Piano Sizes: Dimensions of Upright, Baby Grand, Grand and Digital Pianos
Floor space, height and weight for every type of piano, the keyboard width for 25 to 88 keys, and how much room a grand or an upright really needs once you add the bench and the player.
An upright piano is 36–60 in (91–152 cm) tall, about 56–61 in (142–155 cm) wide and 22–27 in (56–69 cm) deep. A grand piano is about 55–62 in (140–157 cm) wide and ranges from 4 ft 6 in (137 cm) long for a petite grand to about 9 ft (274 cm) for a concert grand; a baby grand is 5 ft–5 ft 6 in (152–168 cm). An 88-key keyboard is about 48 in (122 cm) across.
- Upright height
- 36–60 in (91–152 cm)
- Piano width
- ≈ 5 ft (142–157 cm)
- Baby grand length
- 5–5.5 ft (152–168 cm)
- Concert grand
- ≈ 9 ft (274 cm)
On this page
Grand piano sizes
A grand's size is its length, measured from the front edge of the keyboard to the farthest point of the tail with the lid closed. Width hardly changes with size, because every grand has to fit the same 88-key keyboard.
| Category | Length (ft and in) | Length (cm) | Typical weight |
|---|---|---|---|
| Petite grand | 4 ft 5 in–4 ft 11 in | 135–150 cm | 475–550 lb (215–250 kg) |
| Baby grand | 5 ft–5 ft 6 in | 152–168 cm | 500–650 lb (227–295 kg) |
| Medium (classic) grand | 5 ft 7 in–5 ft 11 in | 170–180 cm | 575–700 lb (260–318 kg) |
| Parlor or professional grand | 6 ft–6 ft 11 in | 183–211 cm | 650–800 lb (295–363 kg) |
| Semi-concert grand | 7 ft–7 ft 8 in | 213–234 cm | 750–900 lb (340–408 kg) |
| Concert grand | 8 ft 11 in–10 ft 1 in | 272–308 cm | 990 lb (450 kg) and up |
Category names are not standardized: one maker's "baby grand" can be another's "petite" or "medium". Compare actual lengths. All grands are about 55–62 in (140–157 cm) wide and about 39–41 in (99–104 cm) tall to the top of the closed lid.
Grand piano dimensions by model
| Model | Length (cm) | Length (ft and in) | Class |
|---|---|---|---|
| Yamaha GB1K | 151 cm | 4 ft 11 in | Petite |
| Steinway Model S | 155 cm | 5 ft 1 in | Baby grand |
| Yamaha C1X | 161 cm | 5 ft 3 in | Baby grand |
| Steinway Model M | 170 cm | 5 ft 7 in | Medium |
| Steinway Model O | 180 cm | 5 ft 10¾ in | Medium |
| Yamaha C3X | 186 cm | 6 ft 1 in | Professional |
| Steinway Model A | 188 cm | 6 ft 2 in | Professional |
| Steinway Model B | 211 cm | 6 ft 11 in | Professional |
| Yamaha C7X | 227 cm | 7 ft 5 in | Semi-concert |
| Steinway Model D | 274 cm | 8 ft 11¾ in | Concert |
| Yamaha CFX | 275 cm | 9 ft | Concert |
| Bösendorfer Imperial | 290 cm | 9 ft 6 in | Concert (97 keys) |
| Fazioli F308 | 308 cm | 10 ft 1 in | Concert |
Length matters for sound because a longer case allows longer bass strings and a larger soundboard. The gain is largest below about 6 ft; above that, the extra length mostly adds power and sustain for large rooms.
Upright piano sizes
Uprights are classed by height. A taller case holds longer strings and a larger soundboard, so a full-size upright can sound bigger than a small baby grand.
| Type | Height | Width | Depth | Typical weight |
|---|---|---|---|---|
| Spinet | 36–40 in (91–102 cm) | 56–58 in (142–147 cm) | 22–24 in (56–61 cm) | 300–400 lb (136–181 kg) |
| Console | 40–44 in (102–112 cm) | 57–59 in (145–150 cm) | 23–25 in (58–64 cm) | 350–450 lb (159–204 kg) |
| Studio | 44–48 in (112–122 cm) | 58–60 in (147–152 cm) | 24–26 in (61–66 cm) | 400–500 lb (181–227 kg) |
| Full (professional) upright | 48–60 in (122–152 cm) | 58–61 in (147–155 cm) | 24–27 in (61–69 cm) | 500–800 lb (227–363 kg) |
For a concrete example, the Yamaha U1 is 121 cm (47.6 in) tall, 153 cm (60.2 in) wide and 61 cm (24 in) deep, and the taller U3 is 131 cm (51.6 in) tall with the same width. Spinets, made mostly before the 1990s, use a drop action below the keys and are harder to regulate; most technicians suggest a console or studio as the smallest upright to buy.
Piano keyboard size chart
A standard piano has 88 keys from A0 to C8: 52 white and 36 black. Full-size white keys are about 0.93 in (23.5 mm) wide, so one octave (seven white keys) spans about 6.5 in (165 mm). The table works from that key width; add 2–8 in (5–20 cm) for the end cheeks and controls of a digital instrument.
| Keys | White keys | Range | Key span | Typical instrument width |
|---|---|---|---|---|
| 25 | 15 | 2 octaves | 13.9 in (35 cm) | 18–21 in (46–53 cm) |
| 49 | 29 | 4 octaves | 26.8 in (68 cm) | 31–34 in (79–86 cm) |
| 61 | 36 | 5 octaves | 33.3 in (85 cm) | 37–40 in (94–102 cm) |
| 76 | 45 | 6¼ octaves | 41.6 in (106 cm) | 45–49 in (114–124 cm) |
| 88 | 52 | 7¼ octaves | 48.1 in (122 cm) | 50–56 in (127–142 cm) digital; 56–61 in (142–155 cm) acoustic |
- Key length: the visible part of a white key is about 5.9 in (150 mm); black keys are about 0.5 in (13 mm) wide and 3.7 in (95 mm) long.
