Determine corner radius and size correctly
How to find the right dimensions for your hot tub cover
When you measure length and width, give us the dimensions in centimetres and always round up to the next centimetre. When measuring, a little too much is better than a little too little. One centimetre too much makes no big difference – the cover will still fit. One centimetre too little, and the cover won't fit at all.
Classic hot tub
Measure at the widest point of the acrylic rim, as shown by the arrows.
Hot tub with rail ring
Measure at the widest point of the rail, as shown by the arrows.
Measuring the corner radius correctly
Most importantly: do NOT choose a radius that is too large. If you measure the radius too large, the cover will NOT cover the corner. If you measure it rather too small, that's no problem. The cover may then overhang a little, which is barely noticeable. So if in doubt, measure a little smaller.
How it works
The radius is the measurement from the point of the extended corner to where the curve begins.
If you don't have a square to hand, use a wooden batten, cardboard or similar and measure the distance with a tape measure or ruler.
New: With our corner radius calculator you can easily determine the radius from a photo. Upload a photo taken from above, enter width and depth, done.
Radius template to download
Download radius template (PDF, 789 KB)
Print the PDF on A4 and hold it against your hot tub to determine the radius.
