How Many Keys Are on a Musical Keyboard?
Updated Nov 13, 2026 · By 
Jonah Mercer · Editorial policy
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A full piano has 88 keys, and every keyboard in this guide has 61 keys: the Casio Casiotone CT-S200RD, the Best Choice Products 61-Key set, the JIKADA 61 Key and the MIZAYI 61 Keys. Count the keys before you buy, since the number decides how much of the piano range the keyboard covers.
Count the keys on the keyboard
Count the white and black keys across the keyboard, or read the key count in the product name: the Casio Casiotone CT-S200RD, the Best Choice Products 61-Key set, the JIKADA 61 Key and the MIZAYI 61 Keys each carry 61 keys. A full piano has 88 keys, so a 61-key keyboard covers less of the piano range. If you play pieces that reach the lowest or highest notes of a piano, the missing keys matter.
What else the key count changes
Key count and length go together: the Best Choice Products set measures 36.4 inches long, the JIKADA measures 35.4 inches long, and the MIZAYI measures 22.83 inches long. The Casio Casiotone CT-S200RD carries 61 full-size keys, so its keys match piano key size. Check the length against the space where the keyboard will sit.
Tones and rhythms differ by keyboard
Key count stays at 61 across these four, and the sounds differ. The Casio Casiotone CT-S200RD carries 400 tones and 77 rhythms, the Best Choice Products set carries 255 timbres and 255 rhythms, the JIKADA carries 300 tones and 300 rhythms, and the MIZAYI carries 100 tones and 100 rhythms. Built-in songs differ too: the Casio carries 60, and the Best Choice Products set and the JIKADA each carry 50 demo songs.
Power and extras in the box
The Casio Casiotone CT-S200RD runs on batteries and includes a power supply and a music rest. The Best Choice Products set includes a stand, a bench, headphones and note stickers. The JIKADA includes a stand, a stool, headphones, a microphone and a music rest. The MIZAYI includes a microphone and runs on a DC 5V adapter or 4 AA batteries.
What you need
Casio Casiotone CT-S200RD
A 61-key portable keyboard with full-size keys, 400 tones and 77 rhythms.
- Keys: 61
- Built-in sounds: 400
- Runs on batteries
- 1-year warranty stated
Best Choice Products 61-Key Beginners Complete Electronic
A 61-key set with lighted keys, teaching modes and a stand, bench and headphones in the box.
- Keys: 61
- 60-day warranty stated
JIKADA 61 Key Electronic Keyboard Piano
A 61-key keyboard with 300 tones, 300 rhythms and a stand, stool, headphones and microphone.
- Keys: 61
- Built-in sounds: 300
- Headphone output
MIZAYI 61 Keys Piano Keyboard with Built-in Speaker
A 61-key keyboard with 100 tones, 100 rhythms, a microphone and battery power.
- Keys: 61
- Built-in sounds: 100
- Runs on batteries
These come from our ranked list Best Keyboard Pianos, which compares them spec by spec.
Frequently asked questions
How many keys does a full piano have?
A full piano has 88 keys. Every keyboard in this guide has 61 keys.
Do all four keyboards here have the same number of keys?
Yes. The Casio Casiotone CT-S200RD, the Best Choice Products 61-Key set, the JIKADA 61 Key and the MIZAYI 61 Keys each carry 61 keys.
How many tones does the Casio Casiotone CT-S200RD have?
The Casio Casiotone CT-S200RD carries 400 tones and 77 rhythms, plus 10 reverb types and 60 built-in songs. The JIKADA carries 300 tones, the Best Choice Products set carries 255 timbres, and the MIZAYI carries 100 tones.
Ranked portable keyboards lists
More how-to guides
Product details come from each Amazon listing and can change. Check the listing before you buy.