{
  "slug": "pace",
  "title": "Pace Calculator",
  "heading": "Running Pace Calculator",
  "category": "fitness-health",
  "url": "https://www.revenuelab.fyi/toolbox/pace",
  "summary": "Pace, distance, and finish time for runners.",
  "description": "Given a distance and finish time, compute pace per mile and per kilometer.",
  "formula": null,
  "dateModified": "2026-10-03",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=pace",
  "inputs": [
    {
      "id": "distance",
      "label": "Distance",
      "kind": "number",
      "hint": null,
      "default": 5,
      "unit": null,
      "min": 0,
      "max": null
    },
    {
      "id": "unit",
      "label": "Distance unit",
      "kind": "select",
      "hint": null,
      "default": "km",
      "options": [
        {
          "value": "km",
          "label": "Kilometers"
        },
        {
          "value": "mi",
          "label": "Miles"
        }
      ]
    },
    {
      "id": "hours",
      "label": "Hours",
      "kind": "number",
      "hint": null,
      "default": 0,
      "unit": null,
      "min": 0,
      "max": 24
    },
    {
      "id": "minutes",
      "label": "Minutes",
      "kind": "number",
      "hint": null,
      "default": 25,
      "unit": null,
      "min": 0,
      "max": 59
    },
    {
      "id": "seconds",
      "label": "Seconds",
      "kind": "number",
      "hint": null,
      "default": 0,
      "unit": null,
      "min": 0,
      "max": 59
    }
  ],
  "outputs": [
    {
      "id": "pacePerKm",
      "label": "Pace per km",
      "format": "raw",
      "hint": null,
      "primary": true
    },
    {
      "id": "pacePerMi",
      "label": "Pace per mile",
      "format": "raw",
      "hint": null,
      "primary": false
    },
    {
      "id": "speedKmh",
      "label": "Speed (km/h)",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "speedMph",
      "label": "Speed (mph)",
      "format": "decimal",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Distance: 5",
      "Distance unit: Kilometers",
      "Hours: 0",
      "Minutes: 25",
      "Seconds: 0"
    ],
    "outputs": [
      "Pace per km: 5:00",
      "Pace per mile: 8:03",
      "Speed (km/h): 12",
      "Speed (mph): 7.46"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter distance.",
      "Enter distance unit.",
      "Enter hours.",
      "Enter minutes.",
      "Enter seconds.",
      "Read your pace per km on the right — it updates as you type.",
      "Hit Share to keep the scenario or send it to someone."
    ]
  },
  "scenarios": [
    {
      "name": "Conservative",
      "description": "Lower-end numbers — what if things land soft?",
      "values": {
        "distance": 3,
        "unit": "km",
        "hours": 0,
        "minutes": 15,
        "seconds": 0
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "distance": 5,
        "unit": "km",
        "hours": 0,
        "minutes": 25,
        "seconds": 0
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "distance": 8,
        "unit": "km",
        "hours": 0,
        "minutes": 40,
        "seconds": 0
      }
    }
  ],
  "limitations": [
    "Population formulas describe averages; individual bodies vary, especially at the extremes of height, age, or muscle mass.",
    "Results do not account for medical conditions, medication, or pregnancy.",
    "Use this as a directional reference, not a diagnosis — talk to a clinician before acting on it."
  ],
  "faq": [
    {
      "q": "How does the running pace calculator work?",
      "a": "Given a distance and finish time, compute pace per mile and per kilometer."
    },
    {
      "q": "What do I need to enter?",
      "a": "5 values: distance, distance unit, hours, minutes, and seconds. Each field starts with a sensible default, so you can change one number at a time and watch the result move."
    },
    {
      "q": "What does the pace per km result mean?",
      "a": "It is returned as a plain value and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds."
    },
    {
      "q": "Is this calculator free, and do I need an account?",
      "a": "Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser."
    },
    {
      "q": "How accurate is the result?",
      "a": "It applies the standard formula exactly, so the arithmetic is precise. Population formulas describe averages; individual bodies vary, especially at the extremes of height, age, or muscle mass."
    },
    {
      "q": "Who is this tool for?",
      "a": "It's built for anyone tracking a health or training target and wanting the standard formula applied correctly, without a signup or an app."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/calorie",
    "https://www.revenuelab.fyi/toolbox/tdee"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — Pace Calculator (https://www.revenuelab.fyi/toolbox/pace)"
}