With the Contact Form 7 Cost Calculator, you can create dynamic and interactive forms that provide users with instant cost calculations or estimates. This is particularly useful for businesses or websites that offer products or services with variable pricing based on user selections or quantities.

Here are some key features and capabilities typically offered by the Contact Form 7 Cost Calculator:

1. Calculation Fields: This extension introduces calculation fields into your Contact Form 7 forms. You can define these fields and specify mathematical formulas or expressions using variables and operators.
2. Variable Inputs: Users can input values into the form, such as quantities, dimensions, or other parameters that affect the final cost calculation.
3. Conditional Logic: The plugin allows you to incorporate conditional logic into the calculations. This means that you can set up different calculations based on specific conditions or user choices.
4. Dynamic Updates: As users make changes or update input values, the cost calculation is automatically updated in real-time, providing instant feedback.
5. Customizable Output: You can customize the display and formatting of the calculated cost or estimate. This might include adding currency symbols, decimal places, or any additional text.
6. Integration with Contact Form 7: The extension seamlessly integrates with the Contact Form 7 plugin, allowing you to leverage its form-building capabilities while adding cost calculation functionality.

Installation and settings plugin

1. Require Contact Form 7
2. Installation
3. New form
4. Date
5. Use cases
6. Supported symbols
7. Age Calculator

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Require Contact Form 7 – top

1. Download: https://wordpress.org/plugins/contact-form-7/

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Installation – top

1. Upload the add-to-any directory to the /wp-content/plugins/ directory.

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New form – top

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Date – top

				name-date-1  - name-date-2
			

• name-date-1= 2018/12/20
• name-date-2= 2018/12/18
• Result = 2

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Use cases – top

Input	Result	Explanation
2+3-1	4	Addition and Subtraction operator
2*5/10	1	Multiplication and Division operator
tan45 or tan(45)	1	Trigonometric Function ( tan in Degree mode)
tan45 or tan(45)	1.619775190543862	Trigonometric Function ( tan in Radian mode)
Pi1,15,n or Pi(1,15,n)	1307674368000	Product of Sequence
Sigma1,15,n or Sigma(1,15,n)	120	Sum of Sequence( also called summation)
2^3	8	Exponent( note this operator is left associative like MS Office)
5P3	60	Permutaion Method to calculate all the permutaions
sincostan90 or sin(cos(tan(90)))	0.017261434031253	Multiple functions with or without parenthesis (both works)



Supported symbols – top

Symbol	Explanation
+	Addition Operator eg. 2+3 results 5
–	Subtraction Operator eg. 2-3 results -1
/	Division operator eg 3/2 results 1.5
*	Multiplication Operator eg. 2*3 results 6
Mod	Modulus Operator eg. 3 Mod 2 results 1
(	Opening Parenthesis
)	Closing Parenthesis
Sigma	Summation eg. Sigma(1,100,n) results 5050
Pi	Product eg. Pi(1,10,n) results 3628800
n	Variable for Summation or Product
pi	Math constant pi returns 3.14
e	Math constant e returns 2.71
C	Combination operator eg. 4C2 returns 6
P	Permutation operator eg. 4P2 returns 12
!	factorial operator eg. 4! returns 24
log	logarithmic function with base 10 eg. log 1000 returns 3
ln	natural log function with base e eg. ln 2 returns .3010
pow	power function with two operator pow(2,3) returns 8
^	power operator eg. 2^3 returns 8
root	underroot function root 4 returns 2
sin	Sine function
cos	Cosine function
tan	Tangent function
asin	Inverse Sine funtion
acos	Inverse Cosine funtion
atan	Inverse Tangent funtion
sinh	Hyperbolic Sine funtion
cosh	Hyperbolic Cosine funtion
tanh	Hyperbolic Tangent funtion
asinh	Inverse Hyperbolic Sine funtion
acosh	Inverse Hyperbolic Cosine funtion
atanh	Inverse Hyperbolic Tangent funtion



Age calculator

Step 1: Add a date field with any name

Step 2: Calculate age

Add a Calculated field with the formula “age( date name )”

Eg:

birthday 
[date birhdaydate]
age
[calculated calculated-507 "age(birthdaydate)"]

[submit "Submit"]