An “88-key” dust cover can still be too shallow for an 88-key piano. The music rest, projecting plugs and controls all change what the fabric has to pass over. Before choosing a cover, decide what you want to leave assembled between sessions.
Start with the exact instrument model and its body dimensions. A named-model cover gives you a useful starting point; a stretch cover needs enough information about its usable shape. Below are four current options, two worked examples and a free measurement sheet. These are specification comparisons, not hands-on fit or fabric tests.
Measure the body, then the things attached to it
You need a tape measure, the instrument's model name and a note of how it normally sits when switched off. Measure while it is secure on its proper stand. There is no reason to lift a heavy keyboard just to read an underside label if the model is already on the panel or in your purchase record.
Start with the rectangular space occupied by the instrument itself. The height is measured from the bottom of the keyboard body, not from the floor. Include end cheeks and any controls that rise above the main panel. Use one unit throughout; one inch is exactly 2.54cm.
- W · Width
- Outer edge to outer edge, including any end panels.
- D · Depth
- Front to rear of the body. Record a projecting rest or rear plug separately.
- H · Height
- Bottom of the body to its highest point, including raised controls.
- C / R · Attached items
- Rear cable projection and rest height above the body. A rest may also add depth.
A maker may describe the same long dimension as “length” rather than “width.” Match the direction, not just the letter. Also check whether the listing describes usable internal space, an unstretched piece of fabric, an exterior measurement or a shipping carton. Those numbers cannot be substituted for one another.
Do not add a standard sewing allowance yourself. A custom maker may already include the ease it needs. Send the actual equipment dimensions and ask how they are translated into the finished cover.
Choose a music-rest and cable arrangement
There are three different arrangements to consider. You can remove the rest, leave it protruding through a purpose-made opening, or enclose the whole rest. The last option needs a much taller cover; the middle one leaves the rest itself exposed.
With an opening, measure the connecting base and its position along the back edge. A slot wide enough for the base may still be in the wrong place for another model. With full enclosure, measure to the highest point and the furthest rear projection of the installed rest. Remove loose scores and tablets before covering.
Look behind the keyboard as well. A straight USB plug or audio connector may extend further than the power plug. Record the cable's natural route without pressing it against the case or forcing a tighter bend. A rear opening may accommodate it better than a longer closed cover, but that depends on the opening's actual location.
A drawstring should not tighten around a lead or pull a connector sideways. If a cover requires disconnecting something, follow the instrument's shutdown and connection instructions. Our sustain-pedal comparison covers another accessory where connector type and cable routing matter.
Four covers, with different fit questions
The useful distinction is how each cover accommodates the instrument. We have included a basic stretch cover, a shaped cover with a music-rest opening, a made-to-model option and a widely sold stretch model with unresolved size information.
Affiliate notice: Some links are paid links. As an Amazon Associate, we earn from qualifying purchases.
On-Stage KDA7088B: a basic stretch option
The KDA7088B uses spandex, a cinch cord with a lock and an integrated storage bag. On-Stage gives approximately 74 × 26 inches as maximum dimensions. That converts to 187.96 × 66.04cm, but the page does not define a usable three-dimensional envelope or a maximum covered height.
That makes it a reasonable inexpensive cover to investigate for a straightforward setup with the rest removed. It does not establish that it will wrap around a tall rest or leave plugged-in leads untouched. Obtain confirmation for your assembled measurements if those are requirements.
For price context, B&H listed the black KDA7088B at US $24.95 when checked. Its 7 × 4.5 × 3.5-inch box dimensions describe the packaged item, not a keyboard it can cover. The live Amazon offer above is separate.
Clairevoire GA125: a shaped cover with a rest opening
The Clairevoire GA125 lists the Yamaha P-125a and excludes the DGX series. Classic Ebony Black has a fabric outer layer and nylon lining; check other material options separately.
The page gives a 133 × 30cm footprint and a 61cm music-rest opening, intended for the rest's connecting base. The rest stands outside the cover. Clairevoire recommends fitting the cover before installing it.
Rear plugs, contact material and your rest still need checking. The black fabric option displayed €58.95 in our EUR storefront session; confirm currency, delivery and tax at checkout.
DigitalDeckCovers DGX-670B: made for the named model
DigitalDeckCovers lists a cover specifically for the Yamaha DGX-670B, starting at US $64.99. Black cotton is a no-surcharge choice in its selector. The cover has an open bottom and slips over the instrument; fabric choices include other materials and priced upgrades.
The listing does not settle whether your raised music rest or connected rear plugs are included in its pattern. For this purchase, send the model and the configuration you intend to leave assembled. Ask for confirmation before placing a made-to-order request.
The maker's delivery information allows approximately seven business days to make and dispatch a cover, before transit. Destination-based shipping is additional. Treat this as a planned purchase, especially if you need it by a particular date.
Gator GKC-1648: clarify the dimensions first
Gator's Lycra/spandex cover has an adjustable shock cord. However, its current product page says keyboards up to 48 × 16 inches in the feature list, while both dimension tabs show 59.1 × 23 × 7 inches. These are substantially different figures, not a small conversion discrepancy.
The first pair is about 121.9 × 40.6cm; the three-dimensional set is about 150.1 × 58.4 × 17.8cm. We cannot establish from that page which figures describe a safely usable fit. Neither example below is cleared for this cover. Ask Gator to resolve the specification for your model before ordering.
Sweetwater listed the GKC-1648 at US $19.99. A low price does not remove the need to answer that sizing question.
