{
  "slug": "force-calculator",
  "title": "Force Calculator (F = ma)",
  "heading": "Force Calculator",
  "category": "math",
  "url": "https://www.revenuelab.fyi/toolbox/force-calculator",
  "summary": "Newtons, pounds-force, weight, and momentum.",
  "description": "Newton's second law: force equals mass times acceleration. Also converts to pounds-force and shows weight under Earth gravity.",
  "formula": "F = m × a",
  "dateModified": "2026-09-30",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=force-calculator",
  "inputs": [
    {
      "id": "mass",
      "label": "Mass",
      "kind": "number",
      "hint": null,
      "default": 10,
      "unit": "kg",
      "min": 0,
      "max": null
    },
    {
      "id": "accel",
      "label": "Acceleration",
      "kind": "number",
      "hint": null,
      "default": 5,
      "unit": "m/s²",
      "min": 0,
      "max": null
    }
  ],
  "outputs": [
    {
      "id": "force",
      "label": "Force (N)",
      "format": "decimal",
      "hint": null,
      "primary": true
    },
    {
      "id": "lbf",
      "label": "Force (lbf)",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "weight",
      "label": "Weight on Earth (N)",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "kgf",
      "label": "Force (kgf)",
      "format": "decimal",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Mass: 10 kg",
      "Acceleration: 5 m/s²"
    ],
    "outputs": [
      "Force (N): 50",
      "Force (lbf): 11.24",
      "Weight on Earth (N): 98.1",
      "Force (kgf): 5.1"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter mass (kg).",
      "Enter acceleration (m/s²).",
      "Read your force (n) 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": {
        "mass": 6,
        "accel": 3
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "mass": 10,
        "accel": 5
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "mass": 16,
        "accel": 8
      }
    }
  ],
  "limitations": [
    "Results are rounded for display; the underlying calculation keeps full precision.",
    "Very large or very small inputs may hit floating-point limits in the browser.",
    "Inputs outside the accepted range are clamped rather than rejected."
  ],
  "faq": [
    {
      "q": "How does the force calculator work?",
      "a": "Newton's second law: force equals mass times acceleration. Also converts to pounds-force and shows weight under Earth gravity. The underlying maths is: F = m × a"
    },
    {
      "q": "What do I need to enter?",
      "a": "2 values: mass, and acceleration. 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 force (n) result mean?",
      "a": "It is returned as a decimal number 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. Results are rounded for display; the underlying calculation keeps full precision."
    },
    {
      "q": "Who is this tool for?",
      "a": "It's built for students, developers, and anyone who needs the answer right now without setting up a spreadsheet."
    }
  ],
  "related": [],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — Force Calculator (F = ma) (https://www.revenuelab.fyi/toolbox/force-calculator)"
}