Percent Increase Calculator
Free percent increase calculator. Find what a number becomes after a percentage increase. Calculate salary raises, price increases, and growth rates instantly.
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Understanding results
The calculator displays:
- New Value: The final amount after applying the percentage increase
- Increase Amount: How much was added to the original value
- Original Value: Your starting number for reference
These results help you understand both the absolute and relative change in value.
Purpose
The percent increase calculator helps you quickly determine the new value after applying a percentage increase to an original number. Whether you're calculating a salary raise, price markup, investment growth, or any other percentage-based increase, this tool provides instant, accurate results.
Percent increase calculations are essential in business, finance, and everyday life. From understanding how much your paycheck will grow after a raise to calculating the new price after inflation, this calculator simplifies the math and shows you the step-by-step breakdown.
How to use
Using the percent increase calculator is simple:
- Enter the Original Value: Input the starting number (e.g., your current salary, the original price, or any base value).
- Enter the Percentage Increase: Input the percentage you want to increase by (e.g., 10 for a 10% increase).
- View Results: The calculator instantly shows the new value after the increase, along with the increase amount.
Examples
Example 1: Salary Raise
Your current salary is $65,000 and you receive a 7% raise.
- New Salary = $65,000 × 1.07 = $69,550
- You'll earn $4,550 more per year.
Example 2: Price Increase
A product costs $49.99 and the price increases by 12%.
- New Price = $49.99 × 1.12 = $55.99
Example 3: Investment Growth
Your investment of $10,000 grows by 8.5% this year.
- New Value = $10,000 × 1.085 = $10,850
- Your gain is $850.
How it works
Formula: New Value = Original Value × (1 + Percentage ÷ 100)
The formula works by converting the percentage to a decimal (dividing by 100), adding 1 to represent the original value plus the increase, then multiplying by the original value.
Example: $100 increased by 25%
- Convert: 25% = 0.25
- Add 1: 1 + 0.25 = 1.25
- Multiply: $100 × 1.25 = $125
FAQ
How do I calculate percent increase?
To calculate percent increase: multiply the original value by (1 + percentage/100). For example, $100 increased by 20% = $100 × 1.20 = $120.
What is the formula for percentage increase?
The formula is: New Value = Original Value × (1 + Percentage ÷ 100). Alternatively: New Value = Original Value + (Original Value × Percentage ÷ 100).
How do I calculate a 15% increase?
To calculate a 15% increase, multiply your original value by 1.15. For example, $200 with a 15% increase = $200 × 1.15 = $230.
What is the difference between percent increase and percentage points?
Percent increase is a relative change (e.g., going from $100 to $120 is a 20% increase). Percentage points measure the absolute difference between two percentages (e.g., interest rate going from 5% to 7% is a 2 percentage point increase, but a 40% relative increase).
How do I calculate my new salary after a raise?
Enter your current salary as the original value and the raise percentage. For example, if you earn $50,000 and get a 5% raise, your new salary is $50,000 × 1.05 = $52,500.
Methodology
The percent increase formula is straightforward:
New Value = Original Value × (1 + Percentage/100)
Or equivalently:
Increase Amount = Original Value × (Percentage/100)
New Value = Original Value + Increase Amount
Example Calculation
If your salary is $50,000 and you receive a 5% raise:
- Increase Amount = $50,000 × (5/100) = $2,500
- New Salary = $50,000 + $2,500 = $52,500
Validation & Accuracy
Tested: Verified against Excel, Google Sheets, and scientific calculators with 100+ test cases.
Accuracy: Results are mathematically exact, rounded to 2 decimal places for display.
Sources
The methodology is based on standard mathematical principles for percentage calculations, consistent with financial and business applications worldwide.