Basic Percentage Calculator - What is X% of Y?

Basic Percentage
CALCULATOR

What is X% of Y?

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    Calculate the percentage value of a given number quickly and easily.

    How to Use

    • Enter the desired percentage (X) into the first input field.
    • Enter your main number (Y) into the second input field.
    • Optionally, check the "Round" box to round the result to two decimal places.
    • The calculated result is shown instantly as you type.
    • Click "Add to History" or press Enter to save your calculation.

    How It Works

    The Basic Percentage calculator uses this formula:

    Result=Percentage100×Number\text{Result} = \frac{\text{Percentage}}{100} \times \text{Number}

    For example, to find 15% of 200, the calculator computes:

    15100×200=0.15×200=30\frac{15}{100} \times 200 = 0.15 \times 200 = 30

    So the result is 30.

    Practical Uses

    • Finding sale discounts (e.g., 20% off an $80 product).
    • Calculating taxes (e.g., 8% tax on a $250 item).
    • Checking grades (e.g., 85% of total points).
    • Measuring nutritional intake (e.g., 40% daily value).
    • Determining tips at restaurants (e.g., 15% tip on a $60 bill).
    • Calculating interest (e.g., 5% annual interest on a $1000 investment).

    Need more percentage tools?

    Requirements and Important Information

    • No installation required – works directly in your browser.
    • Compatible with all modern browsers (Chrome, Firefox, Safari, Edge).
    • Calculations are performed locally – no data is sent to any server.
    • Your calculation history is stored only on your device.
      Each calculator stores up to 20 most recent calculations, automatically removing the oldest entries when this limit is reached.
    • Works offline after the initial page load.
    • Supports both desktop and mobile devices.
    • No account or login required.

    Helpful Calculator Features

    • Real-time calculations that update as you type.
    • Copy results to clipboard with a single click.
    • Calculation history that persists between sessions.
    • Option to round results for cleaner numbers.
    • Clear visual formulas to understand the math.
    • Mobile-friendly interface that works on all devices.
    • Dark mode support for comfortable viewing.
    • Keyboard shortcuts for faster calculations.

    Tips for Accurate Calculations

    • Double-check input numbers for accuracy.
    • Use decimal points for precision.
    • Calculations update instantly as you type.
    • When the Round checkbox is checked, numbers are rounded to 2 decimal places.