Ideal weight range template

Free build guide: Ideal weight range for WordPress

This guide rebuilds the Ideal weight range from this site in Gravity Forms: 5 inputs, 6 live results and no submit button. Expect about 33 minutes by hand. The template above is the same form as an import file, and the bundle adds a PDF version of this guide with a screenshot of every setting, plus the stylesheet.

You will end up with:

• Ideal weight (lb)
• Healthy range from (lb)
• Healthy range to (lb)
• Ideal weight (kg)
• Healthy range from (kg)
• Healthy range to (kg)

What you need

• Gravity Forms (any license) — Calculation fields, radio values and conditional logic are in core.

Everything here is core Gravity Forms. No add-ons.

1. Create the form

1. Go to Forms → New Form and name it Ideal weight range.
2. In Form Settings → Form Layout, set the CSS Class Name to fo-live-only. Step 3 uses it to hide the submit button.
3. Leave the form open in the editor; the fields come next.

2. Add the fields, in this order

Field IDs are assigned as you add fields. If yours come out differently, change the {Label:ID} references in the formulas to match your IDs. Settings not mentioned stay at their defaults.

1. Units · Radio Buttons · ID 1
Custom CSS Class (Appearance tab) fo-segmented.

Choices (tick show values and enter each value):

• ft / lb — value us (selected by default)
• cm / kg — value metric

2. Sex · Radio Buttons · ID 2
Custom CSS Class (Appearance tab) fo-segmented.

Choices (tick show values and enter each value):

• Male — value 50 (selected by default)
• Female — value 45.5

3. Height (ft) · Number · ID 3
Number Format 9,999.99; Default Value 5; Layout: half width, on the same row as its neighbour (drag the field beside it in the editor; no CSS class needed); Conditional Logic (Advanced tab): Show this field if Units is ft / lb..

4. Height (in) · Number · ID 4
Number Format 9,999.99; Default Value 9; Layout: half width, on the same row as its neighbour (drag the field beside it in the editor; no CSS class needed); Conditional Logic (Advanced tab): Show this field if Units is ft / lb..

5. Height (cm) · Number · ID 5
Number Format 9,999.99; Default Value 175; Conditional Logic (Advanced tab): Show this field if Units is cm / kg..

6. Ideal weight (lb) · Number · ID 6
Number Format 9,999.99; Description “Devine formula: a starting point, not a target. The healthy range below matters more.”; Custom CSS Class (Appearance tab) fo-result; tick Enable Calculation, Rounding 0; Conditional Logic (Advanced tab): Show this field if Units is ft / lb..

( {Sex:2} + 2.3 * ( ( {Height ft:3} * 12 + {Height in:4} ) - 60 ) ) * 2.2046

7. Healthy range from (lb) · Number · ID 7
Number Format 9,999.99; Description “BMI 18.5”; Layout: half width, on the same row as its neighbour (drag the field beside it in the editor; no CSS class needed); Custom CSS Class (Appearance tab) fo-result fo-result--sub; tick Enable Calculation, Rounding 0; Conditional Logic (Advanced tab): Show this field if Units is ft / lb..

18.5 * ( {Height ft:3} * 12 + {Height in:4} ) * ( {Height ft:3} * 12 + {Height in:4} ) / 703

8. Healthy range to (lb) · Number · ID 8
Number Format 9,999.99; Description “BMI 24.9”; Layout: half width, on the same row as its neighbour (drag the field beside it in the editor; no CSS class needed); Custom CSS Class (Appearance tab) fo-result fo-result--sub; tick Enable Calculation, Rounding 0; Conditional Logic (Advanced tab): Show this field if Units is ft / lb..

24.9 * ( {Height ft:3} * 12 + {Height in:4} ) * ( {Height ft:3} * 12 + {Height in:4} ) / 703

9. Ideal weight (kg) · Number · ID 9
Number Format 9,999.99; Description “Devine formula: a starting point, not a target. The healthy range below matters more.”; Custom CSS Class (Appearance tab) fo-result; tick Enable Calculation, Rounding 1; Conditional Logic (Advanced tab): Show this field if Units is cm / kg..

{Sex:2} + 2.3 * ( ( {Height cm:5} / 2.54 ) - 60 )

10. Healthy range from (kg) · Number · ID 10
Number Format 9,999.99; Description “BMI 18.5”; Layout: half width, on the same row as its neighbour (drag the field beside it in the editor; no CSS class needed); Custom CSS Class (Appearance tab) fo-result fo-result--sub; tick Enable Calculation, Rounding 1; Conditional Logic (Advanced tab): Show this field if Units is cm / kg..

18.5 * ( {Height cm:5} / 100 * {Height cm:5} / 100 )

11. Healthy range to (kg) · Number · ID 11
Number Format 9,999.99; Description “BMI 24.9”; Layout: half width, on the same row as its neighbour (drag the field beside it in the editor; no CSS class needed); Custom CSS Class (Appearance tab) fo-result fo-result--sub; tick Enable Calculation, Rounding 1; Conditional Logic (Advanced tab): Show this field if Units is cm / kg..

24.9 * ( {Height cm:5} / 100 * {Height cm:5} / 100 )

3. Hide the submit button

The results are live, so nothing needs submitting. Add this filter to your theme’s functions.php or a code-snippets plugin; it hides the button on any form carrying the fo-live-only class:

add_filter( 'gform_submit_button', function ( $button, $form ) {
	return str_contains( (string) rgar( $form, 'cssClass' ), 'fo-live-only' ) ? '' : $button;
}, 10, 2 );

Or with CSS alone: .fo-live-only_wrapper .gform_footer { display: none; }

4. Put it on a page and make it look like this

Add the form to any page with the Gravity Forms block, or the shortcode [gravityform id="X" title="false" ajax="false"]. The form inherits your theme’s styles; the classes you set in step 2 are hooks for the look you see on this site:

• fo-result on a calculation field makes it the big teal result panel.
• fo-result fo-result--sub makes the smaller secondary figures.
• fo-segmented on a radio field turns it into a segmented switch.
• Two fields on one row is the editor’s own column layout: drag a field beside another and the row splits in half. No CSS class is needed, and the old gf_left_half Ready Classes are deprecated.

The bundle includes the two stylesheets that implement those classes, with notes on matching your brand colours. Without them the form still works; it just looks like your theme’s default Gravity Forms styling.

How the maths works is explained under “How it’s calculated” on the live Ideal weight range.