Milliliters to Teaspoons Converter - Convert mL to tsp Instantly
Convert milliliters (mL) to US teaspoons (tsp) quickly and accurately with this easy-to-use volume converter. Ideal for cooking, baking, beverages, dosing, and lab prep when small liquid measurements must be precise.
Note: This tool converts milliliters to US teaspoons (tsp) using the exact factor 4.92892159375 mL per teaspoon. For metric teaspoons (5 mL), use the dedicated converter.
About Milliliters to Teaspoons Conversion
Milliliters (mL) and teaspoons (tsp) both measure volume. The milliliter is the SI metric unit used on global packaging, lab instruments, and in healthcare. The US teaspoon is a small kitchen measure common in American recipes, dosing guidance, and beverage prep. Converting mL to tsp lets you follow US cookbooks, translate dosing instructions, and standardize SOPs without guesswork.
The relationship between the units is set by exact definitions: 1 US tsp = 4.92892159375 mL. Dividing milliliters by this constant yields a precise teaspoon value suitable for technical documentation, audits, and repeatable kitchen or lab workflows.
Milliliters to Teaspoons Formula
Use the direct factor method:
tsp (US) = mL ÷ 4.92892159375Example:
30 mL = 30 ÷ 4.92892159375 = 6.08652 tsp (US)
To convert in the opposite direction:
mL = tsp × 4.92892159375.
US vs Metric Teaspoons
A US teaspoon equals 4.92892159375 mL, while a metric teaspoon equals 5 mL. The difference seems small but matters in baking, dosing, and formulation. Always confirm which standard your recipe, label, or device uses and choose the appropriate converter.
Why Convert mL to tsp?
- 🍰 Baking precision: Translate metric quantities into teaspoons for repeatable results.
- 🥤 Beverage formulation: Standardize extracts and bitters measured in teaspoons.
- 💊 Dosing: Convert household guidance into precise tsp values aligned with mL.
- 🧪 Lab prep: Express small volumes in tsp when SOPs reference kitchen measures.
- 📦 Labeling & QA: Provide dual units on instructions and nutrition panels.
Common Conversions
- 5 mL ≈ 1.01442 tsp (US)
- 10 mL ≈ 2.02884 tsp (US)
- 15 mL ≈ 3.04326 tsp (US)
- 20 mL ≈ 4.05768 tsp (US)
- 30 mL ≈ 6.08652 tsp (US)
- 50 mL ≈ 10.14421 tsp (US)
- 100 mL ≈ 20.28842 tsp (US)
- 250 mL ≈ 50.72105 tsp (US)
What is a Milliliter?
A milliliter is a metric unit equal to one-thousandth of a liter. It appears on packaging, lab glassware, and in healthcare. It pairs naturally with small measuring tools like droppers, syringes, and metric spoons.
What is a Teaspoon?
A teaspoon is a kitchen measure for small liquid (and sometimes dry) amounts. In the US customary system it equals 1/3 of a tablespoon and 1/48 of a US cup. Its exact relation to tablespoons and cups is why conversion to mL is precise.
Step-by-Step: Converting mL to US tsp
- Write down your volume in milliliters (mL).
- Divide by 4.92892159375.
- Express the result in US teaspoons (tsp).
Example walkthrough:
Input: 59.14706 mL
Divide: 59.14706 ÷ 4.92892159375 = 12.00000
Output: 12 tsp (US)Precision, Rounding & Significant Figures
For everyday cooking, 1–2 decimals are often enough, but this tool defaults to 5 for high precision. In professional contexts (R&D, QA, clinical), match significant figures to your instruments and reporting standards to avoid rounding bias in chained calculations.
Use Cases of mL → tsp
- 🎂 Converting metric-first recipes into reliable teaspoon measures
- 🧃 Mapping micro-batch beverage or syrup volumes
- 💉 Translating household dosing into precise tsp values
- 🧫 Preparing small-volume lab solutions referenced in tsp
- 🏷️ Creating dual-unit labels and instructions
Quick Reference Table
| Milliliters (mL) | Teaspoons (US tsp) |
|---|---|
| 5 | 1.01442 |
| 10 | 2.02884 |
| 15 | 3.04326 |
| 20 | 4.05768 |
| 30 | 6.08652 |
| 50 | 10.14421 |
| 100 | 20.28842 |
| 250 | 50.72105 |
Frequently Asked Questions
How do you convert milliliters to teaspoons?
Use the formula: teaspoons (US) = mL ÷ 4.92892159375. One US teaspoon equals exactly 4.92892159375 milliliters.
How many teaspoons are in 10 mL?
10 mL ÷ 4.92892159375 ≈ 2.02884 teaspoons (US).
Is a US teaspoon the same as a metric teaspoon?
No. A US teaspoon is 4.92892159375 mL, while a metric teaspoon is exactly 5 mL. This page converts mL to US teaspoons.
How do I convert teaspoons back to milliliters?
Multiply by the same factor: mL = tsp × 4.92892159375. For example, 2 tsp × 4.92892159375 = 9.85784319 mL.
Do teaspoons measure weight or volume?
Teaspoons (tsp) measure volume. Weight depends on the substance’s density (e.g., 1 tsp of oil weighs less than 1 tsp of honey).
Tips for Accurate Small-Volume Measuring
- Use syringes or marked droppers for precise mL readings below 5 mL.
- Confirm whether guidance expects US (4.9289 mL) or metric (5 mL) teaspoons.
- Level the spoon to avoid over-measuring viscous liquids like honey or syrup.