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Balloon Calculator

Calculate exactly how many balloons you need for arches, garlands, columns, walls, and bouquets.

Whether you’re building a balloon arch for a wedding entrance, filling a room for a birthday surprise, or figuring out how much helium you need for 200 balloons — this calculator gives you the exact count. Select your display type, enter your dimensions, and get a number you can actually order from. No guesswork, no running short on the day, no wasted inventory.

Select your display type below and enter your dimensions.

1

Select Your Project

Choose the calculator tab that matches your balloon project type.

2

Enter Dimensions

Input your measurements and select your preferred density or style.

3

Get Your Count

See exactly how many balloons you need, broken down by size.






Balloon Arch / Garland

Total length of your arch or garland



Mixed sizes create the organic look


Your Results

11-inch balloons
–
5-inch balloons
–
Total Balloons
–

Pro Tip: Order 10-15% extra balloons to account for pops and color matching. For outdoor events, increase your order by 20% as heat and sun increase breakage.

Balloon Column

Total height of the column


Your Results

Balloons per column
–
Number of columns
–
Total Balloons
–

Pro Tip: For spiral columns, use 2 contrasting colors. Standard columns use 11-inch balloons inflated to 10 inches for best stacking.

Balloon Wall / Backdrop




Your Results

Wall area
– sq ft
11-inch balloons
–
5-inch balloons
–
Total Balloons
–

Pro Tip: Balloon walls work best with a mix of 60% 11-inch and 40% 5-inch balloons. Use a balloon wall grid or attach to a frame for easier installation.

Helium Bouquets


Your Results

Latex balloons (11″)
–
Foil balloons (18″)
–
Balloon weights needed
–
Ribbon (approx.)
–
Total Balloons
–

Pro Tip: Use Hi-Float on latex balloons to extend float time from 12 hours to 24+ hours. For events, inflate bouquets as close to event time as possible.

Helium Tank Size


Your Results

Helium needed
– cu ft
Tanks Needed
Enter balloons to calculate

Pro Tip: We offer helium tank rentals with delivery anywhere within 150 miles of Memphis! Our 110 cu ft tank fills ~200 eleven-inch balloons. Our 219 cu ft tank fills ~400. Request a quote or call (901) 726-4460.

Display Type Guide

Not sure which calculator tab to use? Here’s a quick breakdown of each display type, typical balloon sizes, and the balloons-per-foot range you can expect.

Display Type Typical Balloon Size Balloons Per Foot (approx.)
Organic arch 11" 8–12
Structured arch 11" 6–8
Balloon garland 11" 6–10
Single balloon column 11" 4–6 per tier
Room fill (ceiling) 11" 1 per ~2 sq ft

Organic arches and garlands use the most balloons per foot because the clustered, asymmetrical look demands layering. Structured arches and columns are more predictable — uniform inflation, uniform spacing, uniform count. For room fills and ceiling drops, the math shifts from per-foot to per-square-foot.

Balloon Calculator FAQs


For a standard organic arch using 11-inch balloons, plan on 80–100 balloons. A structured arch with uniform sizing needs 60–75. The range depends on how full you want the arch to look and whether you’re mixing balloon sizes.


An arch is freestanding with a rigid frame (PVC or metal) and holds its curved shape on its own. A garland is flexible — it’s built on a decorating strip or fishing line and needs to be attached to a wall, table, or backdrop. Garlands drape naturally; arches hold geometry.


A 110 cubic foot tank fills approximately 200 eleven-inch latex balloons. A 219 cubic foot tank fills approximately 400. Foil balloons use less helium per balloon but are typically larger, so capacity depends on the foil balloon size. Use the Helium Tank tab above for exact counts.


The Helium Tank calculator supports 18-inch foil balloons. For arches, garlands, and columns, the calculators are optimized for latex balloons since foil balloons are rarely used in those display types. If you’re mixing foil accent balloons into a latex arch, calculate the latex count here and add foil accents separately.


Air-filled balloons (arches, garlands, columns on frames) can be built 1–3 days ahead — they last up to a week indoors. Helium-filled latex balloons should be inflated the day of your event, ideally 2–4 hours before. Helium foil balloons last 3–5 days, so you have more flexibility with those.


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