Hours worked calculator template

Free build guide: Hours worked calculator for WordPress

This guide rebuilds the Hours worked calculator from this site in Gravity Forms: 8 inputs, 5 live results and no submit button. Expect about 39 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:

• Hours per shift
• Hours per week
• Minutes per shift
• Pay per shift
• Pay per week

What you need

• Gravity Forms (any license) — Calculation fields and radio values 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 Hours worked.
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. Start hour (0–23) · Number · ID 1
Number Format 9,999.99; Default Value 9; Description “24-hour clock: 9 for 9 am, 14 for 2 pm.”; Layout: half width, on the same row as its neighbor (drag the field beside it in the editor; no CSS class needed).

2. Start minute · Number · ID 2
Number Format 9,999.99; Default Value 0; Layout: half width, on the same row as its neighbor (drag the field beside it in the editor; no CSS class needed).

3. End hour (0–23) · Number · ID 3
Number Format 9,999.99; Default Value 17; Layout: half width, on the same row as its neighbor (drag the field beside it in the editor; no CSS class needed).

4. End minute · Number · ID 4
Number Format 9,999.99; Default Value 30; Layout: half width, on the same row as its neighbor (drag the field beside it in the editor; no CSS class needed).

5. Unpaid break (minutes) · Number · ID 5
Number Format 9,999.99; Default Value 30; Layout: half width, on the same row as its neighbor (drag the field beside it in the editor; no CSS class needed).

6. Shift ends · Radio Buttons · ID 6
Layout: half width, on the same row as its neighbor (drag the field beside it in the editor; no CSS class needed); Custom CSS Class (Appearance tab) fo-segmented.

Choices (tick show values and enter each value):

• Same day — value 0 (selected by default)
• Next day — value 1

7. Shifts per week · Number · ID 7
Number Format 9,999.99; Default Value 5; Layout: half width, on the same row as its neighbor (drag the field beside it in the editor; no CSS class needed).

8. Hourly rate · Number · ID 8
Number Format Currency; Default Value 20; Description “Optional, for the pay figures.”; Layout: half width, on the same row as its neighbor (drag the field beside it in the editor; no CSS class needed).

9. Hours per shift · Number · ID 9
Number Format 9,999.99; Description “Decimal hours: 7.5 is 7 h 30 min, 8.25 is 8 h 15 min.”; Custom CSS Class (Appearance tab) fo-result; tick Enable Calculation, Rounding 2.

( ( {End hour:3} * 60 + {End minute:4} + {Next day:6} * 1440 - {Start hour:1} * 60 - {Start minute:2} - {Break:5} ) / 60 )

10. Hours per week · Number · ID 10
Number Format 9,999.99; Layout: half width, on the same row as its neighbor (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 2.

( ( {End hour:3} * 60 + {End minute:4} + {Next day:6} * 1440 - {Start hour:1} * 60 - {Start minute:2} - {Break:5} ) / 60 ) * {Shifts:7}

11. Minutes per shift · Number · ID 11
Number Format 9,999.99; Layout: half width, on the same row as its neighbor (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.

( ( {End hour:3} * 60 + {End minute:4} + {Next day:6} * 1440 - {Start hour:1} * 60 - {Start minute:2} - {Break:5} ) / 60 ) * 60

12. Pay per shift · Number · ID 12
Number Format Currency; Layout: half width, on the same row as its neighbor (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 2.

( ( {End hour:3} * 60 + {End minute:4} + {Next day:6} * 1440 - {Start hour:1} * 60 - {Start minute:2} - {Break:5} ) / 60 ) * {Rate:8}

13. Pay per week · Number · ID 13
Number Format Currency; Layout: half width, on the same row as its neighbor (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 2.

( ( {End hour:3} * 60 + {End minute:4} + {Next day:6} * 1440 - {Start hour:1} * 60 - {Start minute:2} - {Break:5} ) / 60 ) * {Shifts:7} * {Rate:8}

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 colors. Without them the form still works; it just looks like your theme’s default Gravity Forms styling.

How the math works is explained under “How it’s calculated” on the live Hours worked calculator.