Surfboard cover
size guide
Canvas covers and zipperless bags. Every chart, plus a calculator that does the maths for you.
Tell us your surfboard's dimensions.
Length, width and thickness. We'll match you to the right canvas cover and zipperless bag in one go.
Understanding your surfboards dimensions
We cut and sew every canvas cover to your exact surfboard length — that's the easy part. The only question is width. Your surfboard's widest point needs to fit inside the cover's maximum.
Check the underside, near the tail
Most shapers print the dimensions on the bottom of the surfboard, just up from the fins along the stringer.
Two ways to size it
The Boardsox Surfboard
Bag Calculator
Sarah built a smart calculator. Tell it your surfboard's length, width and thickness and it tells you exactly which cover to grab.
Open the calculatorMeasure rail to rail
One measurement captures width and thickness together — because it goes over the deck, not just across the flat.
Board deck-up. Tape on the middle of the left rail.
Run it up and over the deck, across the thickest point, to the middle of the right rail.
Read the number. Match it to the charts below — it must be under the cap.
Know your three numbers
Every board has its dimensions printed on the underside near the fins. You need all three.
Length
Nose to tail, e.g. 6'0". Easy — we make every cover to your exact length.
Width
Across the widest point, e.g. 21". This decides which cover style you need.
Thickness
Through the middle, e.g. 2½". A thicker board needs more room inside the cover.
Watch it done
How to measure your surfboard
The rail-to-rail method in real life — tape on, over the deck, read the number.
New to surfboard dimensions?
A quick run through length, width, thickness and why they matter for your cover fit.
Our bags are.
Length is the easy part. We make every cover to order, so we'll match your surfboard's length no matter what. The real question is whether your surfboard fits inside — and that comes down to width and thickness together.
A flat bag has to wrap around a 3D surfboard. That's why rail-to-rail is the number that counts — it captures both in one go. Use the quick-check below or the calculator at the top of the page.
Find your cover size
Two ranges, two charts. Open the one you're shopping.
Canvas coversMade to order length. Width decides your style.
Board type quick reference
| Board type | Typical length | Canvas style | Max width |
|---|---|---|---|
| Groveller / shortboard | up to 6'4" | Shortboard | under 22" |
| Fish & hybrid | 5'4"–6'6" | Shortboard or Funboard | up to 24" |
| Mid-length / funboard | 6'6"–7'6" | Funboard | up to 24" |
| Gun / step-up | 7'0"–9'0" | Longboard | up to 25" |
| Longboard / log / Malibu | 8'0"–9'6"+ | Longboard | up to 25" |
Over 25" wide? Get in touch with your dimensions — we'll look at a custom cover.
What size and style canvas cover do I need?
Tell us your surfboard's length, width and thickness and we'll match you to the right canvas style.
Zipperless coversThree styles, set sizes. Width is fixed per style.
Three covers, set sizes — pick one long enough for your surfboard AND wide enough. The Easy Wing rolling tail adds a few inches of length tolerance, but width is fixed per style.
All covers: 14oz canvas · 5mm high-density foam · 3D moulded rails · padded nose · ventilated shoulder strap.
| Cover | Bag size | Fits boards up to | Max board width |
|---|---|---|---|
| Fun & Fish | 5'8" | ~6'0" | up to 24" ≈61 cm |
| 6'0" | ~6'2" | ||
| 6'3" | ~6'5" | ||
| 6'7" | ~6'9" | ||
| Shortboard | 6'0" | ~6'2" | under 22" ≈56 cm |
| 6'3" | ~6'5" | ||
| 6'7" | ~6'9" | ||
| 7'0" | ~7'2" | ||
| Longboard | 8'0" | ~8'2" | up to 26" ≈66 cm |
| 8'6" | ~8'8" | ||
| 9'2" | ~9'4" | ||
| 9'6" | ~9'8" |
What size and style zipperless cover do I need?
Tell us your surfboard's length, width and thickness and we'll match you to the right bag size.
Cover sizing FAQ
I'm between two cover sizes — which do I pick?
Always size up. A slightly larger cover cinches down snug; one that's too short won't fit at all. Width and thickness matter too — wide fish and thick logs should size up.
Will a shortboard cover fit my fish?
Often, but fish can be surprisingly wide for their length. Check the width against the cover — when in doubt, use the calculator above or send us your dims.
What does the Easy Wing closure do for length?
It adds a few inches of tolerance. A 6'3" bag comfortably takes a 6'5" board — the rolling tail closes neatly over any extra length. Width is fixed per style, though.
My board is wider than 25" — what now?
Send us your dimensions at support@boardsox.com.au and we'll look at a custom cover.
What if I order the wrong size?
No stress. See our returns & exchanges page — we'll swap it for the right size. We'd rather you love it.