FREE PACKAGING TOOL

Ounce Conversion Calculator

Convert ounces into milliliters, grams, liters, pounds, kilograms, gallons and estimated sprays for cosmetic packaging projects.

US & Imperial fluid ouncesVolume and weight modesPackaging-focused guidance

Oz Conversion Calculator

Choose whether your ounce value describes liquid volume or mass. The calculator applies the correct conversion factor and rounds the result for easy packaging planning.

Ounces (oz)

Measurement type

Convert oz to

Fluid-ounce system

Decimal places

29.5735 mLFormula: 1 × 29.5735295625Measurement type: Volume

For liquid products, use fluid ounces. For bottle, closure or carton weight, use weight ounces. A fluid ounce cannot be converted to grams without the formula density.

Popular Ounce Converters

Oz to mL

For bottle capacity and liquid fill volume.

Oz to grams

For formula or component mass.

Oz to liters

For bulk fill planning and larger containers.

Oz to pounds

For cartons and freight documents.

mL and Spray Calculator

Spray count is an estimate. The actual output depends on the pump, formula, dip tube, priming strokes and actuation.

Liquid volume (mL)

Measured pump output (mL per spray)

≈ 1,000 spraysEstimate only; test the filled package for a production specification.

Common Packaging Size Conversions

US fl oz	Exact mL	Nominal pack size	Типичные области применения
0.17	5.03	5 mL	Sample vial or mini treatment
0.34	10.06	10 mL	Travel perfume or serum
1.00	29.57	30 mL	Serum, perfume or facial oil
1.70	50.28	50 mL	Cream jar or fragrance bottle
3.40	100.55	100 mL	Perfume, toner or spray bottle
6.76	199.93	200 mL	Lotion or skincare bottle

Nominal commercial sizes are not always mathematically exact. Confirm brimful capacity, recommended fill level, headspace and labeling requirements with samples.

Conversion Formulas

US fl oz to mL

mL = US fl oz × 29.5735295625

Imperial fl oz to mL

mL = Imperial fl oz × 28.4130625

Weight oz to grams

g = oz × 28.349523125

Weight oz to pounds

lb = oz ÷ 16

Ounce Converter FAQs

Is 1 oz always 29.57 mL?

No. One US fluid ounce is 29.5735 mL, while one Imperial fluid ounce is 28.4131 mL. A weight ounce measures mass, not liquid volume.

Can I convert fluid ounces to grams?

Only when the formula density is known. Use mass in grams = volume in mL × density in g/mL.

How many sprays are in 1 mL?

It depends on the atomizer. If the measured output is 0.10 mL per actuation, 1 mL is approximately 10 sprays.

Need packaging matched to a target capacity?

Share your fill volume, formula type, closure preference, decoration requirements and destination market. Our team can help review suitable bottles, jars, pumps and sprayers.

Discuss your packaging project