The Percentage Calculator on Fivtool.com is a fast and easy online tool that helps you solve all types of percentage-related problems in seconds. Whether you want to calculate percentage increase, decrease, percentage of a number, or compare values, this tool gives you instant and accurate results without any manual formulas.

It is especially useful for students, business users, shopkeepers, and anyone who needs quick percentage calculations in daily life. Just enter your values, and the tool will automatically do the math for you—saving time and reducing errors.

With a clean interface and instant results, the Percentage Calculator is designed to make calculations simple, clear, and efficient for everyone.

Percentage Calculator

Calculate percentages instantly with smart modes

Percentage (%)

Number

100

20% of 500 = 100

✨ Smart examples (click to fill)

How percentages work

📐 Show calculation steps

A percentage is a fraction of 100. Our calculator supports three core scenarios: finding a percent of a number, increasing/decreasing a value by a percent, and finding the percentage ratio between two numbers.

Click 'Calculate' or pick an example to see step-by-step reasoning.

❓ Frequently Asked Questions

What is a percentage calculator used for? ▼

It simplifies percent-based problems: discounts, tip, interest rates, growth rates, and data comparisons.

How do I calculate a percentage increase? ▼

Use "Increase / Decrease" mode: enter original value and percentage (positive for increase, negative for decrease). The result shows new value.

Can I use negative percentages? ▼

Absolutely! In Increase/Decrease mode, negative values represent a decrease. In other modes, only positive percentages are recommended.

Is my data stored? ▼

No, everything runs locally in your browser. No tracking, no storage — pure speed & privacy.

Percentage Calculator

✨ Smart examples (click to fill)

How percentages work

❓ Frequently Asked Questions

Simplify your calculations with Fivtool