Two 88-key pianos, two different envelopes
The body measurements below come from Yamaha's specifications. The cable projections and rest rises are invented allowances for illustrating the calculation, not measurements of Yamaha's supplied accessories. Replace them with measurements of your own setup.
Example 1: Yamaha P-125a
Yamaha lists the P-125a body as 132.6cm wide, 29.5cm deep and 16.6cm high. With the rest removed and cables outside the cover, those are the starting body dimensions. Its width is approximately 52.20 inches.
Illustrative rear plug: 29.5 + 3 = 32.5cm depth
Illustrative rest rise: 16.6 + 20 = 36.6cm height
If both additions must be enclosed, the starting envelope becomes 132.6 × 32.5 × 36.6cm, before any extra depth caused by the rest. That is very different from the bare body.
Plausible candidate: GA125, because Clairevoire names the P-125a and provides a rest opening. That is a different arrangement from enclosing the 36.6cm-tall example. Its nominal 30cm depth is not evidence that a closed rear can surround our illustrative 32.5cm body-plus-plug depth. Confirm how the back edge handles the lead.
Example 2: Yamaha DGX-670
The DGX-670 body is 139.7cm wide, 44.5cm deep and 15.1cm high. It is only 7.1cm wider than the P-125a but 15cm deeper. Both have 88 keys.
Illustrative rear plug: 44.5 + 4 = 48.5cm depth
Illustrative rest rise: 15.1 + 25 = 40.1cm height
With those assumed additions enclosed, allow for an envelope starting at 139.7 × 48.5 × 40.1cm, plus any further rest projection. With the rest removed, the height returns to the body measurement; the cable question remains.
Excluded: the GA125, whose maker explicitly excludes DGX instruments. Its small-piano footprint is also substantially shallower. The DigitalDeckCovers DGX-670B listing is a more appropriate model-specific enquiry, with rest and cable arrangements still to confirm. There is no reason to force the smaller cover over this body.
The same method applies when moving between brands. Start a new measurement row for a new instrument. Keeping the same number of keys does not make an old cover compatible.
Compare the whole order, including unknown costs
These are dated reference prices from the named non-Amazon sources, checked on 16 October 2026. USD listings are US item prices before applicable tax and delivery. The Clairevoire figure is the displayed EUR storefront price; its destination-specific tax and shipping breakdown was not verified. They are not currency-converted price rankings.
| Exact option | Reference item price | Still needed for an order total |
|---|---|---|
| On-Stage KDA7088B, black | US $24.95, B&H | Address-specific tax and delivery; confirm assembled fit. |
| Clairevoire GA125, Classic Ebony Black | €58.95, maker's EUR storefront | Currency, destination delivery/tax and rear-opening confirmation. |
| DigitalDeckCovers DGX-670B, black cotton | US $64.99, maker | Delivery, applicable tax, any agreed pattern alteration and its cost. |
| Gator GKC-1648 | US $19.99, Sweetwater | Tax/delivery and a resolved fit specification before purchase. |
For these basic dust-cover purchases, no separate mount, power supply or subscription is required. The examples assume you already own the piano, its stand and a suitable measuring tape. Required alterations, if any, belong in the quote; premium fabric is an optional upgrade, not an assumed essential.
We have not obtained address-specific checkout totals. Write down item price + necessary alterations + delivery + applicable tax or duties before comparing a local stock item with an imported or made-to-order one. Check the return or alteration terms, particularly when the maker works from measurements you supply.
A useful question is more precise than “will this fit my piano?” Copy and adapt this:
Instrument: [exact model] Body: [W] × [D] × [H] cm Music rest: [removed / through an opening / enclosed] Rear cables: [locations and natural projection] Does this exact cover/material accommodate that arrangement? What will touch the finish, and where does the closure sit? Please confirm the finished fit, total cost and alteration/return terms.
Fabric contact, ventilation and everyday use
Check the instrument's care instructions before choosing a lining. The P-125a manual warns that vinyl, plastic or rubber objects can discolour the instrument. That is a reason to investigate the contact layer rather than selecting a cover solely for a “waterproof” label. Cotton or a fabric description alone is not a tested guarantee of finish compatibility either.
For the DGX-670, the manual’s safety instructions say to keep ventilation openings clear and protect power leads from pinching. Switch off before covering; do not drape fabric over operating equipment or its power adaptor. Remove the cover completely before playing. A fold-back design does not establish that leaving the rest of the panel covered is suitable for your instrument.
Before fitting it, remove headphones, loose pencils and anything resting on the keys. Ease the cover into place without dragging a cord lock across the panel or leaning on the keyboard. If it presses controls, strains at a corner or tugs a connector, stop and reassess the fit. Do not solve a tight fit by pulling harder.
Follow the cover's own cleaning label, and let it dry fully away from the instrument. Do not apply household cleaners to a piano because they are suitable for the fabric. Yamaha's P-125a instructions specify a soft dry or slightly damp cloth for the instrument and exclude alcohol, solvents and cleaning fluids.
An indoor fabric cover is not a load-bearing shelf, a way to make a piano pet-proof or a substitute for transport protection. Keep drinks away. For carrying the instrument, our keyboard gig-bag and case guide addresses padding, handles and transport dimensions separately.
Download the measurement sheet
The printable pack has a blank worksheet and the two examples above. The CSVs are editable tables you can open in a spreadsheet app; they contain no formulas and do not calculate fit automatically. Recalculate any example totals when changing its inputs.
Free to copy and adapt. Use your own accessory measurements; the example rest and cable allowances are hypothetical.
Keep the completed sheet with the cover's order confirmation. If the piano moves to another stand, gains an audio cable or acquires a different music rest, you will know which part of the fit needs checking again.
