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    1. Home
    2. Tools
    3. Finance Tools
    4. Percentage Calculator
    Financial Tools

    Percentage Calculator

    Calculate percentages for any scenario.

    Percentage Calculator tool illustration

    Percentage Calculator

    Select a calculation type to get started.

    Percentage Change

    toover

    Common Percentage Uses

    Percentages are used in many everyday situations—discounts, marks, interest rates, and more.

    How to use this tool

    1. 1

      Select

      the calculation type from Operation.

    2. 2

      Enter

      the values (e.g., 20% of 150).

    3. 3

      View

      the calculated result instantly.

    Tips for better results

    • Discount calculation

      original price minus discount%.

    • Percentage change

      (new - old) / old × 100.

    • Marks percentage

      marks obtained / total marks × 100.

    • Reverse GST

      remove tax from inclusive price.

    Mastering Percentages for Everyday Life

    Percentages are a fundamental part of our daily lives, from calculating a discount at a store to understanding statistics in the news. Our versatile Percentage Calculator is designed to handle the most common percentage problems with ease and accuracy.

    Common Percentage Calculations You Can Perform

    • Calculate Exam Marks: Quickly find your percentage by entering the marks you obtained and the total marks possible.
    • Find a Percentage of a Number: Quickly answer questions like "What is 15% of 200?". Perfect for calculating tips or commissions.
    • Solve "X is what percent of Y?": Easily figure out what percentage one number represents of another, such as "30 is what percent of 150?".
    • Calculate Percentage Change: Determine the percentage increase or decrease from one value to another, ideal for tracking sales growth, investment performance, or price changes.
    • Add or Subtract a Percentage: A powerful feature for calculating final prices with Goods and Services Tax (GST) included, or figuring out the sale price after a discount.

    Frequently Asked Questions (FAQs)

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    Why Choose CodingMantra for Your Digital Needs?

    Privacy-First Architecture

    Browser utilities process data locally. When you choose to save a logo or document to your account, it is stored for reuse. AI tools send the inputs needed to generate your results.

    Advanced AI Integration

    We leverage the latest generative AI models (including Gemini and OpenRouter) to provide state-of-the-art capabilities like product photography generation, virtual try-ons, and high-converting marketing copy.

    Developer-Centric Utilities

    Built by developers for developers, our productivity suite includes essential utilities for JSON formatting, Regex testing, and security key generation, all optimized for a fast and seamless workflow.

    Tools for everyday work

    We believe in democratizing high-end technology. CodingMantra provides browser utilities and credit-based AI tools, helping small businesses and independent creators compete with larger enterprises.