- Key dip: a key travels about 0.39 in (10 mm) when fully pressed.
- Height: the tops of the white keys sit about 28.5–29.5 in (72–75 cm) above the floor, and a standard bench seat is about 19–20 in (48–51 cm) high. Adjustable benches cover roughly 18–22 in.
- Mini keys on small portable keyboards are narrower, and the span figures above do not apply to them. Practice on full-size keys if the goal is an acoustic piano.
Digital piano dimensions
Digital pianos need far less depth than acoustic ones because there are no strings or soundboard.
- Portable 88-key (slab) models: about 50–52 in (127–132 cm) wide, 11–12 in (28–30 cm) deep and 25–40 lb (11–18 kg). On a stand, the keys sit at the same 28.5–29.5 in height as an acoustic.
- Console (cabinet) digital pianos: about 53–57 in (135–145 cm) wide, 13–18 in (33–46 cm) deep and 30–37 in (76–94 cm) tall, weighing 75–175 lb (34–79 kg).
- Digital grands: grand-shaped cases from about 3 to 5 ft long, built for looks; the playing area is the same 88 keys.
How much room a piano needs
Add the bench and the player to the piano's own footprint. A bench is about 14 in (36 cm) deep, and a seated player needs about 3 ft (91 cm) of clear space measured back from the keyboard. Grands also need room on the right side for the lid prop and for people to walk around the curve.
| Piano | Piano footprint | With bench and player | Comfortable room (rule of thumb) |
|---|---|---|---|
| Console upright | 58 × 24 in (147 × 61 cm) | 58 × 60 in (147 × 152 cm) | Any room with a 5 ft wall free |
| Baby grand (5 ft 3 in) | 63 × 58 in (160 × 147 cm) | 99 × 58 in (251 × 147 cm) | 10 × 12 ft (3 × 3.7 m) or larger |
| Medium grand (5 ft 9 in) | 69 × 58 in (175 × 147 cm) | 105 × 58 in (267 × 147 cm) | 12 × 14 ft (3.7 × 4.3 m) or larger |
| Grand (6 ft 11 in) | 83 × 58.5 in (211 × 149 cm) | 119 × 58.5 in (302 × 149 cm) | 14 × 16 ft (4.3 × 4.9 m) or larger |
| Concert grand (9 ft) | 108 × 62 in (274 × 157 cm) | 144 × 62 in (366 × 157 cm) | Halls, studios, very large rooms |
The room sizes are planning guidance, not acoustic rules. A large grand in a small, hard-surfaced room gets loud quickly; a rug under the piano and soft furnishings help. The rug size guide covers sizes that fit under a grand with the bench on it.
Tape the footprint on the floor, including 36 in (91 cm) behind the keyboard for the bench and player. Check that doors and walkways still clear it. A grand's curved side extends to the player's right, so the tail usually points toward the room and the straight side goes against or parallel to a wall.
Moving a piano: doors, stairs and floors
- Doorways: uprights roll through on a dolly in their normal position, so the door must be wider than the piano's depth (typically 24–27 in) plus a little for padding. Grands are turned on their straight side on a piano board with the legs and pedal lyre removed, which lets them through doors about 30 in (76 cm) wide or more. Standard interior door sizes are 28–36 in.
- Floors: a 650 lb (295 kg) baby grand spread over its footprint plus bench area loads a floor with roughly 25 lb per sq ft, well under the 40 lb per sq ft that the International Residential Code requires for living areas. The load sits on three casters, so use caster cups to spread it and protect wood floors.
- Stairs and tight turns are the real limit. A 7 ft piano on a board is about 7 ft long and 5 ft tall, so check the turning space at landings before you buy.
For other instruments, see the guitar size guide and the violin size chart; a full-size 4/4 violin fits in a case about 31 in long. Planning a whole room? The furniture dimensions guide gives clearances for sofas and chairs around a piano.
Frequently asked questions
What sizes are concert grand pianos?
Most concert grands are about 9 ft long: the Steinway Model D is 8 ft 11¾ in (274 cm) and the Yamaha CFX is 275 cm. The longest in regular production are the Bösendorfer Imperial at 290 cm (9 ft 6 in), which has 97 keys, and the Fazioli F308 at 308 cm (10 ft 1 in).
How big is a baby grand piano?
A baby grand is usually 5 ft to 5 ft 6 in (152–168 cm) long and about 58 in (147 cm) wide, and weighs roughly 500–650 lb (227–295 kg). Pianos under 5 ft are often sold as petite grands.
How wide is a piano keyboard?
An 88-key keyboard spans about 48 in (122 cm), because its 52 white keys are each about 0.93 in (23.5 mm) wide. The whole piano, including the cheeks at each end, is about 56–61 in (142–155 cm) wide.
How much does a piano weigh?
Spinet and console uprights weigh about 300–450 lb (136–204 kg), full-size uprights 500–800 lb (227–363 kg), baby grands about 500–650 lb (227–295 kg) and concert grands about 990 lb (450 kg) or more.
Will a grand piano fit through a standard door?
Usually, yes. Movers remove the legs and pedal lyre and stand the grand on its straight side on a padded board, so it passes through a doorway about 30 in (76 cm) wide or more. Uprights roll through on a dolly if the door is wider than the piano's depth, typically 24–27 in.