{
  "entity_type": "unit_conversion_page",
  "id": "teaspoons-to-tablespoons",
  "name": "US teaspoons to US tablespoons",
  "title": "US teaspoons to US tablespoons Converter (tsp to tbsp)",
  "description": "Convert US teaspoons to US tablespoons: 1 tsp = 0.333333 tbsp. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.",
  "quantity": "volume",
  "quantity_name": "Volume",
  "base_unit": "L",
  "from_unit": {
    "symbol": "tsp",
    "display": "tsp",
    "name": "US teaspoons",
    "singular": "teaspoon"
  },
  "to_unit": {
    "symbol": "tbsp",
    "display": "tbsp",
    "name": "US tablespoons",
    "singular": "tablespoon"
  },
  "linear": true,
  "factor": 0.3333333333,
  "inverse_factor": 3,
  "formula": "US tablespoons = US teaspoons × 0.3333333333",
  "reverse_formula": "US teaspoons = US tablespoons × 3",
  "unit_relation": "1 tsp = 0.333333 tbsp",
  "examples": [
    {
      "value": 5,
      "result": 1.66667,
      "text": "5 tsp = 1.66667 tbsp"
    },
    {
      "value": 12.5,
      "result": 4.16667,
      "text": "12.5 tsp = 4.16667 tbsp"
    },
    {
      "value": 100,
      "result": 33.3333,
      "text": "100 tsp = 33.3333 tbsp"
    }
  ],
  "table": [
    {
      "tsp": 1,
      "tbsp": 0.333333
    },
    {
      "tsp": 2,
      "tbsp": 0.666667
    },
    {
      "tsp": 3,
      "tbsp": 1
    },
    {
      "tsp": 4,
      "tbsp": 1.33333
    },
    {
      "tsp": 5,
      "tbsp": 1.66667
    },
    {
      "tsp": 6,
      "tbsp": 2
    },
    {
      "tsp": 7,
      "tbsp": 2.33333
    },
    {
      "tsp": 8,
      "tbsp": 2.66667
    },
    {
      "tsp": 9,
      "tbsp": 3
    },
    {
      "tsp": 10,
      "tbsp": 3.33333
    },
    {
      "tsp": 15,
      "tbsp": 5
    },
    {
      "tsp": 20,
      "tbsp": 6.66667
    },
    {
      "tsp": 25,
      "tbsp": 8.33333
    },
    {
      "tsp": 30,
      "tbsp": 10
    },
    {
      "tsp": 40,
      "tbsp": 13.3333
    },
    {
      "tsp": 50,
      "tbsp": 16.6667
    },
    {
      "tsp": 75,
      "tbsp": 25
    },
    {
      "tsp": 100,
      "tbsp": 33.3333
    },
    {
      "tsp": 200,
      "tbsp": 66.6667
    },
    {
      "tsp": 250,
      "tbsp": 83.3333
    },
    {
      "tsp": 500,
      "tbsp": 166.667
    },
    {
      "tsp": 1000,
      "tbsp": 333.333
    }
  ],
  "faq": [
    {
      "q": "How many US tablespoons are in one teaspoon?",
      "a": "1 tsp = 0.333333 tbsp. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures."
    },
    {
      "q": "What is the formula to convert US teaspoons to US tablespoons?",
      "a": "Multiply the value in US teaspoons by 0.3333333333: US tablespoons = US teaspoons × 0.3333333333. For example, 5 tsp = 1.66667 tbsp."
    },
    {
      "q": "How do I convert US tablespoons back to US teaspoons?",
      "a": "Multiply by the inverse factor 3 (US teaspoons = US tablespoons × 3), or use the US tablespoons-to-US teaspoons page."
    }
  ],
  "sources": [
    {
      "name": "NIST Special Publication 811 – Guide for the Use of the International System of Units (SI), Appendix B conversion factors",
      "url": "https://www.nist.gov/pml/special-publication-811",
      "type": "standard",
      "retrieved_at": "2026-09-24"
    },
    {
      "name": "BIPM – The International System of Units (SI Brochure, 9th edition)",
      "url": "https://www.bipm.org/en/publications/si-brochure",
      "type": "standard",
      "retrieved_at": "2026-09-24"
    },
    {
      "name": "Wikipedia – Conversion of units",
      "url": "https://en.wikipedia.org/wiki/Conversion_of_units",
      "type": "reference",
      "retrieved_at": "2026-09-24"
    }
  ],
  "freshness": {
    "type": "static",
    "max_age_seconds": null,
    "note": "Fixed conversion factors (NIST/BIPM definitions); results never go stale."
  },
  "api": {
    "convert": "https://tttkmbb.com/api/v1/convert?value=5&from_unit=tsp&to_unit=tbsp",
    "calculator": "https://tttkmbb.com/api/v1/calculate/volume?value=5&from_unit=tsp&to_unit=tbsp",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "tsp",
      "to_unit": "tbsp"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/teaspoons-to-tablespoons",
    "markdown": "https://tttkmbb.com/conversion/teaspoons-to-tablespoons.md",
    "json": "https://tttkmbb.com/conversion/teaspoons-to-tablespoons.json",
    "reverse": "https://tttkmbb.com/conversion/tablespoons-to-teaspoons",
    "quantity_converter": "https://tttkmbb.com/conversion/volume",
    "units": "https://tttkmbb.com/api/v1/units?quantity=volume"
  },
  "timestamp": "2026-09-24"
}