Helium Information

Helium is used to make balloons float. Helium balloon gas is a safe, non-flammable, non-toxic gas which is lighter than air. It can be used safely either indoors or outdoors, provided appropriate care and attention is taken.

Helium Safety Advice

  • NEVER INHALE HELIUM. IT CAN CAUSE SUFFOCATION AND IN EXTREME CASES DEATH.
  • NEVER drag a cylinder along the ground.
  • Use cylinders in an upright position and secure them to prevent toppling.
  • Do not attempt to catch a falling cylinder; move out of the way.
  • The valve on high-pressure balloon gas cylinders should never be opened unless the appropriate filling kit is attached.
  • Keep the cylinder in a well ventilated area away from fire risk and sources of heat. Do not store in damp areas.
  • Always secure cylinders if transporting them and keep them ventilated.
  • Always remove the filling kit if transporting them.
  • Remember to turn off the cylinder valve (on top of the tank) before attempting to remove the filling kit.
  • Never allow children or unauthorised persons to handle or use the tanks.
  • Always use a trolley for moving large cylinders of helium.
  • Never use equipment which may be damaged.
  • Never attempt to repair a helium tank or inflation equipment that you think may be damaged.
  • When inflating balloons, point the filling kit/inflator away from you.
  • When inflating large balloons, you may wish to use eye protection in case of bursting.
For more information refer to the "Helium Safety Data Sheet".

Rental Helium Cylinders

NameMaxiMidiMini
Size X30S X20W X10W
Contents 7.82m3 5.21m3 2.61m3
Weight 49kg 25kg 12kg
Height 1050mm 870mm 655mm
Diameter 230mm 203mm 176mm
Balloon TypeNumber of balloons filled per cylinder
9" Latex 935 620 310
10" Latex 860 575 290
11" Latex 605 400 200
12" Latex 495 330 165
16" Latex 195 130 65
18" Foil 535 360 180

Helium Balloon Capacity & Float Times

The listed average inflation sizes, flying times, and numbers of balloons per helium tank are conservative averages. Actual flying times may vary depending on temperature and atmospheric conditions.

Latex & Cloudbuster Balloon Helium Chart

Balloon TypeInflated DiameterLift AbilityGas CapacityAvg. # per 242ft3 tankAvg. Float Time*
5" (13cm) Round 5" (13cm) N/A 0.06 cu ft (.002m3) N/A N/A
9" (23cm) Round 9" (23cm) 0.2 oz. (6g) 0.25 cu ft (.007m3) 900 12-16 hours
11" (28cm) Standard & Special Colors 11" (28cm) 0.35 oz. (10g) 0.5 cu ft (.015m3) 484 18-24 hours
11" (28cm) Metallic & Pearl Colors 11" (28cm) 0.35 oz. (10g) 0.5 cu ft (.015m3) 484 16-18 hours
16" (41cm) Round 16" (41cm) 1.2 oz. (34g) 1.5 cu ft (.042m3) 160 30+ hours
18" (46cm) Round 18" (46cm) 1.8 oz. (51g) 2 cu ft (.056m3) 121 36+ hours
24" (61cm) Round 24" (61cm) 4 oz. (120g) 5 cu ft (.142m3) 48 2-4 days
6" (15cm) Heart 6" (15cm) N/A 0.05 cu ft (.002m3) N/A N/A
11" (28cm) Heart 11" (28cm) 0.1 oz. (3g) 0.3 cu ft (.009m3) 806 8 hours
15" (38cm) Heart 15" (38cm) 0.4 oz. (11g) 0.61 cu ft (0.020m3) 396 12 hours
3' (.9m) Heart 3' (91cm) 6 oz. (168g) 7 cu ft (.198m3) 34 3-5 days
12" (38cm) Quick Link 12" (31cm) 0.5 oz. (14g) 0.6 cu ft (0.02m3) 396 12+ hours
16" (41cm) GEO Donut® 16" (41cm) 0.5 oz. (14g) 0.7 cu ft (.020m3) 345 22-26 hours
16" (41cm) GEO Blossom® 16" (41cm) 0.4 oz. (11g) 0.6 cu ft (.017m3) 403 18-24 hours
30" (76cm) Metallic & Pearl Colors 30" (76cm) 6.5 oz. (184g) 8 cu ft (.226m3) 30 3-5 days
3' (.9m) Giant (inflated to 2.5') 2.5' (76cm) 6.5 oz. (184g) 8 cu ft (.226m3) 30 3-5 days
3' (.9m) Giant (inflated to 3.0') 3.0' (91cm) 12 oz. (339g) 15 cu ft (.425m3) 16 3-5 days
4' (1.2m) Cloudbuster** 4' (1.2m) 1.7 lb. (771g) 34 cu ft (0.963m3) 7 4-5 days
5.5' (1.7m) Cloudbuster** 5.5' (1.7m) 4.7 lb. (2.13kg) 66 cu ft (1.868m3) 4 8 days
8' (2.4m) Cloudbuster** 8' (2.4m) 15.5 lb. (7.03kg) 267 cu ft (7.561m3) 1 18 days
*The use of ULTRA HI FLOAT® balloon flight extender is recommended for all helium filled balloons. ULTRA HI FLOAT can extend flying times of latex balloons up to 25 times longer than untreated balloons. **Because the filling and usage of display balloons is beyond our control, no performance or longevity guarantee can be made.

Ultra Hi Float®

We recommend applying Ultra Hi Float to latex balloons. Ultra Hi Float can increase flying times by up to 25 times. Hi Float is available for purchase in our Balloon Decorating section.

Foil Balloon Helium Chart

Balloon DescriptionInflated Size</th>(Width x Height)Lift AbilityGas CapacityAvg. # per 242ft3 tank
18" (46cm) Heart 14"x 13" 36cm x 33cm 0.1 oz. (2g) 0.5 cu ft (.014m3) 484
18" (46cm) Round 13.5"x 13.5" 34cm x 34cm 0.1 oz. (2g) 0.5 cu ft (.014m3) 484
18" (46cm) Square 13"x 13" 33cm x 33cm 0.1 oz. (3.5g) 0.6 cu ft (.017m3) 403
18" (46cm) Diamond 18" x 17" 46cm x 43cm 0.14 oz. (4.06g) 0.54 cu ft (0.015m3) 448
20" (51cm) Star 18" x 18" 46cm x 45cm 0.1 oz. (3g) 0.6 cu ft (.017m3) 403
24" (61cm) Round Crystal 24" x 23" 61cm x 58cm 0.5 oz. (12.9g) 1 cu ft (.03m3) 231
24" (61cm) Heart Crystal 24" x 23" 61cm x 58cm 0.4 oz. (11.8g) 1 cu ft (.028m3) 244
31" (79cm) Round 24" x 24" 61cm x 61cm 1.5 oz. (43.6g) 1.6 cu ft (.045m3) 151
34" (86cm) Diamond 28" x 28" 71cm x 71cm 1.5 oz. (43.7g) 1.5 cu ft (.042m3) 161
36" (91cm) Heart 27.5"x 27" 70cm x 69cm 1.9 oz. (53g) 4 cu ft (.113m3) 61
36" (91cm) Round 27"x 27" 69cm x 69cm 2.3 oz. (66g) 4.4 cu ft (.125m3) 55
36" (91cm) Star 31.5"x 30" 80cm x 76cm 1.1 oz. (32g) 2.5 cu ft (.071m3) 97