📐 Math Grades 6–12

Scientific Calculator

Type an expression or tap the keys. It follows the order of operations, so check your answer the way your teacher expects.

Learn How it works

Order of operations (PEMDAS): Parentheses, Exponents, Multiplication and Division (left to right), Addition and Subtraction (left to right).
Degrees vs. radians: Geometry and most trig homework use degrees. Precalculus and calculus often use radians. Check the DEG/RAD button.
Negative numbers: −3² means −(3²) = −9. Type (−3)^2 to square negative three.
Keyboard: type directly, press Enter for =, Esc to clear. Use ^ for powers and ! for factorial.

Type	Result	Why
`2+3*4`	14	Multiply before adding
`(2+3)*4`	20	Parentheses first
`sin(30)` in DEG	0.5	sin 30° = ½
`sqrt(2)^2`	2	Square and square root undo each other
`log(1000)`	3	10³ = 1000
`5!`	120	5·4·3·2·1

Answer, then tap Check. You get an explanation either way.