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Gravity Forms Advanced Calculations

Perform advanced calculations with mathematical functions, conditionals, and a powerful formula editor.

What does it do?

Advanced Calculations completely revamps calculations in Gravity Forms. Not only does it empower you with advanced mathematical functions and conditionals, it improves the formula editing experience with a powerful new editor, complete with syntax highlighting, autocompletion, shorthand field references, and so much more!

With Advanced Calculations you can create:

  • Mortgage calculators
  • Advanced calculated products
  • Auto loan calculators
  • Investment/Retirement calculators
  • BMI calculators
  • And many more!

Features

  • Heaps of mathematical functions.
    Spreadsheet style math directly in your form.
  • Conditional statements.
    Specify multiple formulas in the same field; use the right one based on your conditions with support for numbers and strings.
  • Formula shorthand.
    Simplify your formulas with our field reference shorthand. No more cumbersome merge tags!
  • Syntax highlighting.
    Clarify your complex formulas and spot issues quickly with automatic syntax highlighting.
  • Secure, tamperproof calculations.
    All calculations are recalculated on submission for accuracy and security.
  • Seamless integration.
    Automatically enhances all calculation-enabled fields like Number and Calculated Product fields.
  • Automatic updates.
    Get updates and the latest features right in your dashboard.
  • Legendary support.
    We’re here to help! And we mean it.

Get Gravity Perks

This plugin is part of Gravity Perks, a suite of 47+ essential Gravity Forms addons with support you can count on.

Pricing
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Have a question?

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Ask the Wizards
Gravity Forms Certified Developer
  • Version 1.1.9
  • Updated December 9, 2024
  • Released March 28, 2022
View Changelog

All Connections

All Perks

Documentation

  1. How do I enable this functionality?
  2. Feature Details
    1. Merge Tag Shorthand
    2. Conditional Statements
      1. if/else
      2. if/elseif/else
      3. Supported Operators
      4. Comparing String Values
      5. Multiple Expressions
      6. Condition: Field Has Value
      7. Condition: Field Is Empty
      8. Condition: Field Values Match
    3. Syntax Highlighting
    4. Tooltips
    5. Functions
      1. Absolute Value – abs
        1. Sample Usage
        2. Syntax
        3. Example
      2. Arccosine – acos
        1. Sample Usage
        2. Syntax
        3. Example
      3. Arcsine – asin
        1. Sample Usage
        2. Syntax
        3. Example
      4. Arctangent – atan
        1. Sample Usage
        2. Syntax
        3. Example
      5. Average – average
        1. Sample Usage
        2. Syntax
        3. Example
      6. Ceiling – ceil
        1. Sample Usage
        2. Syntax
        3. Example
      7. Cosine – cos
        1. Sample Usage
        2. Syntax
        3. Example
      8. Exponential – exp
        1. Sample Usage
        2. Syntax
        3. Example
      9. Floor – floor
        1. Sample Usage
        2. Syntax
        3. Example
      10. Future Value – fv
        1. Sample Usage
        2. Syntax
        3. Example
      11. Natural Logarithm – ln
        1. Sample Usage
        2. Syntax
        3. Example
      12. Logarithm – log
        1. Sample Usage
        2. Syntax
        3. Example
      13. Maximum – max
        1. Sample Usage
        2. Syntax
        3. Example
      14. Minimum – min
        1. Sample Usage
        2. Syntax
        3. Example
      15. Pi – pi
        1. Sample Usage
        2. Syntax
        3. Example
      16. Round – round
        1. Sample Usage
        2. Syntax
        3. Example
      17. Sine – sin
        1. Sample Usage
        2. Syntax
        3. Example
      18. Square Root – sqrt
        1. Sample Usage
        2. Syntax
        3. Example
      19. Tangent – tan
        1. Sample Usage
        2. Syntax
        3. Example
  3. Known Limitations
  4. Integrations
    1. Invoicing Templates by Gravity PDF
  5. Translations
  6. FAQs
    1. How can I create a condition based on the label of a selected choice?
  7. Hooks
  8. Related Resources

How do I enable this functionality?

After installing and activating Gravity Forms Advanced Calculations,

Add a Number field to your form.
Check Enable Calculation.
Insert advanced calculations into form. Use the Formula Cheatsheet for a primer on calculations.

