Scientific Calculator Online scientific calculator

Constants

• ans : the last calculated result
• PI : pi = 3.14159265...
• E : e = 2.71828182...
• LOG2E : log of e base 2
• LOG10E : log of e base 10
• LN2 : log of 2 base e
• LN10 : log of 10 base e
• SQRT2 : square root of 2
• SQRT1_2 : square root of 1/2

Functions

• abs(a) : the absolute value of a
• acos(a) : arc cosine of a
• asin(a) : arc sine of a
• atan(a) : arc tangent of a
• atan2(a,b) : arc tangent of a/b
• ceil(a) : integer closest to a and not less than a
• cos(a) : cosine of a
• exp(a) : exponent of a
• floor(a) : integer closest to and not greater than a
• log(a) : log of a base e
• max(a,b) : the maximum of a and b
• min(a,b) : the minimum of a and b
• pow(a,b) : a to the power b
• random() : pseudorandom number in the range 0 to 1
• round(a) : integer closest to a
• sin(a) : sine of a
• sqrt(a) : square root of a
• tan(a) : tangent of a

Examples

Some simple expressions:

• 2³ = pow(2,3) = 8
• log(3) = 1.099
• 2 * (3 + 2) = 10

A more complicated formula for calculating the pressure drop in compressed air pipe lines (using same values as the link)

• dp = 7.57 q^1.85 L 10⁴ / d⁵ p = 7.57 * pow(10,1.85) * 100e4 / (pow(52.501,5) * 7) = 0.19

Note that the expressions can be written in any editor and transferred to the calculator display by using "copy and paste".

Display

This calculator can handle input numbers in several different bases:

• Decimal (Base 10): Numbers that do not start with a zero like 15 or 3.14e15. Decimal numbers can contain digits 0-9, decimals, and scientific notation.
• Hexadecimal (Base 16): Integers that start with a zero x like 0x1a5. Hexadecimal numbers can contain digits 0-9 and a-f (or A-F) but no decimal or scientific notation.
• Octal (Base 8): Integers that start with a zero like 073. Octal numbers can contain digits 0-7 but no decimal or scientific notation.
• Binary (Base 2): Integers that start with a zero b like 0b101. Binary numbers can contain digits 0 and 1 but no decimal or scientific notation.

^ is a bitwise xor operation. To raise a number to a power use pow() function.