What Is a 3/4 Size Guitar Case?
Updated Nov 13, 2026 · By 
Jonah Mercer · Editorial policy
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A 3/4 size guitar case is a case built for a 3/4 size guitar, a smaller instrument than a full-size 4/4 guitar. The case matches the smaller body and shorter overall length, so the guitar sits snug instead of sliding around inside a full-size case. Measure the guitar first, then match the case interior to those measurements.
What 3/4 size means
Instrument sizes use fractions of a full-size 4/4 instrument: 3/4, 1/2 and 1/4 mark smaller sizes, and 3/4 sits between 1/2 and 4/4. A 3/4 size guitar has a shorter overall length and a smaller body than a 4/4 guitar, so its case is shorter and narrower too. The fraction names the size class, not an exact length, so 3/4 guitars can still measure differently.
Measure the guitar first
Measure the overall length from the end of the body to the tip of the headstock, then measure the body length and the lower bout width. Write the measurements down, then compare them with the interior dimensions the case lists. A case fits when the interior length clears the guitar length and the body width clears the lower bout.
Check the case interior
A gig bag lists interior dimensions for overall length, body length and bout widths. The Gator case lists 40.3 in overall length with a 20 in body and a 14.9 in lower bout, and the Wayfinder case lists 41 in overall length with a 20 in body and a 14 in lower bout. The CAHAYA cases fit 40 in electric guitars. Match the interior numbers to the guitar measurements before buying.
Padding, straps and pockets
Padding is listed in millimetres or inches: the Gator case has 10 mm padding and the CAHAYA CY0226 case has 6 mm padding. Backpack straps come on the cases in this guide, and each case has a front pocket for sheets, strings and small parts. The CAHAYA cases add a neck strap that holds the guitar in place, and the Gator and CAHAYA cases reinforce the headstock area.
What does not fit
A case that is too short leaves the headstock pressed against the end, and a case that is too narrow squeezes the body. The CAHAYA cases state they are too short for an electric bass guitar, so do not buy one for a bass. Check the overall length first: a 40 in case suits a 40 in electric guitar, and a shorter guitar needs a shorter case.
What you need
CAHAYA Electric Guitar Case 0.35in Padded Soft
A padded gig bag for 40 in electric guitars with 6 mm padding, backpack straps, a neck strap and a large front pocket, sized 40.9 by 15.5 by 2.7 in.
- Padding: 6 mm
- Backpack straps
- Fits: Electric
Gator Cases Foam Padded Electric Guitar Gig
A foam padded gig bag for Stratocaster and Telecaster style guitars up to 40.3 in long, with 10 mm padding, a reinforced headstock and backpack straps.
- Padding: 10 mm
- Backpack straps
- Fits: Electric
- 2-year warranty stated
Wayfinder Standard Lightweight Electric Guitar Gig Bag
A lightweight gig bag for standard electric guitars with adjustable backpack straps, a large zippered front pocket and interior length of 41 in.
- Backpack straps
- Fits: Electric
CAHAYA Electric Guitar Bag 0.3in Padded Gig
A lightweight gig bag for 40 in electric guitars with 0.3 in padding, a neck strap, a large front pocket and backpack straps.
- Backpack straps
- Fits: Electric
These come from our ranked list Best Gig Bag, which compares them spec by spec.
Frequently asked questions
Will a 3/4 guitar fit in a full-size case?
It may sit loose, since a full-size case is built for a longer guitar with a wider body. Measure the guitar and match the case interior to those measurements, so the guitar stays put inside the case.
How do I measure a guitar for a case?
Measure the overall length from the end of the body to the tip of the headstock, then the body length and the lower bout width. Compare those measurements with the interior dimensions the case lists.
Do these cases fit an electric bass?
No. The CAHAYA cases state they are too short for an electric bass guitar. The Gator and Wayfinder cases list electric guitars only, so check the interior length before buying for any other instrument.
Ranked guitar cases lists
More how-to guides
Product details come from each Amazon listing and can change. Check the listing before you buy.