Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Unit Converters
Teaspoons to Milliliters Converter (tsp to mL)
mL = US teaspoons × 4.928921594.
US teaspoon is 4.93 mL. Metric baking teaspoons are 5 mL. For medicine, 5 mL is the teaspoon they meant. Do not use a kitchen tea spoon from the drawer; those wander.
Teaspoons
tsp → mL
4.93 mL
1 tsp salt → 4.93 mL. 5 mL medicine cup ≈ 1.01 US tsp.
- You typed
- 1 tsp
- One mL is
- 0.2 tsp
- How it’s calculated
- mL = US teaspoons × 4.928921594.
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
Teaspoons
The “Teaspoons” value used in this tool’s formula. Adjust it to see results update live.
How this calculator works
US teaspoon is 4.93 mL. Metric baking teaspoons are 5 mL. For medicine, 5 mL is the teaspoon they meant. Do not use a kitchen tea spoon from the drawer; those wander. mL = US teaspoons × 4.928921594. Example: 1 tsp salt → 4.93 mL. 5 mL medicine cup ≈ 1.01 US tsp.
mL = US teaspoons × 4.928921594.
Example: 1 tsp salt → 4.93 mL. 5 mL medicine cup ≈ 1.01 US tsp.
When to use this Teaspoons to Milliliters
Common use cases
- US teaspoon is 4.93 mL. Metric baking teaspoons are 5 mL. For medicine, 5 mL is the teaspoon they meant. Do not use a kitchen tea spoon from the drawer; those wander.
- Sanity-check with this case: 1 tsp salt → 4.93 mL. 5 mL medicine cup ≈ 1.01 US tsp.
- The relationship is: mL = US teaspoons × 4.928921594.
Localized examples
- Unit Converters: the example on this page uses the same formula as the widget.
What you get
- Fields: Teaspoons
- mL = US teaspoons × 4.928921594.
- Example on the page: 1 tsp salt → 4.93 mL. 5 mL medicine cup ≈ 1.01 US tsp.
How to Convert Teaspoons to Milliliters Step-by-Step
- 1Enter Teaspoons. Use the values you have, not a catalog average, unless that is all you know.
- 2mL = US teaspoons × 4.928921594.
- 3Worked case: 1 tsp salt → 4.93 mL. 5 mL medicine cup ≈ 1.01 US tsp.
- 4Check which dictionary the other person is using — US or UK, decimal or 1,024 — then trust the number.
Governing formula
mL = US teaspoons × 4.928921594.
1 tsp salt → 4.93 mL. 5 mL medicine cup ≈ 1.01 US tsp.
Example: set Teaspoons = 1, then read the result.
Variable definitions
- value
Teaspoons
The “Teaspoons” field. Default 1; typical range 0–50.
- The conversion (mL = US teaspoons × 4.928921594.) does not pick US vs UK gallons, SI vs binary megabytes, or Mach at altitude for you. Read the footnote on the page.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
For soup, yes. For pediatric drops, use the syringe that came with the bottle.
Related calculators
Unit Converters
- Cups to MillilitersUS customary cup is 240 mL in nutrition labels and 236.6 mL in the true fluid-cup (8 fl oz). This page uses the 8 fl oz cup (236.6 mL). A “metric cup” in Australia is 250 mL. If the cake falls, check which cup the author owned.
- Fluid Ounces to MillilitersUS fl oz × 29.57 = mL. An 8 oz cup of coffee is 237 mL. UK fl oz is 28.4 mL. Bottle labels that say 12 fl oz are 355 mL — the beer can you already know.
- Metric Cups to MillilitersA metric cup is 250 mL. Australian and NZ recipes usually mean this. It is not the US customary cup (~236.588 mL) and not the US legal cup (240 mL) used on nutrition labels. If the cookbook is from Melbourne, start here.
- Milk Cups to MillilitersMilk and water weigh almost the same in a measuring cup. A US cup is 236.6 mL (8 fl oz). Nutrition labels round to 240 mL. Whole milk is slightly denser; it will not save a sauce that was 20 mL short.
- Milliliters to Fluid OuncesBottles, baby formula, and espresso. Divide mL by 29.5735 for US fl oz. A 500 mL water bottle is 16.9 fl oz, which is why the label says both. UK fl oz is different; this is US.
- Salt Pinch to TeaspoonsA kitchen pinch is roughly 1/16 teaspoon — two fingers, not a three-finger grab. Chefs argue. If the soup is for guests, weigh 0.3 g of table salt and stop pretending.
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Reviews & Ratings
See what others think about this tool, then leave your own rating to help improve CalculioHub.
4.8
out of 5.0
4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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