Convert semitones, cents, speed percent, two frequencies or two BPMs into one va
Convert semitones, cents, speed percent, two frequencies or two BPMs into one varispeed ratio with all equivalents.
Answers HTTP 429 without x402 payment termsour last check, 2026-10-21
0 of 1checks answered this week
n/amedian answer time
$0.02listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://music-production-calc.x402tookit.com/pitch-speed
| Category | Everything else |
|---|---|
| Provider host | music-production-calc.x402tookit.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | no x402 terms | 429 | 296 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"bpm": 120,
"hz": 440,
"semitones": 1
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"bpm": {
"description": "Optional tempo to show after the change",
"type": "number"
},
"cents": {
"description": "Pitch shift in cents (100 cents = 1 semitone)",
"type": "number"
},
"fromBpm": {
"description": "Starting tempo (use with toBpm)",
"type": "number"
},
"fromHz": {
"description": "Starting frequency in Hz (use with toHz)",
"type": "number"
},
"hz": {
"description": "Optional frequency to show after the change",
"type": "number"
},
"semitones": {
"description": "Pitch shift in semitones (give exactly one input group)",
"type": "number"
},
"speedPercent": {
"description": "Speed change in percent, for example 8 for +8 percent (more than -100)",
"type": "number"
},
"toBpm": {
"description": "Ending tempo (use with fromBpm)",
"type": "number"
},
"toHz": {
"description": "Ending frequency in Hz (use with fromHz)",
"type": "number"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"bpmAfter": {
"type": [
"null",
"number"
]
},
"cents": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"hzAfter": {
"type": [
"null",
"number"
]
},
"inputMode": {
"type": [
"null",
"string"
]
},
"isSpeedUp": {
"type": [
"boolean",
"null"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"octaves": {
"type": [
"null",
"number"
]
},
"ratio": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"semitones": {
"type": [
"null",
"number"
]
},
"source": {
"type": [
"null",
"string"
]
},
"speedPercent": {
"type": [
"null",
"number"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}