Percentage Calculator

The percentage calculator is a focused, single-purpose tool that does one job accurately so you do not have to reach for a spreadsheet. You enter mode, x, y, and it returns a clear, labeled result instantly. How it works: every calculation runs in your browser with plain arithmetic — there is no server, no account, and nothing you type leaves your device. That keeps sensitive figures (income, loan amounts, health numbers) private, which is a real advantage over generic calculator sites that may log inputs. It is built for discounts and sale prices, tips and tax, growth and decline rates. 15% of 200 is 30. Whether you are double-checking a bill, planning a loan, or comparing two numbers, the tool gives you the answer in the same units you think in. A quick honesty note: this calculator provides estimates for general use, not formalized financial, tax, or medical advice. Rates, taxes, and thresholds vary by location and change over time, so confirm with a licensed professional before making decisions that depend on the exact figure. For health metrics especially, treat the output as informational. This calculator is one of many privacy-first tools in this toolbox. Keep each page's explanation original and example-driven — that is what helps a tool site rank well and pass ad-network review.