Convert numbers to Roman numerals and back.
Calculate your exact age in years, months, and days.
Generate random numbers within a specific range.
Calculate accurate monthly payments, interest costs, and a complete amortization schedule for any type of loan.
Calculate the difference between two dates.
Convert between different units of measurement.
Our tools run in your browser, meaning your data is never sent to a server. It's the most private way to work!
Solve percentage problems in a snap. Whether you're calculating a discount, a tip, or a weird growth metric, this tool handles the math for you. Just enter the numbers and get the answer instantly.
Percentages are everywhere, but the formulas can be tricky to remember. This tool bundles the three most common percentage use cases into one simple interface, so you don't have to break out the scratch paper.
It applies standard algebraic formulas. For 'X% of Y', it's `(X/100) * Y`. For '% change', it's `((New - Old) / Old) * 100`.
Use the 'What is X% of Y' mode. For a 20% tip on a $50 bill, enter 20% of 50.
Yes, the tool supports precise decimal calculations.
For percentage change, a negative result simply means a decrease (e.g., -5% means a 5% drop).
All calculations and data processing for this tool are performed locally in your browser. UtilToolkits does not send any of your data to an external server, ensuring your information remains private and secure.
Increase of 25%