Everyday math
Scientific calculator
Trig, logs, roots, powers, and variables, with degrees or radians. Results update as you type.
How to use
Type, and the result follows
Type an expression and the result appears on the same line. Press Enter, or the equals key, to start another line. Backspace on an empty line removes it. Powers use ^, and a fraction stacks while you type. The square root, log, and trig keys drop the cursor inside the parentheses. For a log with a chosen base, use log base n and edit the small 2, or type log(8, 2).
Questions
How do I switch between degrees and radians?
Use Deg or Rad above the keypad. That setting changes sine, cosine, tangent, and their inverses. Hyperbolic functions stay the same.
How do variables and ans work?
Type a=5 on one line, then use a on a later line. ans is the most recent numeric result above the line you are editing.
What does Undefined mean?
The expression has no real number result. Dividing by zero, the square root of a negative number, and tangent of 90 degrees all show Undefined.
Can I type on a phone?
Yes. The on-screen keypad is there by default. Tap Keyboard if you want your phone's own keyboard instead.