Add your latex and foil balloons by size and this helium balloon calculator shows how much helium you need and the helium tank that fills them all. Free, no sign-up, with a tank size chart below.
Helium Math
How it works
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4 States
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Add each balloon size and how many. You get the total helium in cubic feet, the helium tank that fits, and how many more balloons it can fill.
Tap a line to pick one or more balloon sizes at once, then type how many of each. The tank fills up as you go. Tap × to remove a line.
Count Your Balloons
Write down how many balloons you have of each size and type: latex, foil or bubble.
Find Helium per Balloon
An 11 inch latex takes about 0.5 cubic feet, a 9 inch about 0.25. See the chart below for every size.
Add It Up
Multiply each count by its helium and add the totals. That is the cubic feet you need.
Add 10% and Pick the Tank
Add about 10% for extras and pops, then pick the smallest tank that holds the total.
This helium balloon chart shows how much helium each latex, foil and bubble balloon takes, how long it floats, and how many of each size every tank fills. It covers all six helium tank sizes we rent. Find your balloon in the helium tank size chart, then read across to the tank you need, or let the helium balloon calculator above add up a mixed order.
| Balloon | Helium per balloon | Balloons each tank fills | Floats (indoors) | |||||
|---|---|---|---|---|---|---|---|---|
| Tiny33 cu ft$195 | Extra Small60 cu ft$285 | Small90 cu ft$385 | Medium110 cu ftCall | Large219 cu ftCall | Extra Large291 cu ftCall | |||
| Latex balloons | ||||||||
| 5 in latex (garland accents) | 0.06 cu ft | 550 | 1,000 | 1,500 | 1,833 | 3,650 | 4,850 | a few hours |
| 9 in latex | 0.25 cu ft | 132 | 240 | 360 | 440 | 876 | 1,164 | 8 to 16 hours |
| 10 in latex | 0.3 cu ft | 110 | 200 | 300 | 366 | 730 | 970 | 8 to 16 hours |
| 11 in latex (standard) | 0.5 cu ft | 66 | 120 | 180 | 220 | 438 | 582 | 12 to 24 hours |
| 12 in latex | 0.55 cu ft | 60 | 109 | 163 | 200 | 398 | 529 | 12 to 24 hours |
| 14 in latex | 1 cu ft | 33 | 60 | 90 | 110 | 219 | 291 | about 24 hours |
| 16 in latex | 1.5 cu ft | 22 | 40 | 60 | 73 | 146 | 194 | 30 hours or more |
| 18 in latex | 2 cu ft | 16 | 30 | 45 | 55 | 109 | 145 | 36 hours or more |
| 24 in latex (jumbo) | 5 cu ft | 6 | 12 | 18 | 22 | 43 | 58 | 2 to 4 days |
| 30 in latex | 8 cu ft | 4 | 7 | 11 | 13 | 27 | 36 | 2 to 4 days |
| 36 in latex (3 ft giant) | 15 cu ft | 2 | 4 | 6 | 7 | 14 | 19 | 2 to 4 days |
| Specialty latex | ||||||||
| 11 in chrome or metallic latex | 0.5 cu ft | 66 | 120 | 180 | 220 | 438 | 582 | 12 to 18 hours |
| 11 in confetti latex | 0.5 cu ft | 66 | 120 | 180 | 220 | 438 | 582 | 12 to 18 hours |
| 11 in LED light-up latex | 0.5 cu ft | 66 | 120 | 180 | 220 | 438 | 582 | 12 to 18 hours |
| Foil balloons | ||||||||
| 16 in foil Orbz or globe | 1.13 cu ft | 29 | 53 | 79 | 97 | 193 | 257 | 3 to 5 days or more |
| 18 in foil round, heart or star | 0.5 cu ft | 66 | 120 | 180 | 220 | 438 | 582 | 3 to 5 days or more |
| Foil junior shape (about 20 in) | 0.65 cu ft | 50 | 92 | 138 | 169 | 336 | 447 | 3 to 5 days or more |
| 28 in jumbo foil round, heart or star | 1.9 cu ft | 17 | 31 | 47 | 57 | 115 | 153 | 3 to 5 days or more |
| 32 in jumbo foil heart or star | 2.65 cu ft | 12 | 22 | 33 | 41 | 82 | 109 | 3 to 5 days or more |
| 34 in foil number or letter | 1.4 cu ft | 23 | 42 | 64 | 78 | 156 | 207 | 3 to 5 days or more |
| Foil SuperShape (large character) | 1.4 cu ft | 23 | 42 | 64 | 78 | 156 | 207 | 3 to 5 days or more |
| 36 in jumbo foil round | 4.4 cu ft | 7 | 13 | 20 | 25 | 49 | 66 | 3 to 5 days or more |
| 40 in foil number or letter | 2 cu ft | 16 | 30 | 45 | 55 | 109 | 145 | 3 to 5 days or more |
| ⚠ Air-fill only: 9 to 14 inch foil shapes and 16 inch foil letters and numbers do not float with helium. Use them on sticks, cake toppers or garlands. | ||||||||
| Bubble balloons | ||||||||
| 20 in bubble | 0.7 cu ft | 47 | 85 | 128 | 157 | 312 | 415 | 3 to 5 days or more |
| 22 in bubble | 1 cu ft | 33 | 60 | 90 | 110 | 219 | 291 | 3 to 5 days or more |
| 24 in double bubble | 1.2 cu ft | 27 | 50 | 75 | 91 | 182 | 242 | 3 to 5 days or more |
How to read it: find your balloon, then read across to the first tank at or above your count. Each number is for one balloon size and a full tank; leave about 10% extra for pops and fuller fills. Mixing sizes? The calculator adds them for you.
