Decorations Calculators
Plan balloons, bunting, fairy lights, centrepieces, and all the decorations for your celebration.
Balloon Calculator
Calculate how many balloons you need for your party venue, including latex, foil and helium options for any celebration. Free online calculator.
Bunting Calculator
Work out how many metres of bunting to buy for your party venue or garden based on the space you want to decorate. Free online calculator.
Streamer Calculator
Estimate how many rolls of streamers and crepe paper you need to decorate your party venue or celebration space. Free online calculator.
Table Decoration Calculator
Plan centrepieces, runners and table decorations for each table at your party or event. Get quantities right first time. Free calculator.
Confetti Calculator
Calculate how much confetti you need for your celebration, wedding send-off or party table scatter based on guest numbers. Free calculator.
Banner Calculator
Work out the right banner sizes and quantities to decorate your party venue, including happy birthday and custom message banners. Free calculator.
Fairy Light Calculator
Calculate how many metres of fairy lights you need to decorate your party venue, marquee or garden for a magical celebration. Free calculator.
Centrepiece Calculator
Plan centrepiece materials and quantities for each table at your event, from flowers and candles to themed displays. Free online calculator.
Balloon Arch Calculator
Estimate how many balloons you need to build a stunning balloon arch or garland for your party entrance or backdrop. Free online calculator.
Flower Arrangement Calculator
Calculate the number of stems, vases and arrangements needed for your party or event table decorations and displays. Free online calculator.
10 free calculators in Decorations
Decorating Your Party Venue
Decorations set the mood for any celebration. Whether you are going for elegant fairy lights and flower arrangements or fun balloons and streamers, getting the right quantities means your venue looks full without overspending.
For balloons, a good rule of thumb is 1-2 balloons per guest for a standard party, or significantly more if you are creating arches, garlands, or balloon walls. A standard balloon arch of 2.5m typically needs 100-150 balloons depending on sizes used.
Bunting should be measured in metres — you need more than you think, as it drapes and loops. Fairy lights work best at roughly 100 lights per metre of wall or surface you want to cover. Our calculators help you get precise quantities for your specific venue.