Percentage Calculator — Calculate Percentages Instantly
Calculate percentages quickly. Find what percentage a number is, calculate percentage change or find X% of Y.
Percentage Calculator
About Percentage Calculator
Percentage Calculator is a completely free online tool from FastTools that helps you get work done faster — no software to install, no account required, and no watermarks on your output. All processing runs securely in your browser, so your files never leave your device.
Key Features
Three calculation modes: X% of Y, percentage change, what percent X is of Y
Real-time calculation as you type
Useful for marks, discounts, profit/loss and tax
Simple and intuitive interface
Free with no limits
Why Use Percentage Calculator?
In today's fast-paced digital world, having access to reliable, free online tools is essential. Percentage Calculator saves you time and money by providing professional-grade functionality directly in your browser. Whether you're a student, freelancer, small business owner, or enterprise professional, this tool is built to make your workflow faster and more efficient.
Unlike desktop software that requires installation and often comes with subscription fees, Percentage Calculator is completely free and works on any device — desktop, tablet, or mobile. There's no learning curve, no sign-up process, and no limitations on how many times you can use it.
Privacy & Security
Your privacy is our top priority. All processing happens directly in your browser — files are never uploaded to our servers, never stored, and never shared with third parties. Once you close your browser tab, there is no trace of your data anywhere. This makes FastTools one of the safest online tools available.