40 oz in Liters, Milliliters and Cups
40 US fl oz is about 1,183 mL or 1.18 L. It is also 5 US cups. A tumbler marked 1,200 mL uses a rounded size. For other capacities, see the tumbler size chart.
40 oz is 1.18 liters, or 1,183 ml, because one US fluid ounce is 29.5735 ml; in imperial fluid ounces, used in the UK, 40 fl oz is about 1.14 liters. In US cups of 8 fluid ounces, 40 oz is exactly 5 cups, and in metric cups of 250 ml it is about 4.7 cups. Factories usually list the size as 1,200 ml, a rounded nominal figure that does not establish the brimful or practical fill volume of a particular model. Across ten selected BG Drinkware 40 oz models, published heights run from 26 to 29.8 cm with a median of 27 cm, and nine product pages publish unit weights from 473.3 to 550 g, although the pages do not define the included components consistently. Every one of those models uses a 304 stainless steel interior with a 201 stainless steel exterior. Taller lid assemblies account for the tallest models, so confirm what a listed height includes before designing a box.
How many liters is 40 oz?
40 oz is 1.18 liters (1,183 ml), because one US fluid ounce is 29.5735 ml. In imperial fluid ounces, used in the UK, 40 fl oz is about 1.14 liters.
The conversion factor comes from the National Institute of Standards and Technology (NIST). In US cups of 8 fluid ounces, 40 oz is exactly 5 cups. Factories usually list this size as 1,200 ml, which is a rounded nominal size; it does not establish the brimful or practical fill volume of a particular model. Several BG Drinkware product pages say so directly: "1200ml (nominal 40oz)". If capacity matters for a label or a claim, ask how it was measured; our bottle sizes guide explains brimful and fill-line capacity. To compare 40 oz models, see our 40 oz tumbler buyer guide.
How many cups is 40 oz?
40 oz is 5 US cups, because a US cup is 8 fluid ounces; in metric cups of 250 ml it is about 4.7 cups.
A true 40 US fl oz fill is equivalent to five 8 fl oz servings. A tumbler’s usable fill volume may differ from its nominal label. For half and double sizes, 20 oz is 2.5 cups (about 0.59 L) and 80 oz is 10 cups (about 2.37 L).
To turn daily water into bottles of a given size, see how many water bottles to drink a day.
How tall is a 40 oz tumbler?
The ten selected models list heights from 26 to 29.8 cm, with a median of 27 cm. Confirm whether a quoted height includes the lid and any straw cover.
Published height, 10 models
Swipe the chart sideways to see all models.
Each dot is one model; the lid style of each model is in the table below. Source: BG Drinkware product specifications.
Most models cluster at 26–27 cm. The three tallest, at 29–29.8 cm, have taller lid assemblies: a locking dual-sip lid, a one-touch lock lid and a tethered-cap lid with a steel straw. One product page notes that its 29 cm height may include the straw cover, so confirm what a listed height includes before you design a box around it.
How much does a 40 oz tumbler weigh?
Nine selected product pages publish unit weights from 473.3 to 550 g, with a median of 522.1 g. Not every page defines the same included components, so confirm the weight basis before comparing models.
Published unit weight, 9 models
Swipe the chart sideways to see all models.
One model is excluded because it publishes bare-cup and boxed weights rather than the unit-weight figure used here. Component inclusion is not uniform across all nine pages. Source: BG Drinkware product specifications.
Lid and handle configurations differ, so capacity alone does not establish the shipped unit weight. The lowest published unit weight is 473.3 g for a one-touch lock model; the highest published unit weight is 550 g for a hidden pop-up straw model. For shipping, use the boxed or carton weight instead: one model lists 590 g with its individual box.
Will a 40 oz tumbler fit in a car cup holder?
Many tumblers in this size fit a car cup holder because the lower body narrows, but fit depends on the base diameter, the holder's depth and the space around the handle.
Five of the ten models publish a base diameter: 6.5, 7.5, 7.5, 8 and 9 cm. The other product pages give overall dimensions only and ask buyers to confirm the base.
- Measure the cup holders your customers use: opening and depth
- Ask for the base diameter, not the mouth diameter (9.6–11.5 cm here)
- Check that the handle clears the console when the tumbler sits down
- Test the approved sample in the actual vehicle or holder
What are 40 oz tumblers made of?
All ten BG Drinkware 40 oz models use a 304 stainless steel inner wall, which touches the drink, and a 201 stainless steel outer wall, which carries the coating.
