Updated · Methodology: named formula library
1 tsp = 4.929 mL. To convert tsp to mL, multiply by 4.929. To convert mL back to tsp, multiply by 0.202884.
Teaspoons to Milliliters Converter
Convert tsp to mL instantly. Free unit conversion calculator.
1 tsp = 4.9289 mL.
1 tsp = 4.9289 mL. To convert tsp to mL, multiply by 4.9289. To go the other direction, multiply mL by 0.202884.
How the conversion works
The relationship is linear: every value of tsp maps to exactly 4.9289 mL, scaling proportionally. 1 tsp = 4.9289 mL.
Common conversion values
- 1 tsp = 4.9289 mL
- 10 tsp = 49.2892 mL
- 100 tsp = 492.89 mL
- 1,000 tsp = 4928.92 mL
See the [forward](#chart) and [reverse](#reverse-chart) charts below for additional values.
Quick mental shortcut
Multiply by 4.9289 (tsp → mL) or by 0.202884 (mL → tsp).
Accuracy note
The factor used here (4.9289) is rounded to 6 significant figures, which is sufficient for most everyday use including cooking, fitness, height comparisons, and shipping. For scientific, engineering, or trade-regulated contexts, use the full-precision factor or the official defining relationship cited above. Conversions in this calculator are computed at full double-precision; only the displayed values are rounded.
tsp to mL Chart
| tsp | mL |
|---|---|
| 1 tsp | 4.929 mL |
| 2 tsp | 9.858 mL |
| 3 tsp | 14.787 mL |
| 5 tsp | 24.645 mL |
| 10 tsp | 49.289 mL |
| 20 tsp | 98.578 mL |
| 25 tsp | 123.22 mL |
| 50 tsp | 246.45 mL |
| 75 tsp | 369.67 mL |
| 100 tsp | 492.89 mL |
| 200 tsp | 985.78 mL |
| 500 tsp | 2,464.46 mL |
| 1,000 tsp | 4,928.92 mL |
| 5,000 tsp | 24,645 mL |
Multiplier: × 4.929
mL to tsp Chart
| mL | tsp |
|---|---|
| 1 mL | 0.202884 tsp |
| 2 mL | 0.405768 tsp |
| 3 mL | 0.608653 tsp |
| 5 mL | 1.014 tsp |
| 10 mL | 2.029 tsp |
| 20 mL | 4.058 tsp |
| 25 mL | 5.072 tsp |
| 50 mL | 10.144 tsp |
| 75 mL | 15.216 tsp |
| 100 mL | 20.288 tsp |
| 200 mL | 40.577 tsp |
| 500 mL | 101.44 tsp |
| 1,000 mL | 202.88 tsp |
| 5,000 mL | 1,014.42 tsp |
Multiplier: × 0.202884
Common Specific Values
10 tsp to mL
10 tsp equals 49.289 mL. (10 × 4.929 = 49.289)
25 tsp to mL
25 tsp equals 123.22 mL. (25 × 4.929 = 123.22)
50 tsp to mL
50 tsp equals 246.45 mL. (50 × 4.929 = 246.45)
100 tsp to mL
100 tsp equals 492.89 mL. (100 × 4.929 = 492.89)
500 tsp to mL
500 tsp equals 2,464.46 mL. (500 × 4.929 = 2,464.46)
When to Use This Calculator
- Convert between metric and imperial without searching for factors.
- Verify a unit-aware calculation in engineering, science, or cooking.
- Translate specifications across U.S. and international standards.
Limitations & Common Mistakes
- Results are estimates, real-world outcomes depend on factors not captured in a simplified calculation.
- Always verify critical numbers against an authoritative source or domain expert before acting on them.
Frequently Asked Questions
How does the Teaspoons to Milliliters Converter work?
Enter your value (default: 1) and any other inputs; the calculator instantly applies its teaspoons to ml formula and shows the result with details. All math runs in your browser; nothing is sent to a server.
Is the Teaspoons to Milliliters Converter accurate for volume decisions?
It uses standard, documented formulas that match published references. For high-stakes volume decisions, verify the result against an authoritative source (industry calculator, professional advisor, or government data). The calculator is a planning estimate, not a substitute for professional judgment.
What inputs does the Teaspoons to Milliliters Converter require?
1 input: Value. Each has a sensible default; replace with your own values to get a result tailored to your situation.
Can I bookmark or share the Teaspoons to Milliliters Converter?
Yes — the URL is stable: https://www.calcintel.com/calculator/teaspoons-to-ml. Inputs reset to defaults on each visit (no input is stored), so screenshot or copy the result if you want to preserve a specific scenario.
Is 1 teaspoon the same as 5 mL?
1 tsp equals 4.9289 mL — that's effectively the same as 5 ml. Use the chart below for exact values at common quantities.
Is 2 teaspoons the same as 10 mL?
2 tsp equals 9.8578 mL — that's effectively the same as 10 ml. Use the chart below for exact values at common quantities.
What does the T stand for in baking?
1 tsp = 4.9289 mL. To convert tsp to mL, multiply by 4.9289; to convert mL back to tsp, multiply by 0.202884. See the conversion chart below for ready-made values.
Is 1 tsp 30 mL?
1 tsp equals 4.9289 mL — that's different from 30 ml. Use the chart below for exact values at common quantities.
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Source: BLS Consumer Price Index, 2026.