frac{\text{New} - \text{Old}}{\text{Old}} \right) \times 100

Increase by Percentage

Result=Value×(1+Percentage100)\text{Result} = \text{Value} \times \left( 1 + \frac{\text{Percentage}}{100} \right)

Decrease by Percentage

Result=Value×(1−Percentage100)\text{Result} = \text{Value} \times \left( 1 - \frac{\text{Percentage}}{100} \right)

Privacy and Security

We value your privacy. All calculations are performed entirely within your browser (client-side). No data is sent to our servers, ensuring your inputs remain completely private and secure.

Offline Capability

This tool works completely offline! Once loaded, you can bookmark this page or install the progressive web app (PWA) to use the percentage calculator anytime, even without an internet connection.