Online Calculator
A clean, modern calculator with basic and scientific modes, keyboard support and history — all private, all in your browser.
Basic and scientific in one
Use the Basic tab for everyday arithmetic, or switch to Scientific for trigonometry (sin, cos, tan and their inverses), logarithms (log and ln), powers, square roots, exponentials and constants like π and e. Switch between degrees and radians as needed.
Keyboard shortcuts
Type numbers and operators directly. Press Enter or = to calculate, Backspace to delete the last character, and Escape to clear everything.
Frequently asked questions
Is this a basic or scientific calculator?
Both. Switch tabs between Basic (everyday arithmetic) and Scientific (trigonometry, logarithms, powers, roots, constants and more).
Can I use my keyboard?
Yes. Type numbers and operators directly, press Enter or = to calculate, Backspace to delete and Escape to clear.
Does it keep a history?
Yes. Your recent calculations are listed below the keypad — tap any of them to reuse the result.
Degrees or radians?
In Scientific mode you can switch between DEG and RAD for trigonometric functions.
Is anything uploaded?
No. Every calculation runs in your browser and nothing is sent anywhere.