A scientific calculator without the clutter: trigonometry, logarithms, powers, roots, factorials and constants, in degrees or radians. Type with your keyboard or tap the keys, and every answer is kept in your history. It is free, with no ads and no sign-up.
How to use it
- Choose Degrees or Radians.
- Tap the keys or type your calculation with the keyboard.
- Press = or Enter for the answer.
- Use Ans to bring in your last answer, or click an answer in History to use it again.
- Press DEL to delete one character and AC to clear everything.
What it can do
Add, subtract, multiply and divide with proper order of operations, powers with ^, square roots, factorials, percentages, sine, cosine and tangent and their inverses, natural and base-10 logarithms, and the constants π and e. Ans uses your last answer.
Keyboard
Type calculations directly, such as 2^10, sqrt(2)*3 or sin(30). Press Enter for the answer and Escape to clear. Multiplication can be implied, so 2(3+4) and 2pi work too.
Degrees or radians
Switch between Degrees and Radians at the top of the calculator. School problems usually use degrees; calculus and physics often use radians. If sin(30) does not give 0.5, check which mode you are in.
Handy examples
sqrt(144)gives 12.- Taking the factorial of 5 gives 120.
log(1000)gives 3, andln(e)gives 1.sin(30)gives 0.5 in degrees mode.2^10gives 1024.
Other calculators
For plotting, try the graphing calculator. For working with steps, see integrals, derivatives and limits and the matrix calculator. The math notebook keeps your working in lines you can edit.
Questions
How do I find an inverse trig value?
Use the sin⁻¹, cos⁻¹ and tan⁻¹ keys. The answer is in degrees or radians, depending on your mode.
Does it follow the order of operations?
Yes. Brackets, powers, multiplication and division, then addition and subtraction.
Is my history saved?
Each answer is kept in the history while you use the page.