Great extension, we use it for our online store and works perfect!
Paint Calculator Pro
- Item Number (EMMO): PCP-00
Key facts at a glance
Shoppers guess tins, then buy too few or too many. Paint Calculator Pro sits on the Magento product page. They enter a room size, or wall length × height, plus coats, openings, and waste. The panel returns liters, units to buy, and an estimated total, then can copy that quantity into Add to Cart.
Coverage from the tin. Units from the SKU.
The work is done in square meters and liters. If the storefront is set to ft², values convert automatically. Units always round up, so the customer does not run short.
Learn more ›Area, walls, or both
Stores → Configuration → Emmo Extensions → Paint Calculator Pro. The default input mode is Both. Shoppers use Magento validation, and the panel can open expanded or collapsed.
Learn more ›Liters, buckets, and a price. Then the Magento qty field.
Coats run from 1 to 5. Waste comes from the list you set. Openings take doors and windows off the painted area. Apply quantity copies the units into Magento’s qty field. They still click Add to Cart.
Learn more ›Two numbers on the product, and the widget appears
The attribute group is Emmo Paint Calculator. Coverage and Unit Content must be greater than zero. Everything else is optional.
Learn more ›How a tin becomes a quantity
One unit
A 50 m² room, 10 m²/L, and a 2.5 L tin: one unit covers 25 m², so the room needs 2 units (5 L).
Coats and waste
Two coats and 10% waste raise the unit count. The SKU stays the same.
Units and liters
Math runs in square meters and liters. A storefront set to ft² converts automatically. Units always round up.
The price
The estimate uses Magento’s final price, including a special price and the tax display.
How they describe the room
Single area
They already know the m² or ft². One field: the area to be painted. Fast for trade buyers who measured the room.
Length × height
Wall length × wall height × number of walls. Doors and windows are deducted when openings are enabled.
Both
The shopper chooses. This is the default, and the better fit for mixed retail: DIY uses dimensions, trade types the area.
What the panel asks
Coats 1–5
The default comes from store config, or from Recommended Coats on the product. Primer is often 1. Wall paint is often 2.
Waste %
A dropdown from your list. The usual set is 0, 5, 10, and 15. Effective area grows so they do not under-buy.
Openings
Subtract doors and windows from the painted area. The number of walls multiplies length × height.
Apply quantity
Copies the calculated units into Magento’s qty field. They still click Add to Cart. This needs the default Magento qty field.
What you set on the product
Coverage (m²/L)
Match the tin. If the can says 10 m²/L, enter 10. Required, and it must be greater than zero.
Unit content (L)
Liters in this SKU. A 2.5 L tin is 2.5, not the room size. Required, and it must be greater than zero.
Liters per bucket
Optional. Improves the “X buckets” wording when the pack size differs from the SKU.
Enable Paint Calculator
Use Config or Auto, force Yes, or force No. Category IDs can limit which products show it. Simple and configurable product pages are both supported. Labels follow the store view.
Use it when
You sell paint by the tin, and coverage is on the label.
- Interior and exterior paint, primer, masonry, and wood.
- You want DIY and trade to land on the right quantity.
- You need m² or ft² without a second catalog.
- Labels should follow the store-view language.
Do not expect
It does not mix color or draw the room.
- No 3D planner, and no color visualizer.
- No cart or checkout calculator. The product page only.
- The price is Magento’s final price, with special price and tax display.
- Apply quantity needs the default Magento qty field.
Five steps. One test SKU first.
- 1Enable Emmo_PaintCalculatorPro and run setup:upgrade. Unzip the package as app/code/Emmo/PaintCalculatorPro.
- 2Stores → Configuration → Emmo Extensions → Paint Calculator Pro. Set Enable Calculator to Yes.
- 3On the product, fill Coverage (m²/L) and Unit Content (L). Coats and bucket liters are optional.
- 4Set the input mode to Both. Turn coats, openings, and waste on. Use category IDs if only Paint should show the panel.
- 5Enter 50 m². Confirm units and price, then Apply quantity and Add to Cart.
No color mixer. No room planner. No Hyvä Checkout package. The calculator is the Magento product page widget, plus Admin config and product attributes. Magento 2.4.x Open Source and Adobe Commerce. PHP 8.1–8.5. Simple and configurable product pages. Store-view labels. The user guide covers attributes, the formula, visibility rules, and troubleshooting. Support: [email protected]
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Reviews
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We have been using the module on our site for several years now and love the enhanced functionality,
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The extension took me a little time to understand but after that it was all easy and smooth.
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