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
Emmo · Magento 2
How much paint? Answer it on the product page
Shoppers guess tins, then buy too few or too many. Paint Calculator Pro sits on the Magento product page: they enter room size (or wall length × height), coats, openings, and waste. The panel returns liters, units to buy, and an estimated total — then can copy that quantity into Add to Cart.
PDP calculator
m² or ft²
Coats & waste
Doors & windows
Apply quantity
The math
Coverage from the tin. Units from the SKU.
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.
50 m² room · 10 m²/L · 2.5 L tin
→ one unit covers 25 m²
→ 2 units (5 L)
+ 2 coats and 10% waste
→ more units, same SKU
Input modes
Area, walls, or both
Stores → Configuration → Emmo Extensions → Paint Calculator Pro. Default input mode is Both. Shoppers use Magento validation; the panel can open expanded or collapsed.
Single area
They already know the m² or ft²One field: area to be painted. Fast for trade buyers who measured the room.
Length × height
Build the area from the wallsWall length × wall height × number of walls. Deduct doors and windows when you enable openings.
Both
Let the shopper chooseRecommended for mixed retail: DIY uses dimensions; trade types the area.
What they get
Liters, buckets, price — then the Magento qty field
Coats 1–5
Default coats from store config, or Recommended Coats on the product (primer = 1, wall paint = 2).
Waste %
Dropdown from your list — default 0, 5, 10, 15. Effective area grows so they do not under-buy.
Openings
Subtract doors and windows from painted area. Number of walls multiplies length × height.
Apply quantity
Copies calculated units into Magento’s qty field. They still click Add to Cart.
Catalog
Two numbers on the product and the widget appears
Attribute group Emmo Paint Calculator. Coverage and Unit Content must be greater than zero. Everything else is optional.
Coverage (m²/L)
Match the tin. If the can says 10 m²/L, enter 10.
Unit Content (L)
Liters in this SKU — a 2.5 L tin is 2.5, not the room size.
Liters per bucket
Improves “X buckets” wording when the pack size differs from the SKU.
Enable Paint Calculator
Use Config / Auto, force Yes, or force No. Category IDs can limit who sees it.
Use it / leave it
A paint qty tool — not a room designer
Use it when
You sell paint by the tin and coverage is on the label- Interior / exterior paint, primer, masonry, wood
- You want DIY and trade to land on the right qty
- 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, no color visualizer
- No cart or checkout calculator — product page only
- Price is Magento’s final price (special + tax display)
- Apply quantity needs the default Magento #qty field
Go live
Five steps. One test SKU first.
1
Install
Enable Emmo_PaintCalculatorPro and run setup:upgrade.
2
Turn it on
Emmo Extensions → Paint Calculator Pro → Enable Calculator = Yes.
3
Fill paint data
Coverage (m²/L) and Unit Content (L) on the product. Optional coats and bucket liters.
4
Tune the panel
Input mode Both. Coats, openings, waste on. Category IDs if only Paint should show it.
5
Check the PDP
Enter 50 m², confirm units and price, Apply quantity, Add to Cart.
What you get
Compatibility
Magento 2.4.x
Open Source & Adobe Commerce
PHP 8.1+
Simple + configurable PDP
Store-view labels
Downloads
- Module package — unzip as app/code/Emmo/PaintCalculatorPro, enable, run setup:upgrade
- User guide — attributes, formula, visibility rules, troubleshooting
Not included
No color mixer. No room planner. No Hyvä Checkout package. The calculator is the Magento product page widget plus Admin config and product attributes.
Help shoppers buy the right number of tins — coverage from the label, quantity into the cart. Support: [email protected]
More Information
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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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