Tumbler Size Chart in Ounces and Milliliters
12 US fl oz is about 355 mL. 40 US fl oz is about 1,183 mL. Use the chart for sizes in between, then check the model’s lid and base diameter.
By Feng, Head of After-Sales Service & Online Marketing Lead
Common tumbler sizes include 12, 14, 16, 20, 24, 30 and 40 US fl oz, approximately 355, 414, 473, 591, 710, 887 and 1,183 ml. Use the chart to compare volume, then confirm the selected model's listed capacity and measuring method. A 750 ml model is about 25.4 US fl oz, not exactly 24 oz. BG Drinkware's usual MOQ is 500 pieces per model per colour. Different logos have separate MOQs. Lower quantities for some startup teams can be considered for the specific order.
What are the standard tumbler sizes?
Seven sizes cover most tumblers: 12, 14, 16, 20, 24, 30 and 40 oz. Smaller sizes are used for coffee and children, 20 oz is the everyday size, and 30 and 40 oz are travel and all-day sizes, usually with a handle. The chart gives each size in millilitres and US cups.
| Size | Millilitres | US cups | Typical use | BG model to compare (check listed capacity) |
|---|---|---|---|---|
| 12 oz | 355 ml | 1.5 | Coffee, children | 12 oz kids cup with a straw |
| 14 oz | 414 ml | 1.75 | Coffee, small hands | 14 oz and 20 oz tumbler with a handle |
| 16 oz | 473 ml | 2 | Coffee, office | 470 ml tapered coffee tumbler |
| 20 oz | 591 ml | 2.5 | Everyday, sublimation blanks | 20 oz straight sublimation tumbler |
| 24 oz | 710 ml | 3 | Iced drinks, gym | 750 ml tumbler with a handle (about 25.4 oz, larger than 24 oz) |
| 30 oz | 887 ml | 3.75 | Travel, long days | 30 oz tumbler with lid options |
| 40 oz | 1,183 ml | 5 | All-day water | 40 oz tumbler with a flip-up spout |
Millilitres use the NIST factor for the US fluid ounce, approximately 29.5735 ml. Figures in the chart are rounded to the nearest millilitre. For single sizes in depth, see 20 oz, 30 oz and 40 oz tumblers.
How do millilitre models map to ounce labels?
Most product pages round to a neat millilitre figure. A 20 oz tumbler is usually listed as 600 ml, a 30 oz as 900 ml and a 40 oz as 1,200 ml, although the exact conversions are 591, 887 and 1,183 ml. Some models are designed in millilitres and only roughly match an ounce label.
| Listed capacity | In US fluid ounces | Nearest label |
|---|---|---|
| 420 ml | 14.2 oz | 14 oz |
| 600 ml | 20.3 oz | 20 oz |
| 750 ml | 25.4 oz | 24–25 oz |
| 850 ml | 28.7 oz | 28–30 oz |
| 900 ml | 30.4 oz | 30 oz |
| 1,000 ml | 33.8 oz | 34 oz |
| 1,200 ml | 40.6 oz | 40 oz |
Confirm the capacity and measuring position for the selected model before printing packaging. Ask whether the quoted volume is measured to the rim, thread or another fill line, and check the usable volume with the chosen lid. Ice takes up part of that space. Use the agreed measurement on the order.
Which tumbler sizes fit a car cup holder?
| Model | Listed capacity | Base diameter | Height with lid |
|---|---|---|---|
| Steel-straw handled tumbler | 40 oz nominal / 1,200 ml supplier specification | 9 cm | 29 cm |
| Flip-lid commuter mug | 510 ml | 68 mm | 175 mm |
These are the dimensions published for those two models, not measurements for every tumbler of the same capacity. Check the approved sample against the intended holder.
Capacity does not decide it; the base diameter does. Many large tumblers have a tapered lower body so a 30 or 40 oz cup still fits a car cup holder. BG Drinkware lists, for example, a tapered 9 cm base on one 40 oz tumbler and a 68 mm base on a 510 ml commuter mug.
