Kalkulator Persentase Online Gratis
Hitung persentase, perubahan persentase, dan berapa persen satu angka dari angka lain.
What is X% of Y?
What percent is X of Y?
Percentage increase / decrease from Old to New
Frequently Asked Questions
How do I calculate what percentage one number is of another?
Divide the part by the whole, then multiply by 100. For example, 25 out of 80 = (25 ÷ 80) × 100 = 31.25%. Use the "X is what % of Y?" mode to do this automatically.
How do I calculate a percentage increase or decrease?
Use the percentage change formula: ((New − Old) ÷ Old) × 100. A positive result is an increase; negative is a decrease. Select "Percentage change" mode and enter your two values.
Is there a limit to how large the numbers can be?
The calculator handles numbers up to 15 significant digits (JavaScript float precision). For numbers in the trillions or beyond, results may have minor rounding differences.
Can I calculate reverse percentage — find the original price before a discount?
Yes. Use the "X is what % of Y?" mode in reverse: if a price of $80 is 80% of original, enter 80 and 80% to find the original value was $100.
Are my calculations saved or sent to a server?
No data is sent anywhere. All calculations run entirely in your browser with no server calls.
Is the Kalkulator Persentase free to use?
Yes, the Kalkulator Persentase on Allio Tools is completely free with no sign-up or registration required. It works directly in your browser.
How does the Kalkulator Persentase work?
Hitung persentase, perubahan persentase, dan berapa persen satu angka dari angka lain. No data is sent to a server — everything runs locally in your browser for maximum privacy and speed.
Do I need to install anything to use the Kalkulator Persentase?
No installation needed. The Kalkulator Persentase runs entirely in your web browser on any device — desktop, tablet, or mobile.
Is my data safe when using the Kalkulator Persentase?
Completely safe. The Kalkulator Persentase processes everything locally in your browser. No input data, results, or usage information is ever transmitted to or stored on any server.
Does the Kalkulator Persentase work offline?
After the page loads for the first time, the Kalkulator Persentase works without an internet connection for all client-side processing. Tools that fetch live external data (such as DNS or network lookups) require an active connection.
How accurate are the Kalkulator Persentase results?
The Kalkulator Persentase uses standard, well-established mathematical formulas used by professionals worldwide — the same ones used by banks, financial advisors, and accounting software. Results are as accurate as the inputs you provide. See our <a href="/methodology/">Methodology page</a> for formula sources and references. For financial decisions, always verify with a qualified professional.
Can I share the Kalkulator Persentase results with someone?
Yes. Copy the result number or screenshot the page to share via message, email, or social media. You can also bookmark and share the tool URL directly — the Kalkulator Persentase opens instantly for anyone with a modern browser, no account needed.
Does the Kalkulator Persentase work on all browsers?
Yes. The Kalkulator Persentase is built with standard browser APIs and works on all modern browsers including Chrome, Firefox, Safari, and Edge — on both desktop and mobile. No plugins, extensions, or third-party software are required.
How do I save or export my results from the Kalkulator Persentase?
Select and copy the result text to paste into any document or app. For image tools, a Download button saves the file directly to your device. Your browser's built-in screenshot function also captures results quickly. No account or login is required.