Cat Vocal Range: 50 Hz to 10 kHz, Purr at 25-150 Hz

One animal produces a purr at 25 to 150 Hz, a meow with a fundamental of 300 to 600 Hz, and a hiss whose noise band runs to 8 kHz. Put the whole repertoire end to end and a cat covers 50 Hz to 10 kHz, about 7.6 octaves, against roughly 5.3 octaves for the core of human speech between 100 Hz and 4 kHz. The numbers are not trivia: each band is made by a different mechanism, carries a different distance, and changes in a predictable way with body size, breed and age.

Three bands, one larynx

Air crosses the vocal folds and sets them vibrating; everything above that is filtering. The low band, 25 to 200 Hz, is the purr and the growl, produced with the mouth closed and driven by airflow that reverses on both inhale and exhale. The middle band, 300 to 1,200 Hz, carries the meow, the trill and the yowl, and it is where the vocal folds do the most work. The high band, 2 to 8 kHz, is almost pure turbulence: hiss and spit do not need vibrating folds at all, just a narrow opening and fast air. A fourth sound sits outside the musical description, the distress scream, which packs energy from 1 to 10 kHz and is designed to be impossible to ignore.

The purr sits at 25 to 150 Hz

A purr's fundamental is 25 to 30 Hz, and what you hear as a soft rumble is the harmonic stack above it: 50, 75, 100, 125 and 150 Hz. The rate is 20 to 30 cycles per second, remarkably steady across breeds and body sizes, and it holds on the inhale and again on the exhale, which is why a purr sounds continuous. It starts within days of birth, appears in kittens at 2 weeks, and is not a happiness signal by itself: cats purr while injured, in labor, and at the vet. Read it as self-soothing that can also be social, and pair it with body posture before drawing a conclusion.

Meow: fundamental 300 to 600 Hz

An adult meow is built on a fundamental of 300 to 600 Hz, with the first formant near 700 to 1,200 Hz and the second between 2,000 and 4,000 Hz. Those formants carry the identity, not the pitch: two cats can meow at the same 400 Hz and sound nothing alike. A kitten's isolation cry is higher, 600 to 900 Hz, and it slides down through the first year as the vocal folds lengthen, which is why an adult meow at 600 Hz often belongs to a small or young cat. The meow is also the most learned call in the repertoire; feral cats use it rarely with each other and heavily with humans, and a cat that has trained its owner to open a door will produce a variant at 500 to 700 Hz with a rising end.

Trill, chirp, yowl, hiss

The trill is a 400 to 1,200 Hz roll with 20 to 30 Hz of amplitude modulation, 0.3 to 1 second long, used as a greeting between cats that know each other. The chirp is a 30 to 80 millisecond up-sweep from about 500 to 1,000 Hz, aimed at prey or at a window. The yowl and caterwaul drop to 200 to 800 Hz, last 1 to 4 seconds, and carry 5 to 10 times further than a meow. The hiss is broadband noise from 2 to 8 kHz with a duration of 0.5 to 2 seconds, and it is the one call with no voicing at all, which is why it cannot be mistaken for anything else.

Calls by band and by how far they carry

Call	Fundamental (Hz)	Full band (Hz)	Duration	Audible at
Purr	25-30	25-150	minutes	0.5-1 m
Trill	400-1,200	400-2,000	0.3-1 s	5-10 m
Meow	300-600	300-4,000	0.3-0.9 s	15-30 m
Yowl, caterwaul	200-800	200-2,000	1-4 s	50-100 m
Hiss	none	2,000-8,000	0.5-2 s	5-15 m
Kitten distress cry	600-900	600-5,000	0.5-1.5 s	20-40 m

Range depends on frequency more than on loudness. The 200 to 800 Hz yowl carries 5 times further than the 300 to 600 Hz meow at the same effort, because low frequencies bend around obstacles and lose less energy per meter.

Three kinds of individual variation

The first is body size, and it is the most mechanical: pitch scales roughly inversely with the length of the vocal tract, so a 3 kg cat tends to sit near 500 Hz, a 5 kg cat near 420 Hz, and a 7 kg cat near 350 Hz. The second is breed. Siamese and related Oriental breeds produce a lower, raspier fundamental, often 200 to 400 Hz, with strong energy below 1 kHz, while some long-haired breeds run quieter and higher. The third is experience: pitch and pattern are partly learned, so a cat that meows at its owner for food develops a shorter, higher, more grating version at 500 to 700 Hz than the same cat uses toward another cat, and colony cats share a dialect that outsiders do not produce.

What the receiving ear covers

None of this matters unless someone can hear it, and cats hear from about 48 Hz to 85 kHz, with the most sensitive window at 2 to 8 kHz. That window sits exactly where kitten distress calls and hiss energy live, and it is why a cat responds to a 4 kHz hiss faster than to a 400 Hz meow. Humans top out near 20 kHz, so a hiss recorded on a phone often loses the top 3 to 4 kHz that gives it its edge. The same 2 to 8 kHz sensitivity explains the response to rustling at 30 to 60 dB, which reads as prey at 5 to 10 m.

Five things to listen for this week

Record 10 seconds of the meow on your phone and check the pitch trend over 3 months; a rise of 100 Hz or more is worth mentioning at the next visit.
Count purr cycles for 5 seconds and multiply by 12 to confirm the 20 to 30 Hz rate you are hearing.
Note which call your cat uses for food, for the door, and for you at 6 a.m.; if all 3 have collapsed into one 600 Hz demand, the signal has been flattened by reinforcement.
Treat a sudden change in pitch or a new hoarse quality lasting more than 2 weeks as a vet question, especially in a cat over 10.
Never hiss back at a cat to correct it: you are triggering the 2 to 8 kHz alarm band deliberately.

Vocal range is one channel of a wider sensory system; the hearing side is mapped in the hearing range guide, and the full call set overlaps with what cats communicate by scent, covered in the vocal repertoire notes. If you want to know whether a deep 350 Hz voice is normal for your cat's build, check the weight band in the breed quiz first.

Frequently asked

What frequency range can a cat's voice cover?

From about 50 Hz to 10 kHz, roughly 7.6 octaves. The purr sits at 25 to 150 Hz, meows use a 300 to 600 Hz fundamental, and hisses are broadband noise from 2 to 8 kHz with no vocal fold vibration at all.

Why does my cat's meow sound different from other cats?

Three things move it: body size, breed and learning. Pitch scales inversely with vocal tract length, so a 3 kg cat sits near 500 Hz and a 7 kg cat near 350 Hz. Siamese lines run lower and raspier at 200 to 400 Hz, and cats also learn a food meow at 500 to 700 Hz.

Is purring always a sign of contentment?

No. The 25 to 30 Hz purr appears during pain, labor and veterinary exams as well as relaxed contact, so treat it as self-soothing that can be social. Read posture and pupil size alongside it, and check the 20 to 30 cycles per second rate if the sound seems off.