Helium per balloon follows the balloon makers’ fill charts (the Qualatex helium chart and Anagram). Foil numbers and letters are flat, so they take much less helium than a round balloon of the same height. Float times are typical indoors without Hi-Float (see how long helium balloons last); heat, cold and wind shorten them. 100 standard 11 inch latex balloons take about 50 cubic feet, so the Extra Small tank (60 cu ft) covers them.
Prices: the Tiny tank is $195, Extra Small 5 and Small 5, each with the regulator and a full 7 days. The Medium, Large and Extra Large tanks are quoted by phone. See all sizes on the helium tank rental page.
Typical counts we see at parties, so you can estimate before you add them to the calculator.
Birthday Bouquet
5 to 12 balloons, about 3 to 6 cu ft.
6 ft Balloon Arch
60 to 80 balloons, about 30 to 40 cu ft.
12 ft Balloon Arch
130 to 160 balloons, about 65 to 80 cu ft.
Table Centerpieces
5 to 7 balloons per table.
Ceiling Balloons
About 25 balloons per 50 sq ft of ceiling.
From thousands of balloons filled at our events: three things that keep your order right.
Not sure what your order needs? Call (718) 787-4477 or send us a text with the balloon sizes and counts, and we pick the tank for you.
Every tank comes with a regulator and a full 7 days, no deposit. We deliver and pick up the empty; delivery is priced by distance.
A birthday bouquet or a few tables
Delivery priced by distance
100 standard balloons and more
Delivery priced by distance
Balloon arches and graduations
Delivery priced by distance
110, 219 and 291 cu ft tanks
Delivery priced by distance
Rather not fill them yourself? We fill the balloons at our store or at your venue. See balloon inflation.
It depends on the tank and the balloon size. With standard 11 inch latex balloons, the Tiny tank (33 cu ft) fills about 66, the Extra Small (60 cu ft) about 120, the Small (90 cu ft) about 180, the Medium (110 cu ft) about 220, the Large (219 cu ft) about 438 and the Extra Large (291 cu ft) about 582.
About 50 cubic feet for 100 standard 11 inch latex balloons, and about 55 for 12 inch. The Extra Small tank (60 cu ft, $285) covers it. Foil and bigger latex balloons take more, so add them in the calculator.
No. Foil balloons smaller than about 18 inches, such as 9, 10, 12 and 14 inch foil shapes and 16 inch foil letters and numbers, are air-fill only. They hold so little helium that the lift cannot carry the weight of the foil and seams, so they sit on the table instead of floating. Use them on sticks, as cake toppers or taped into garlands and walls. Helium foil starts at about 18 inches. The one smaller foil that floats is the 16 inch Orbz globe, because it is a full round ball.
A 9 inch latex takes about 0.25 cubic feet, an 11 inch about 0.5, a 16 inch about 1.5 and a 36 inch giant about 15. An 18 inch foil balloon takes about 0.5 cubic feet. These figures come from the Qualatex helium chart, the fill chart balloon professionals use.
Less than most people think. An 18 inch foil round, heart or star takes about 0.5 cubic feet, the same as an 11 inch latex. A 34 inch foil number takes about 1.4 cubic feet and a 40 inch number about 2, because foil numbers are flat. A 36 inch jumbo round takes about 4.4. Foil smaller than about 18 inches is air-fill only. See the helium and weight chart for more shapes, or add your foil balloons to the helium balloon calculator.
A 6 ft arch uses 60 to 80 balloons, about 30 to 40 cubic feet, so the Extra Small tank fits. A 12 ft arch uses 130 to 160 balloons, about 65 to 80 cubic feet, so the Small tank (90 cu ft) fits.
Latex balloons float about 12 to 24 hours indoors, or 2 to 4 days with Hi-Float treatment. Foil balloons float 3 to 5 days or more. Bigger latex balloons float longer than small ones. Giant balloons are best filled on site, close to the event.
Yes. Add about 10% to your total. Balloons vary in size, and a few always pop or need a top-up, especially in arches and ceilings.
For a few dozen balloons, having us fill them saves you the work. For larger orders and do-it-yourself decor, a helium tank rental gives you the helium to fill everything on your own schedule for 7 days.
Yes. We deliver helium tanks across New York, New Jersey, Connecticut and Pennsylvania, with the regulator, and pick up the empty. Delivery is priced by distance, or you can pick the tank up in Brooklyn.
Yes. It is free with no sign-up. It shows the helium you need and the tank that fits, with the price for the three smaller tanks; the larger tanks are quoted by phone.
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