How to Use This Calculator
To calculate helium for 50 balloons: Select balloon size (e.g., 11 inches), enter quantity (50), and click calculate. The calculator will show you need 0.79 cubic meters of helium and recommend either 2 large disposable cylinders (£79) or 2 small refillable cylinders (£125.54 plus deposit).
Common Calculations
- 10 standard balloons (11"): 0.16m³ helium, 1 small disposable (£17.99)
- 50 standard balloons (11"): 0.79m³ helium, 2 large disposables (£79)
- 100 standard balloons (11"): 1.58m³ helium, 4 small refillables (£251)
Helium Calculator API
Endpoints
Calculate Helium
Input: {
"balloons": [
{"size": "11", "quantity": 100}
]
}
Output: {
"helium_m3": 1.575,
"helium_liters": 1575,
"helium_ft3": 55.62
}
Get Cylinder Recommendations
Input: {
"helium_m3": 1.575
}
Output: {
"disposable": {
"cylinders": [
{"id": "DISP33", "quantity": 3, "price": 39.50},
{"id": "DISP22", "quantity": 1, "price": 34.99},
{"id": "DISP095", "quantity": 1, "price": 17.99}
],
"total_cost": 171.48,
"per_balloon_cost": 1.71
},
"refillable": {
"cylinders": [
{"id": "REF2L", "quantity": 4, "price": 62.77}
],
"total_cost": 251.08,
"total_deposit": 100,
"per_balloon_cost": 2.51
}
}
Balloon Specifications
GET /api/balloon-specs
Response: {
"latex": {
"9": {"helium_m3": 0.007, "float_hours": 8},
"11": {"helium_m3": 0.015, "float_hours": 12},
"16": {"helium_m3": 0.042, "float_hours": 18}
},
"foil": {
"18": {"helium_m3": 0.014, "float_days": "3-5"}
}
}