---
title: "Teaspoons to US fluid ounces — tsp to fl oz converter"
description: "1 teaspoon = 0.16667 US fluid ounces. Convert teaspoons to US fluid ounces with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/teaspoons-to-fl-oz/
site: "At One Place"
---

# Teaspoons to US fluid ounces

**1 teaspoon in US fluid ounces: 1 tsp = 0.16667 fl oz**

fl oz = tsp × 1/6

To convert teaspoons to US fluid ounces, multiply by 0.1666666667. The table below gives the values people look up most often, and the converter works for any number.

## Teaspoons to US fluid ounces table

*Common teaspoon values converted to US fluid ounces.*

| Teaspoons | US fluid ounces |
| --- | --- |
| 1 tsp | 0.16667 |
| 2 tsp | 0.33333 |
| 3 tsp | 0.5 |
| 4 tsp | 0.66667 |
| 5 tsp | 0.83333 |
| 10 tsp | 1.666667 |
| 15 tsp | 2.5 |
| 20 tsp | 3.333333 |
| 25 tsp | 4.166667 |
| 30 tsp | 5 |
| 40 tsp | 6.666667 |
| 50 tsp | 8.333333 |
| 75 tsp | 12.5 |
| 100 tsp | 16.66667 |
| 250 tsp | 41.66667 |
| 500 tsp | 83.33333 |
| 1,000 tsp | 166.6667 |

## How the conversion works

The relationship is fl oz = tsp × 1/6. 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.

## Common questions

### How many US fluid ounces are in one teaspoon?

One teaspoon equals 0.16667 US fluid ounces. fl oz = tsp × 1/6.

### How do you convert teaspoons to US fluid ounces?

Use fl oz = tsp × 1/6. So 10 tsp is 1.666667 fl oz.

### How many teaspoons are in one US fluid ounce?

One US fluid ounce equals 6 teaspoons, which is the reverse of the conversion above.

## Related pages

- [US fluid ounces to Teaspoons](https://atoneplace.net/convert/fl-oz-to-teaspoons/)
- [Teaspoons to Liters](https://atoneplace.net/convert/teaspoons-to-liters/)
- [Teaspoons to Milliliters](https://atoneplace.net/convert/teaspoons-to-ml/)
- [Teaspoons to Cubic meters](https://atoneplace.net/convert/teaspoons-to-cubic-meters/)
- [Teaspoons to US gallons](https://atoneplace.net/convert/teaspoons-to-gallons/)
- [Teaspoons to US quarts](https://atoneplace.net/convert/teaspoons-to-quarts/)
- [Teaspoons to US pints](https://atoneplace.net/convert/teaspoons-to-pints/)
- [Teaspoons to US cups](https://atoneplace.net/convert/teaspoons-to-cups/)
- [Teaspoons to Tablespoons](https://atoneplace.net/convert/teaspoons-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/)