Insert and calculate simple math equations in OneNote
Applies To
OneNote for Microsoft 365 OneNote 2024 OneNote 2021 OneNote 2016You don’t need a calculator to find the answers to simple math problems. You can jot down math equations during a meeting, conference or class, and OneNote can instantly calculate the results for you.

Type the equation you want to calculate. For example, type 95+83+416 to calculate the sum of the numbers 95, 83, and 416, or SQRT(15) to calculate the square root of 15.

After the equation, without typing a space, type an equal sign (=), and then press Spacebar. The answer will appear after the equal sign.
Tips:

Don’t use spaces in the equation. Type the numbers, operators, and functions as one single, continuous string of text.

Function codes are not casesensitive. For example, SQRT(3)=, sqrt(3)= or Sqrt(3)= will calculate the same answer.

To create a new line after the answer, press Enter (instead of Spacebar) after the equal sign.

If you want only the answer in your notes, after it’s calculated, you can delete the equation that precedes it. The answer will stay in your notes.
Examples of simple calculations
Below are a few examples of mathematical expressions that OneNote can calculate.

The average monthly sales of a product. For example, if the total revenue per year is $215,000, type $215,000/12= and then press Spacebar.

Total cost of monthly payments. For example, type 48*$129.99= and then press Spacebar to calculate the cost of 48 monthly payments at $129.99 a payment.

The sine of a 30degree angle. For example, type sin(30)= and then press Spacebar.

More complete math equations. For example, Type (6+7) / (4*sqrt(3))= and then press Spacebar to calculate the answer to (6+7) divided by (4 times the square root of 3).
Supported arithmetic operators
You can use the following operators in your equations.
Operator 
Meaning 
Example 
+ (plus sign) 
Addition 
3+3 
 (minus sign) 
Subtraction Negation 
31 1 
* (asterisk) 
Multiplication 
3*3 
X (upper or lowercase) 
Multiplication 
3x3 
/ (forward slash) 
Division 
3/3 
% (percent sign) 
Percent 
20% 
^ (caret) 
Exponentiation 
3^2 
! (exclamation) 
Factorial computation 
5! 
Supported math and trigonometry functions
You can use the math and trigonometry functions in the following table for your equations.
Note: To calculate a function, type its code (for example, SQRT for square root), and immediately follow it with the number, angle, or variables in parentheses, as shown in the Syntax column.
Function 
Description 
Syntax 
ABS 
Returns the absolute value of a number 
ABS(number) 
ACOS 
Returns the arccosine of a number 
ACOS(number) 
ASIN 
Returns the arcsine of a number 
ASIN(number) 
ATAN 
Returns the arctangent of a number 
ATAN(number) 
COS 
Returns the cosine of a number 
COS(number) 
DEG 
Converts an angle (in radians) to degrees 
DEG(angle) 
LN 
Returns the natural logarithm of a number 
LN(number) 
LOG 
Returns the natural logarithm of a number 
LOG(number) 
LOG2 
Returns the base2 logarithm of a number 
LOG2(number) 
LOG10 
Returns the base10 logarithm of a number 
LOG10(number) 
MOD 
Returns the remainder of a division operation 
(number)MOD(number) 
PI 
Returns the value of π as a constant 
PI 
PHI 
Returns the value of Φ (the golden ratio) 
PHI 
PMT 
Calculates a loan payment based on a constant interest rate, a constant number of payments, and the present value of the total amount 
PMT(rate;nper;pv) 
RAD 
Converts an angle (in degrees) to radians 
RAD(angle) 
SIN 
Returns the sine of the given angle 
SIN(angle) 
SQRT 
Returns a positive square root 
SQRT(number) 
TAN 
Returns the tangent of a number 
TAN(number) 