--- title: "21 cup to tbsp = 336 tbsp" description: "21 US cups is 336 tablespoons. The arithmetic, a table of nearby values, and a converter for any other number." url: https://atoneplace.net/convert/21-cups-to-tablespoons/ site: "At One Place" --- # 21 cup to tbsp **21 US cups in tablespoons: 21 cup = 336 tbsp** tbsp = cup × 16 21 US cups is 336 tablespoons. To get there, multiply by 16. ## Values either side *US cups near 21, converted to tablespoons.* | US cups | Tablespoons | | --- | --- | | 17 cup | 272 | | 18 cup | 288 | | 19 cup | 304 | | 20 cup | 320 | | 21 cup ← | 336 | | 22 cup | 352 | | 23 cup | 368 | | 24 cup | 384 | | 25 cup | 400 | ## How the conversion works The relationship is tbsp = cup × 16. Both units measure volume, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two. > US cup: US legal cup is 240 mL; the customary cup used here is 236.588 mL. ## Common questions ### What is 21 cup in tablespoons? 21 cup is 336 tbsp. ### How do you convert US cups to tablespoons? Multiply by 16. ## Related pages - [US cups to tablespoons](https://atoneplace.net/convert/cups-to-tablespoons/) - [21 tbsp to cup](https://atoneplace.net/convert/21-tablespoons-to-cups/) - [17 cup to tbsp](https://atoneplace.net/convert/17-cups-to-tablespoons/) - [18 cup to tbsp](https://atoneplace.net/convert/18-cups-to-tablespoons/) - [19 cup to tbsp](https://atoneplace.net/convert/19-cups-to-tablespoons/) - [20 cup to tbsp](https://atoneplace.net/convert/20-cups-to-tablespoons/) - [22 cup to tbsp](https://atoneplace.net/convert/22-cups-to-tablespoons/) - [23 cup to tbsp](https://atoneplace.net/convert/23-cups-to-tablespoons/) - [24 cup to tbsp](https://atoneplace.net/convert/24-cups-to-tablespoons/) - [25 cup to tbsp](https://atoneplace.net/convert/25-cups-to-tablespoons/) ## Sources - Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)] - The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure) - Calculated on this page — At One Place (/about/)