Cellos are made in many different sizes, with the 4/4 (full size), 3/4, 1/2, and 1/4 sizes being the most common. Most adults play the 4/4 cello, though a 7/8 size does exist for adults who have a hard time playing the full sized instrument.
Please note that this information is provided as a free service and without warranty or liability. There are different methods of sizing a cello, so if your teacher has a recommendation, you should follow your teacher's advice.
If you have access to cellos of different sizes, it is recommended that you follow this process to determine which cello is right for you.
You can achieve a very close approximation using three measurements.
These measurements will provide a general guide. You may end up in two different ranges, depending on the method used. If in doubt, consult your teacher.
The charts below show the comfortable ranges for each cello size, measured three different ways (see above).
If you do not have access to an instrument and measurements are not available, you can approximate the cello size by using a child's age. This is not the most accurate system, as some children will be large or small for their age. This chart is intended to give you a general idea only.