Feature Details

Merge Tag Shorthand

The true power of calculations with Gravity Forms comes from being able to reference other fields to create calculations from what users have entered. Gravity Forms uses merge tags to reference fields. Merge tags are referenced using the field ID, with or without the descriptor, such as {Field A:1} or {:1}.

Gravity Forms Advanced Calculations adds shorthand for fields to clean up your calculations and make it easier to keep track of everything. The shorthand for the same field shown above is written as F1.

Shorthand offers more readable calculations, especially for complicated functions.

Conditional Statements

Advanced Calculations supports conditional statements such as if/else and if/elseif/else. Use these statements to evaluate calculations based on field values.

if/else

if( F1 > 1.25 && F1 < 5.5 ):
	F1 * 50
else:
	0
endif;

if/elseif/else

if( F1 < 5.5 ):
	F1 * 50
elseif( F1 >= 10 ):
	F1 * 25
else:
	0
endif;

You may use as many elseif statements as needed. You are not limited to one.

Supported Operators

The following comparison operators are supported:

  • == Equal to
  • != Not equal to
  • > Greater than
  • < Less than
  • >= Greater than or equal to
  • <= Less than or equal to
Comparing String Values

Comparison values can be either a number or a string (e.g. 123 or hello world).

A few things to note when comparing strings:

  • Comparisons are case-sensitive. hello world won’t match Hello World.
  • Comparisons are not sensitive to whitespace at the beginning and end of strings. Strings are trimmed by Gravity Forms before comparison so a condition like this would match still match a value of hello (no whitespace). 
    if ( F1 == ' hello ' ):
  • Comparisons can be made with any any single-value text-based field type, including choice-based fields like Drop Down and Radio Button fields.
Multiple Expressions

Conditional statements support multiple expressions within a single condition via the the && (and) or the || (or) operators.

To require both expressions to be true for the condition to match, you would use the && operator. In this example, the condition will only be true if Field #1 is greater than 5 and less than 10.

if ( F1 > 5 && F1 < 10 ):

If you would like your condition to match if any of the conditions are true, you would use the || operator. In this example, the condition will return true if Field #1 is greater than 5 or if Field #2 is greater than 5.

if ( F1 > 5 || F2 > 5 ):

While these examples are simple, this functionality is quite robust and can handle conditions that contain expressions with both && and || operators.

Worth noting that string-based conditions can be combined with number-based conditions.

if ( F1 == 'Package A' && F2 > 100 ):

You can break complex conditionals onto multiple lines for readability.

Condition: Field Has Value

You can easily check if a field has a value like so:

if ( F1 ):

Condition: Field Is Empty

You can check if a field is empty (has no value) like so:

if ( F1 == '' ):

Condition: Field Values Match

You can check if the value of two different fields match like so:

if ( F1 == F2 ):

This works with both numeric and string values.

Syntax Highlighting

Advanced Calculations adds syntax highlighting and autocompletion to the calculation text area. Syntax highlighting drastically improves the readability of calculations, especially complicated ones that use conditional statements and functions.

Autocompletion aids you when inputting a function or conditional statement. When you start typing any supported function, the editor will suggest a completion. Click the suggested function (or hit return) to insert the full function with placeholder values.

The editor also automatically closes parentheses and merge tag braces. Say goodbye to invalid formulas because of an errant parenthesis!

Tooltips

When hovering over shorthand field variables and merge tag field variables with no descriptor in the formula editor, you will see a tooltip displaying the field’s label.

Functions

Advanced Calculations adds support for common functions to both save you time and effort and provide more accurate results.

Absolute Value – abs

Returns the absolute value of a number.

Show Details

Sample Usage

abs( -78 )
abs( F1 )

Syntax

abs( value )

  • value – The value or field of which to return the absolute value.
Example

In the below example, the retuned value is 14.

abs( -14 )

Arccosine – acos

acos returns the arccosine of a number in radians.

Show Details

Sample Usage

acos( 1 )
acos( F2 )

Syntax

acos( value )

  • value – The value for which to return the arccosine.
Example

In the below example, the retuned value is 0.

acos( 1 )

Arcsine – asin

asin returns the arcsine of a number in radians.

