{
  "id": "teaspoons-to-tablespoons",
  "version": "46b13a60330c",
  "status": "published",
  "name": "Teaspoons to Tablespoons Converter",
  "question": "How do I convert tsp to tbsp?",
  "summary": "Converts teaspoons (tsp) to tablespoons (tbsp) and back, with the exact unit definitions.",
  "category": "convert",
  "subcategory": "cooking",
  "url": "https://www.acalculator.org/convert/teaspoons-to-tablespoons",
  "markdown": "https://www.acalculator.org/convert/teaspoons-to-tablespoons.md",
  "kind": "formulas",
  "method": "tbsp = tsp × 0.333333333333 (the same as tsp ÷ 3)",
  "assumptions": [
    "1 teaspoon = 0.333333333333 tablespoons, from the exact definitions in NIST SP 811.",
    "Cups, ounces, tablespoons, teaspoons, pints, quarts, and gallons are US customary units: 1 US cup is 8 US fluid ounces.",
    "Exact on the typed decimals: at most 6 decimal places (6 significant digits below 0.0001), rounded half up."
  ],
  "inputs": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "properties": {
      "value": {
        "title": "Teaspoons (tsp)",
        "description": "The amount in teaspoons to convert.",
        "type": "number",
        "minimum": 0,
        "maximum": 1000000000000
      },
      "result": {
        "title": "Tablespoons (tbsp)",
        "description": "The same amount in tablespoons.",
        "type": "number",
        "minimum": 0,
        "maximum": 333333333333.3333
      }
    }
  },
  "solve": {
    "fillAny": 1,
    "variables": [
      "value",
      "result"
    ],
    "inputsOnly": []
  },
  "outputs": {
    "value": {
      "label": "Teaspoons (tsp)",
      "description": "The amount in teaspoons to convert.",
      "format": "number"
    },
    "result": {
      "label": "Tablespoons (tbsp)",
      "description": "The amount in tablespoons.",
      "format": "number"
    }
  },
  "defaultAnswer": {
    "inputs": {
      "value": 1
    },
    "outputs": {
      "result": 0.3333333333333333
    },
    "text": "1 tsp = 0.333333 tbsp."
  },
  "examples": [
    {
      "given": {
        "value": 1
      },
      "expect": {
        "result": 0.3333333333333333
      },
      "source": "exact unit definitions in NIST SP 811 (2008), Appendix B.8"
    },
    {
      "given": {
        "value": 3
      },
      "expect": {
        "result": 1
      },
      "source": "exact unit definitions in NIST SP 811 (2008), Appendix B.8"
    },
    {
      "given": {
        "result": 1
      },
      "expect": {
        "value": 3
      },
      "source": "exact unit definitions in NIST SP 811 (2008), Appendix B.8"
    }
  ],
  "sources": [
    "NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B.8. https://www.nist.gov/pml/special-publication-811",
    "NIST Office of Weights and Measures, Metric Kitchen: Cooking Measurement Equivalencies (1 teaspoon = 5 mL, 1 tablespoon = 15 mL), retrieved 2026-10-01. https://www.nist.gov/pml/owm/metric-kitchen-cooking-measurement-equivalencies"
  ],
  "related": [
    "tablespoons-to-cups",
    "cups-to-tablespoons",
    "teaspoons-to-cups"
  ],
  "changelog": []
}