Estimated one-rep max from any submaximal set using six formulas, the range betw
Estimated one-rep max from any submaximal set using six formulas, the range between them, and a percentage table of training weights and reps.
Answeringour last check, 2026-10-20
1 of 1checks answered this week
277 msmedian answer time
$0.01listed price per call
$0.01price 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://saylorinnovations.com/api/health/one-rep-max
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-20 | valid payment request | 402 | $0.01 | 277 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"reps": "6",
"weight": "185"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"reps": {
"description": "repetitions completed, 1-30",
"type": "string"
},
"weight": {
"description": "weight lifted in any unit",
"type": "string"
}
},
"required": [
"weight",
"reps"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"estimated_one_rep_max": {
"description": "Average of the formula estimates",
"type": "number"
},
"formulas": {
"description": "Estimate from each formula",
"properties": {
"brzycki": {
"description": "Brzycki estimate, null at 37 reps or more",
"type": [
"number",
"null"
]
},
"epley": {
"description": "Epley estimate",
"type": [
"number",
"null"
]
},
"lombardi": {
"description": "Lombardi estimate",
"type": [
"number",
"null"
]
},
"mayhew": {
"description": "Mayhew estimate",
"type": [
"number",
"null"
]
},
"oconner": {
"description": "O'Conner estimate",
"type": [
"number",
"null"
]
},
"wathan": {
"description": "Wathan estimate",
"type": [
"number",
"null"
]
}
},
"type": "object"
},
"note": {
"description": "Plain-language caveat about how to read and use the result",
"type": "string"
},
"percentage_table": {
"description": "Training weights as percentages of the estimated max",
"items": {
"properties": {
"approx_reps": {
"description": "Approximate repetitions possible at that weight",
"type": [
"number",
"null"
]
},
"percent": {
"description": "Percent of one-rep max",
"type": [
"number",
"null"
]
},
"weight": {
"description": "Weight at that percent",
"type": [
"number",
"null"
]
}
},
"type": "object"
},
"type": "array"
},
"range_high": {
"description": "Highest formula estimate",
"type": "number"
},
"range_low": {
"description": "Lowest formula estimate",
"type": "number"
},
"reliability": {
"description": "How trustworthy the estimate is for this rep count",
"type": "string"
},
"reps": {
"description": "Repetitions completed",
"type": "number"
},
"source": {
"description": "Where the data or formula comes from",
"type": "string"
},
"weight": {
"description": "Weight lifted",
"type": "number"
}
},
"required": [
"estimated_one_rep_max",
"percentage_table"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}