TetraKits
Perform scientific calculations in your browser — trigonometry, logarithms, exponents, roots, factorials, and constants. Use the on-screen keypad or keyboard, with calculation history for multi-step problems. The TetraKits Scientific Calculator runs entirely in your browser — free, private, and ready on mobile or desktop.
Overview
Engineering homework, lab unit conversions, and quick trig checks should not require downloading a desktop app. A browser scientific calculator with DEG/RAD toggle, history, and keyboard input covers most advanced arithmetic.
How to use the scientific calculator
- Choose angle mode — Toggle DEG (degrees) or RAD (radians) for trigonometry functions — sin, cos, tan.
- Enter your expression — Click buttons or type on keyboard. Use parentheses, powers (x^y), sqrt, log, ln, and constants π and e.
- Read result and history — Press equals for the answer. Review prior calculations in history. For fractions, try the fraction calculator.
Common use cases
- Choose angle mode: Toggle DEG (degrees) or RAD (radians) for trigonometry functions — sin, cos, tan.
- Enter your expression: Click buttons or type on keyboard.
- Read result and history: Press equals for the answer.
- Bookmark for quick access: Save the tool for repeat tasks without installing an app.
Frequently asked questions
Does the calculator support keyboard input?
Yes. Type digits, operators, parentheses, and Enter for equals. Standard calculator keyboard shortcuts work.
What is the difference between DEG and RAD?
DEG computes trig functions in degrees (360° circle). RAD uses radians (2π circle). Ensure mode matches your problem.
Can I calculate logarithms and exponents?
Yes. log (base 10), ln (natural log), 10^x, e^x, and x^y are available on the keypad.
Is there calculation history?
Yes. Previous expressions and results appear in the history panel for reference.
Is this scientific calculator free?
Yes. Unlimited calculations with no signup; runs entirely in your browser.
