The ultimate math tool for digital marketers, students, and professionals. Calculate ROI, discounts, percent change, and growth rates instantly.
Percentages are a fundamental part of our daily lives and business operations. Whether you are a digital marketer calculating ad spend ROI, a student working on math assignments, or simply trying to figure out a tip at a restaurant, accuracy is key. The Digital Daptos Free Percentage Calculator is designed to simplify these calculations, allowing you to solve complex math problems instantly without memorizing formulas.
Enter the percentage and the number to find the value. (e.g., "What is 20% of 150?" returns 30).
Enter two numbers to see what percent one is of the other. (e.g., "25 is what % of 100?" returns 25%).
Ideal for marketers. Enter an old value and a new value to see the increase or decrease percentage (Growth Rate).
Perfect for forecasting. Calculate future values by adding or subtracting a specific percentage growth or churn.
This versatile tool is used by professionals and students across various fields:
Calculate CTR, Conversion Rates, ROI, and ROAS instantly for your campaigns.
Calculate discounts, sales tax, profit margins, and final pricing during sales.
Determine interest rates, loan payments, tax calculations, and investment returns.
Students and teachers use it to calculate test scores, grade weights, and statistical data.
(Percent ÷ 100) × Number
Example: 20% of 50 = (20/100) * 50 = 10
((New - Old) ÷ Old) × 100
Example: 10 to 15 is a 50% increase.
| Scenario | Calculator to Use |
|---|---|
| Marketing Growth Analysis | Use "Percentage Change" to see how much your traffic grew month-over-month. |
| Shopping Sales | Use "Decrease Number" to calculate the final price after a 20% discount. |
| Tax Calculation | Use "Increase Number" to add sales tax (e.g., 8%) to a base price. |
| Grades/Scores | Use "What Percentage" to see what 45 out of 60 equals in percentage. |
From tips to taxes, get the numbers right.
Never guess the final price of a sale item again. Enter the original tag price and the discount percentage to see exactly how much you'll pay at the register.
Know the deal before you buy.
To calculate a 20% tip on a $50 bill, multiply 50 by 0.20 to get $10. The total would be $60. Our tool does this automatically in the "Tip Calculator" section.
Subtract the original value from the new value, divide that difference by the original value, and multiply by 100.
Yes, simply use the "Decrease Number" calculator. Enter the starting number and the percentage you want to subtract to find the reduced value.
Yes, all calculations happen instantly in your browser using JavaScript. No data is sent to our servers, ensuring speed and privacy.
Percentages help marketers measure performance. You use them to calculate Click-Through Rates (CTR), Conversion Rates, ROI, and Year-over-Year growth, making data comparable and actionable.
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