Show Details

Sample Usage

asin( 1 )
asin( F2 )

Syntax

asin( value )

  • value – The value for which to return the arcsine.
Example

In the below example, the retuned value is 1.5707963267948966.

asin( 1 )

Arctangent – atan

atan returns the arctangent of a given number in radians.

Show Details

Sample Usage

atan( 1 )
atan( F2 )

Syntax

atan( value )

  • value – The value for which the arctangent should be returned.
Example

In the below example, the retuned value is 0.7853981633974483.

atan( 1 )

Average – average

Returns the average value of the arguments given.

Show Details

Sample Usage

average( F1, F2, 26 )
average( 1, 2, 3, 4, F1 )

Syntax

average( value1, [value2, ...] )

  • value1 – The first value or field to evaluate when calculating the average value.
  • value2, ... (optional) – Additional values or fields to evaluate when calculating the average value.
Example

In the below example, the returned value is 35.

average( 12, 58, 35 )

Ceiling – ceil

Rounds a number up to the next largest integer.

Show Details

Sample Usage

ceil( 25.4 )
ceil( F1 )

Syntax

ceil( value )

  • value – The value to round up to the nearest integer.
Example

In the below example, the retuned value is 36.

ceil( 35.8 )

Cosine – cos

cos returns a value between -1 and 1 representing the cosine of the given angle in radians.

Show Details

Sample Usage

cos( 1 )
cos( F2 )

Syntax

cos( value )

  • value – The value for which to return the cosine.
Example

In the below example, the retuned value is 0.5403023058681398.

cos( 1 )

Exponential – exp

Returns e^x, where e is Euler’s number (~2.718) and x is the provided value.

Show Details

Sample Usage

exp( 25.4 )
exp( F1 )

Syntax

exp( value )

  • value – The exponent to raise e to.
Example

In the below example, the retuned value is 148.4131591025766.

exp( 5 )

Floor – floor

Rounds a number down to the nearest integer.

Show Details

Sample Usage

floor( 75.763 )
floor( F3 )

Syntax

floor( value )

  • value – The value to round down to the nearest integer.
Example

In the below example, the retuned value is 323.

floor( 323.78 )

Future Value – fv

fv calculates the future value of an investment based on constant-amount periodic payments and a constant interest rate.

Show Details

Sample Usage

fv( F1, F2/12, F3, 10000, 1 )
fv( 0.05, 10, F1, F2 )

Syntax

fv( rate, numberOfPeriods, paymentAmount, presentValue, [endOrBeginning] )

  • rate – The annualized rate of interest.
  • numberOfPeriods – The number of payments to be made.
  • paymentAmount – The amount per period to be paid.
  • presentValue – The current value of the investment.
  • [endOrBeginning] – (optional – 0 by default) – Whether payments are due at the end (0) or beginning (1) of each period.

Units must be consistent for rate, number_of_periods, and payment_amount. For example, on a 60 month car loan this is paid monthly, the rate should be divided by 12 and the numberOfPeriods is 60. If the same loan was instead paid quarterly, the rate should be divided by 4 and the numberOfPeriods is 20.

Example

In the below example, the retuned value is 0.023.

fv( 0.0311, 60, 450, -25000, 0 )

By default fv calculates a loan. To use it to calculate a growing investment, add a minus before the formula. For example:

-( fv( 0.08, 5, 300, 2500 ) )

Natural Logarithm – ln

ln returns the logarithm of a number, base e. e is Euler’s number (~2.718).

Show Details

Sample Usage

ln( 23 )
ln( F4 )

Syntax

ln( value )

  • value – The value to calculate the logarithm, base e. value must be positive.
Example

In the below example, the retuned value is 6.19644412779452.

ln( 491 )

Logarithm – log

log returns the logarithm of a number, base 10.

Show Details

Sample Usage

log( 7 )
log( F2 )

Syntax

log( value )

  • value – The value to calculate the logarithm, base 10. value must be positive.
Example

In the below example, the retuned value is 1.6901960800285136.

log( 49 )

Maximum – max

max returns the largest value in the list of arguments.

Show Details

Sample Usage

max( F1, F4, 67 )
max( 108, F7 )

Syntax

max( value1, [value2, ...] )

  • value – The first value or field to evaluate when calculating the maximum value.
  • [value2, ...] – (optional) – Additional values or fields to evaluate when calculating the maximum value.
Example

In the below example, the retuned value is 49.

max( 36, 49 )

Minimum – min

min returns the smallest value in the list of arguments.

