Type your expression directly onto the input line or copy and paste an expression from another programs. When you finish entering your expression, pres ENTER or click [=] button.
Rules for typing expression
In trigonometric calculations, angles are interpreted as radians (default) or degrees, depending on mode setting (Deg or Rad mode).
Results can be rounded to a user-specified number of decimal places (max 15-digit). This calculator can round mantissa under scientific notation, also. For example, numbers rounded to a 4 digit like this: decimal number 3.5269, integer number 35269.0000 and scientific number 3.5269 e-31.
To perform basic mathematical operations use the following arithmetic operators: addition (+), subtraction / minus sign (-), multiplication (*) and division (/)
Enter a positive number by pressing the appropriate digit keys (or buttons) and, if necessary, the decimal point key [.]. Period and comas are equivalents as decimal separator in numbers (3,2 + 4.3 = 7.5).
Negative numbers are obtained by simple putting the minus sign (-) before the number.
Use standard calculator notation for scientific notation, for example 1e-5 is 0.00001; 1e+3 or 1e3 is 1000. Enter the mantissa as the positive or negative number, and then click [E] button or just type lower e and type exponent as the positive or negative number.
Operations with the same precedence are performed from left to right, with operations enclosed in parentheses performed first. If parentheses are nested, the operations enclosed in the innermost set of parentheses are performed first. All types of parentheses are correct, for example 25.3/(K3[Fe(CN)6]).
Clicking the Constants button expand of Scientific calculator for chemists you get access physical constants table. Click the button near constant that you want to insert into expression.
2+5-3.25 = 10.25
8+7+(42-16)*3 = 90
8+7+[(42-16)-7]*3 = 72
5*-7 = -35
7e-6/3e-9 = 2333.3333333333
H2SO4 = H*2+S+O*4 = 1.00794*2+32.066+15.9994*4 = 98.079