Streamer Calculator — Rolls of Streamers Needed
Estimate how many rolls of streamers you need for party decorations based on your room size and style.
Room length
Room width
Streamer style
Unit price for cost estimation
Extra for trimming and wastage
How We Calculate This
This calculator estimates streamer quantities based on room dimensions and decoration style.
The formula
Ceiling drapes: Streamers every 30cm across the width, running the full length of the room.
Wall streamers: Room perimeter multiplied by ceiling height (2.5m assumed).
Backdrop: Width multiplied by height (2m) multiplied by 5 for layered density.
Each standard roll is 10 metres. A 15% extra allowance covers trimming and wastage.
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Adjust quantities based on your guests and event type.