Reading & speaking time API

Estimates reading and speaking time from a word count (or text) using configurable WPM rates, returning minutes and formatted m:ss for each. Answers 'How long to read 1190 words?', 'How long would it take to speak this aloud?'.

Price$0.02per request

MethodPOST

Route/v1/design/reading-time

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

designtypographyreading-timespeaking-timewpmword-countcontentestimate

API URLhttps://x402.hexl.dev/v1/design/reading-time

Integration docs

Example request

{
  "words": 1190
}

Example response

{
  "words": 1190,
  "readingWpm": 238,
  "speakingWpm": 130,
  "readingMinutes": 5,
  "readingTime": "5:00",
  "speakingMinutes": 9.154,
  "speakingTime": "9:09",
  "interpretation": "~5 min read, ~9 min spoken."
}

Input schema

{
  "type": "object",
  "required": [],
  "properties": {
    "words": {
      "type": "number",
      "description": "Word count (or supply text)",
      "examples": [
        1190
      ]
    },
    "text": {
      "type": "string",
      "description": "Text to count words from",
      "examples": [
        "one two three four five"
      ]
    },
    "readingWpm": {
      "type": "number",
      "description": "Silent reading rate (default 238)",
      "examples": [
        238
      ]
    },
    "speakingWpm": {
      "type": "number",
      "description": "Speaking rate (default 130)",
      "examples": [
        130
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}