Cup holders vary between vehicles, so ask for the base diameter of the exact model and test the sample in the vehicles your customers use. Models with a tapered, cup-holder-friendly base include the 40 oz tumbler with a steel straw, the 600 and 900 ml tumbler with a metal handle and the 510 ml commuter mug.
Which tumbler size should a brand choose?
Match the size to how the cup will be used. A 12 to 16 oz tumbler suits coffee and children, 20 oz suits everyday use and printing blanks, 30 oz suits commuters and long workdays, and 40 oz suits all-day water. Many ranges sell two sizes of one design, such as 20 and 30 oz.
Coffee and gifts
12–16 oz with a sip or sliding lid.
Printing blanks
20 oz straight-sided, the most common sublimation blank.
Commuters
20–30 oz with a handle and a leak-resistant lid.
All-day water
30–40 oz with a handle and a straw lid.
See what a tumbler is, blank tumblers and tumblers.
How should you write the tumbler size on an order?
Compare samples using the same lid and measuring method. Record base diameter, overall height with the lid fitted and the widest point, including the handle. Check the packed sample in the chosen retail box. These dimensions decide cup-holder and packaging fit more reliably than the ounce label.
Write the capacity in millilitres, say whether it is brim-full or to the thread, and name the exact model and lid. Add the quantity, the colour, the logo method, the packaging, the payment terms and the trade terms. If cup-holder fit matters, ask for the base diameter in millimetres.
- CapacityIn millilitres, brim-full or to the thread.
- Model and lidThe product page and the lid; lids differ by size.
- Base diameterIf the tumbler has to fit a cup holder.
- Quantity and coloursBG Drinkware's usual MOQ is 500 pieces per model per colour. Different logos have separate MOQs. Lower quantities for some startup teams can be considered for the specific order.
- Logo, packaging and termsLogo method, carton or box, payment terms and trade terms.
An existing-model sample normally takes up to 7 days. Bulk production normally takes 7–12 days from the deposit, subject to the agreed order schedule. Late approvals or artwork changes can affect the schedule. See tumblers in bulk.
Tumbler sizes FAQ
Short answers to the questions buyers ask most about tumbler sizes: the standard size, how big a 40 oz tumbler is, and how 20 and 30 oz compare. The figures use the NIST conversion factor and BG Drinkware’s listed product range. Confirm measurement details for the selected model.
What is the most common tumbler size?
The 20 oz tumbler is the most common everyday size. It holds 591 ml, about two and a half US cups, and is usually listed as 600 ml. It is also the most common size for sublimation blanks: the 20 oz straight tumbler is the one BG Drinkware sells most often as a sublimation blank.
How big is a 40 oz tumbler?
A 40 oz tumbler holds 1,183 ml, or five US cups, and most product pages list it as 1,200 ml. It is the large handled size for all-day water. Many 40 oz tumblers have a tapered lower body so they still fit a car cup holder; one BG Drinkware 40 oz model lists a tapered 9 cm base.
What is the difference between a 20 oz and a 30 oz tumbler?
A 30 oz tumbler holds 887 ml, half as much again as a 20 oz tumbler at 591 ml. It is taller or wider and usually has a handle, while 20 oz tumblers often do not. Choose 20 oz for daily coffee or water and 30 oz for commuting and long days between refills.
Are tumbler sizes measured with ice and a lid?
Confirm how the selected model is measured. Brim-full volume, a stated fill-line volume and usable volume with the lid fitted can differ. Ice also takes up space. Ask for the measuring position and lid configuration to be recorded with the sample, then use that agreed capacity on the order and packaging.
Sources
This guide compares BG Drinkware’s listed tumbler range. Confirm capacity and dimensions for the selected model. Related guides: 40 oz in litres, straw sizes for 40 oz tumblers and tumbler handles.
Choosing tumbler sizes?
Send the capacity in millilitres, quantity, model and lid, colour, logo method, packaging, payment terms and trade terms.