These are the grades listed on the ten linked product pages, not a universal specification for every tumbler. The visible factory image shows an outer-wall finishing stage, not a material test. See our manufacturing process and quality-control approach for the broader workflow. If your market or brand requires 304 on both walls, specify that in the quote request and confirm the materials for the approved model.
For the straw itself, see tumbler straws: silicone, stainless steel or plastic.
40 oz tumbler specifications compared
The table lists the published specifications of all ten models, so you can compare lid style, size, weight, MOQ and packing in one place.
| Model | Lid style | Published height (cm) | Base Ø (cm) | Mouth Ø (cm) | Published unit weight (g) | MOQ (pcs) | Per carton |
|---|---|---|---|---|---|---|---|
| 40oz Tumbler with Large Handle & Straw Cap | Straw cap | 26.5 | 7.5 | 9.6 | 507 | 500 | 25 |
| 40oz Tumbler with Handle and Dual-Drink Lid | Dual-drink (straw + sip) | 26 | – | – | 522.1 | 500 | 25 |
| 40oz Straw Tumbler with One-Touch Lock | One-touch lock, straw | 29 | 6.5 | – | 473.3 | 1,000 / colour | 25 |
| 40oz Tumbler with Hidden Pop-Up Straw | Hidden pop-up straw | 27 | – | 10 | 550 | 1,000 | 25 |
| 1200ml Dual-Drink Tumbler, Silicone-Grip Handle | Dual-drink (straw + sip) | 27 | – | 10 | 522.1 | 500 / colour | 25 |
| Bulk 40 oz Tumbler, Steel Straw & Tethered Cap | Sip + steel straw, tethered cap | 29 | 9 | 11.2 | – | 500 / colour | 20 |
| 1200ml Flat-Lid Tumbler with Straw and Handle | Flat straw lid | 27 | – | – | 522.1 | 500 | 25 |
| 40 oz Tumbler with Flip-Up Spout | Flip-up spout | 26.8 | – | – | 531.9 | 500 | 25 |
| 40 oz Tumbler with Dual-Sip Locking Lid | Dual sip + safety lock | 29.8 | 7.5 | 9.9 | 543 | 500 / colour | 20 |
| 1200ml Tumbler, Dual-Drink Lid & Steel Straw | Sip or steel straw | 27 | 8 | 11.5 | 530 | 500 / colour | 40 |
Swipe the table sideways to see all columns.
"–" means the product page does not publish that value. All models: 304 stainless steel interior, 201 stainless steel exterior. Height and unit-weight measurement bases are not uniform across every page; one product notes that the straw-cover inclusion in its published height is unconfirmed. Verify the agreed measurement points on the approved sample.
How many 40 oz tumblers fit in a carton?
Most BG Drinkware 40 oz models ship 25 per carton, so a 500-piece order fills 20 cartons of about 0.13 m³ each.
For a 500-piece order in the common 25-per-carton format, one product page calculates 20 cartons, about 2.63 m³ and 337 kg gross. Two models start at 1,000 pieces, and several count the MOQ per colour, which changes the carton count for a multi-colour order. Confirm the final packing list and gross weight for the selected model before booking freight.
Planning a branded run?
Ordering 40 oz tumblers for a store or a campaign? Compare models, lids and carton sizes on our wholesale tumblers page. Existing models can be sampled in up to 7 days, and bulk production takes 7–12 days after the sample is approved.
40 oz tumbler FAQ
How many cups is a 40 oz tumbler?
It holds 5 US cups, because a US cup is 8 fluid ounces.
Is a 40 oz tumbler the same as 1,200 ml?
Almost. 40 US fluid ounces is about 1,183 ml. Factories round it to 1,200 ml as a nominal size, so treat both as the same class of tumbler and check the measured capacity if it matters.
How tall is a 40 oz tumbler with the lid?
The ten selected pages list 26 to 29.8 cm, with a median of 27 cm. Confirm whether the stated height includes the lid and straw cover.
Is a 40 oz tumbler too heavy to carry?
The nine published unit weights shown here range from 473.3 to 550 g, but the included components are not defined consistently. A 40 US fl oz fill adds about 1.18 kg of water; verify the selected model’s usable fill and assembled weight.
Are 40 oz tumblers leak-proof?
It depends on the lid. Straw lids are generally meant to be carried upright; one BG Drinkware page states its flat straw lid is not a sealed closure for inverted carrying. Check the lid's leak test for your model.
Sources
- NIST Guide to the SI, Appendix B.9 (fluid ounce)
- BG Drinkware product specification pages for the ten models listed in the table.
Compare 40 oz models for your order
Tell us your cup-holder target, lid style, colours and quantity. BG Drinkware will shortlist the 40 oz models that fit and quote them side by side.
