Free Online Calculator
Basic & scientific math · EMI · units · percentage & tip — free, no signup.
Recent calculations
- No calculations yet. Use the calculator above.
Calculations never leave your browser
Calculate in Three Steps
Enter a number
Tap the keypad or type digits on your keyboard. Decimals and negative values are supported.
Choose an operation
Select +, −, ×, or ÷, then enter the next number. Chain operations for multi-step math.
Get your result
Press = or Enter. Copy the answer, clear history, or keep calculating right away.
100% Private
Every calculation runs in your browser. Nothing is uploaded or stored on our servers.
Instant Results
Click or type — get answers immediately with no loading delays or accounts.
Works Everywhere
Desktop, tablet, or phone — any modern browser. No app to install.
Calculator Frequently Asked Questions
Is the Site95 online calculator free?
Yes. Our free online calculator is 100% free with no signup, no ads blocking the keypad, and no usage limits.
Do calculations leave my device?
No. Every calculation runs in your browser with JavaScript. We never receive your numbers or results.
Can I use a keyboard with this calculator?
Yes. Type digits and operators (+, -, *, /), press Enter for equals, Escape or C to clear, and Backspace to delete.
What math operations are supported?
The basic calculator covers addition, subtraction, multiplication, division, percent, and decimals. The advanced calculator adds trig, logs, powers, roots, factorial, π, e, memory, and DEG/RAD mode.
Is there a scientific / advanced calculator?
Yes. Open the free advanced calculator for sin, cos, tan, log, ln, xʸ, roots, factorial, and more — all private in your browser.
Does the calculator work on mobile?
Yes. EMI, unit converter, percentage, basic, and advanced calculators are mobile-friendly in modern browsers.
Do I need to download or install anything?
No. Open the page and start calculating. No app store, no extension, no account.
Is there a free unit converter?
Yes. Free unit converter online for km to miles, kg to lbs, Celsius to Fahrenheit, MB to GB, and more.
Is there a free percentage or tip calculator?
Yes. Free percentage calculator plus tip calculator and discount calculator with bill split and sale price.
Is there a free EMI calculator?
Yes. Free EMI calculator / loan EMI calculator for home loan, car loan, and personal loan monthly EMI, interest, and schedule.
Why Use a Free Online Calculator on Site95?
Site95 provides a reliable free online calculator for everyday arithmetic. Whether you need a quick total, a division for splitting a bill, or simple product math for school or work, this web calculator is ready in one click — no software install and no account.
Unlike apps that require downloads or cloud tools that may log activity, our calculator processes everything locally in your browser. Use it as often as you like for homework, shopping, freelancing estimates, or general math checks.
What you can calculate
The basic calculator supports the four core operations — addition, subtraction, multiplication, and division — plus percent, sign toggle (±), and decimal numbers. Need more power? The advanced calculator adds trigonometry, logarithms, powers, roots, factorial, constants π and e, memory keys, and DEG/RAD mode. Both tools keep a short history of recent results. Need a free EMI calculator for home loan or personal loan EMI? Open the EMI calculator. Convert km to miles or kg to lbs with the unit converter. Use the percentage calculator for percent of a number, tip calculator, or discount.
Keyboard shortcuts for faster math
Power users can type numbers and operators directly: +, -, *, /, Enter or = for the result, Escape or C to clear, and Backspace to delete. Combined with the on-screen keypad, the tool works well on both desktop and mobile.
Private by design
Privacy matters for everyday tools. Because calculation logic runs only in your browser, Site95 cannot see the numbers you enter. That makes this calculator a practical choice when you want a simple, trustworthy math tool without creating an account.
More free Site95 tools
Need more than a calculator? Explore our free PDF tools to merge, compress, and split PDFs, or use the word counter to count words and characters online.