Show Details

Sample Usage

min( F3, 56, F8 )
min( 3, F1 )

Syntax

min( value1, [value2, ...] )

  • value – The first value or field to evaluate when calculating the minimum value.
  • [value2, ...] – (optional) – Additional values or fields to evaluate when calculating the minimum value.
Example

In the below example, the retuned value is 6.

min( 18, 6 )

Pi – pi

pi returns the value of pi to 20 decimal places.

Show Details

Sample Usage

pi()

Syntax

pi()

Example

In the below example, the retuned value is 3.14159265358979323846.

pi()

Round – round

round rounds a number to the nearest integer.

Show Details

Sample Usage

round( 12.7 )
round( F2 )

Syntax

round( value )

  • value – The value to round to the nearest integer.
Example

In the below example, the retuned value is 9.

round( 8.68 )

Sine – sin

sin returns a number between -1 and 1 which represents the sine of the given angle in radians.

Show Details

Sample Usage

sin( 1 )
round( F2 )

Syntax

sin( value )

  • value – The value for which to return the sine.
Example

In the below example, the retuned value is 0.8414709848078965.

sin( 1 )

Square Root – sqrt

sqrt returns the square root of a number.

Show Details

Sample Usage

sqrt( F12 )
sqrt( 72 )

Syntax

sqrt( value )

  • value – The number to calculate the square root.
Example

In the below example, the retuned value is 12.

sqrt( 144 )

Tangent – tan

tan returns a numeric value that represents the tangent of the given angle.

Show Details

Sample Usage

tan( 1 )
tan( F2 )

Syntax

tan( value )

  • value – The value for which to return the tangent.
Example

In the below example, the retuned value is 1.5574077246549023.

tan( 1 )

Known Limitations

  • Single and double quotes cannot be escaped in string-based conditions.

    • Solution: Wrap the string in double quotes if it contains a single quote or single quotes if it contains double quotes.

      Example: 'Don't try to escape.' becomes "Don't try to escape."

  • When targeting top-level Checkbox fields and Paragraph Text fields in conditional statements, you must use shorthand syntax as Gravity Forms does not listen for these fields in calculations by default.

  • List fields are not supported in calculations.

  • Nested conditional statements are not supported.

    • Solution: Combine the nested conditions into multiple if/elseif/else statements. Here’s an example where we take an unsupported nested conditional statement and convert it into supported if/elseif/else statements.

      Unsupported: 

      if( F1 > 10 ):
	if( F2 > 20 ):
		2
	else:
		1
	endif;
else:
	0
endif;

      Supported: 

      if( F1 > 10 && F2 > 20 ):
	2
elseif( F1 > 10 && F2 <= 20 ):
	1
else:
	0
endif;

Integrations

Invoicing Templates by Gravity PDF

GP Advanced Calculations integrates with Gravity PDF’s Invoicing 2.0+ templates. These templates allow for business-ready invoice generation from Gravity Forms submissions. They’re highly customizable, translatable, support conditional logic, and are GST/VAT compatible. This integration allows for GP Advanced Calculations’ mathematical functions and formulas to be leveraged while working with Gravity PDF’s Invoicing templates.

There’s a variety of sleek templates to choose from and all templates integrate with GP eCommerce Fields, GP Inventory, GP Conditional Pricing, GP Unique ID, and GP Price Range. Learn more about Gravity PDF’s invoicing templates here.

Translations

You can use the free Loco Translate plugin to create translations for any of our Perks. If you’ve never used Loco translate before, here’s a tutorial written for beginners.

FAQs

How can I create a condition based on the label of a selected choice?

Use the :choice_label merge tag modifier to explicitly get the label from a choice in a formula. (There is also the :label modifier, but it returns the label of the field rather than the selected choice.)

Example:

if ( {Package:1:choice_label} == 'Premium' ) :
	{Options:2} * 0.5
else:
	{Options:2} * 0.1
endif;

Hooks

Gravity Forms has hundreds of hooks. Check out our Gravity Forms Hook Reference for the most thorough guide to Gravity Forms’ many actions and filters.

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