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great_6577
January 13, 2026
Answered

How to use accurate units for international packaging designs in illustrator?

  • January 13, 2026
  • 2 replies
  • 234 views

We want to design a packaging label for a liquid product in Adobe Illustrator. The product will be sold in both the US and Latin America.

We want to avoid mistakes between liquid volume units such as US liquid gallons vs Imperial gallons.

Is there any built-in standard or best practice in Adobe apps for handling unit conversions or its entirely on the designer to convert and verify the volume values manually?

Correct answer intelligent_Haven5C82

What’s causing the confusion is that “gallon” is not a single standardized unit, while liter is.

In practical packaging work, designers usually rely on these two type of gallons only:

  • US liquid gallon → 1 gal = 3.785 liters

  • Imperial (UK) gallon → 1 gal = 4.546 liters

Here is the Common conversion logic i found:

  • Gallons → Liters: multiply

    • US: Liters = Gallons × 3.785

    • Imperial: Liters = Gallons × 4.546

  • Liters → Gallons: divide

    • US: Gallons = Liters ÷ 3.785

    • Imperial: Gallons = Liters ÷ 4.546

Adobe apps don’t validate or manage this. Therefore experienced designers keep a verified conversion references when working across US, UK, and metric markets.

I cited the conversion reference from Galones a Litros : a well-researched publication on Metric System & Imperial system history, evolution of units & accurate values in use today.

2 replies

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intelligent_Haven5C82Correct answer
January 14, 2026

What’s causing the confusion is that “gallon” is not a single standardized unit, while liter is.

In practical packaging work, designers usually rely on these two type of gallons only:

  • US liquid gallon → 1 gal = 3.785 liters

  • Imperial (UK) gallon → 1 gal = 4.546 liters

Here is the Common conversion logic i found:

  • Gallons → Liters: multiply

    • US: Liters = Gallons × 3.785

    • Imperial: Liters = Gallons × 4.546

  • Liters → Gallons: divide

    • US: Gallons = Liters ÷ 3.785

    • Imperial: Gallons = Liters ÷ 4.546

Adobe apps don’t validate or manage this. Therefore experienced designers keep a verified conversion references when working across US, UK, and metric markets.

I cited the conversion reference from Galones a Litros : a well-researched publication on Metric System & Imperial system history, evolution of units & accurate values in use today.

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great_6577Author
January 14, 2026

I understand now why adobe apps dont have this feature. Gallon is not even standardized even on the reference publication I found a 3rd type of galon(dry) as well.  So definitely Adobe can't make a feature here unless its all standardized. Thanks for helping out. 

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intelligent_Haven5C82
January 14, 2026

No problem @great_6577  its definitely a good designer practice to verify units. Community members are here to help each other.

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intelligent_Haven5C82
January 13, 2026

No, Adobe applications like Illustrator, InDesign, and Photoshop don’t handle real-world volume units internally. They only manage layout units (points, mm, inches).

For international packaging design, the responsibility is fully on the designer to convert and verify volume units correctly. 

Designers working on liquid product packaging need to have basic knowledge of inter-converting liquid galons, ounces, pints, quartz & litres. 

(PLUS :  To avoid mistakes, understand Metric System & Imperial System. Always check the right unit for package labels of local markets in US, Canada & Latin American countries. The adoption of measurement units is non-uniform in these regions.)

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    great_6577Author
    January 13, 2026

    @intelligent_Haven5C82  We have got a conversion chart from our client which did some help understanding the Imperial & Metric systems. UK & Canada are marked as litres adopters. US & Latin America is labeled as galon users. Fine. But why so many galon types? but 1 litre unit. Even some videos say 3 types of galon.
    Its my first project of liquid packaging so I am struggling a lot over this.

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