500 tbsp = 1500 tsp (tablespoon → teaspoon)
500 tbsp = 1500 tsp
500 tablespoons (tbsp) equals 1500 teaspoons (tsp). The conversion uses the exact factor 3: 500 × 3 = 1500.
Teaspoons = Tablespoons × 3How 500 tablespoons compares to its arithmetic neighbours, converted to teaspoons.
| Relation | tablespoons | teaspoons |
|---|---|---|
| ÷10 | 50 tbsp | 150 tsp |
| ÷2 (half) | 250 tbsp | 750 tsp |
| ×1 (this value) | 500 tbsp | 1500 tsp |
| ×2 (double) | 1000 tbsp | 3000 tsp |
| ×5 | 2500 tbsp | 7500 tsp |
| ×10 | 5000 tbsp | 15000 tsp |
US tablespoons to teaspoons multiplies by 3. Two tablespoons are 6 teaspoons; the conversion lets you measure a tablespoon quantity with a teaspoon when the larger spoon is dirty or missing. Watch for non-US recipes: the Australian tablespoon is 4 teaspoons (20 mL vs 15 mL), so blindly applying the ×3 rule to an Australian recipe under-measures by a quarter. UK, Canadian, and US tablespoons all use the 3-teaspoon convention.
Recipe adjustments for spice intensity — halving a tablespoon of a strong ingredient like cayenne into more controllable teaspoon increments — use this simple 3:1 ratio. 1 tbsp is 3 tsp exactly; 2 tbsp is 6 tsp; 0.5 tbsp is 1.5 tsp. This is the most memorised of all volume conversions in a working kitchen, since cooks constantly split a tablespoon of a potent ingredient into teaspoon-sized additions to taste rather than adding it all at once.
Start with your value in tablespoons.
Multiply the tablespoon value by 3. This is the exact conversion factor from tablespoons to teaspoons.
The product is your value in teaspoons. For example, 5 tbsp × 3 = 15 tsp.
The exact factor from tablespoons to teaspoons is 3.
Teaspoons = Tablespoons × 3
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Tablespoons (tbsp) | Teaspoons (tsp) |
|---|---|
| 0.1 tbsp | 0.3 tsp |
| 0.25 tbsp | 0.75 tsp |
| 0.5 tbsp | 1.5 tsp |
| 1 tbsp | 3 tsp |
| 1.5 tbsp | 4.5 tsp |
| 2 tbsp | 6 tsp |
| 2.5 tbsp | 7.5 tsp |
| 3 tbsp | 9 tsp |
| 4 tbsp | 12 tsp |
| 5 tbsp | 15 tsp |
| 6 tbsp | 18 tsp |
| 7 tbsp | 21 tsp |
| 8 tbsp | 24 tsp |
| 9 tbsp | 27 tsp |
| 10 tbsp | 30 tsp |
| 12 tbsp | 36 tsp |
| 15 tbsp | 45 tsp |
| 20 tbsp | 60 tsp |
| 25 tbsp | 75 tsp |
| 30 tbsp | 90 tsp |
| 40 tbsp | 120 tsp |
| 50 tbsp | 150 tsp |
| 60 tbsp | 180 tsp |
| 75 tbsp | 225 tsp |
| 100 tbsp | 300 tsp |
| 125 tbsp | 375 tsp |
| 150 tbsp | 450 tsp |
| 200 tbsp | 600 tsp |
| 250 tbsp | 750 tsp |
| 300 tbsp | 900 tsp |
| 400 tbsp | 1200 tsp |
| 500 tbsp | 1500 tsp |
| 600 tbsp | 1800 tsp |
| 750 tbsp | 2250 tsp |
| 1000 tbsp | 3000 tsp |
| 1500 tbsp | 4500 tsp |
| 2000 tbsp | 6000 tsp |
| 2500 tbsp | 7500 tsp |
| 3000 tbsp | 9000 tsp |
| 4000 tbsp | 12000 tsp |
| 5000 tbsp | 15000 tsp |
| 7500 tbsp | 22500 tsp |
| 10000 tbsp | 30000 tsp |
| 15000 tbsp | 45000 tsp |
| 20000 tbsp | 60000 tsp |
| 25000 tbsp | 75000 tsp |
| 30000 tbsp | 90000 tsp |
| 40000 tbsp | 120000 tsp |
| 50000 tbsp | 150000 tsp |
| 100000 tbsp | 300000 tsp |
A US tablespoon of olive oil is about 14 mL. Nutrition labels typically use 1 tbsp = 15 mL. In teaspoons, that gives you: 1 tbsp = 3 tsp, 10 tbsp = 30 tsp, 100 tbsp = 300 tsp.
The US tablespoon equals 1/2 US fluid ounce, or 14.7868 mL — exactly 3 US teaspoons. The UK tablespoon is 17.7582 mL (5/8 imperial fl oz), the Australian metric tablespoon is 20 mL, and most other metric countries use 15 mL. Always check the source's convention before scaling a recipe.
The US teaspoon equals 1/3 of a US tablespoon, or about 4.929 mL. The metric teaspoon (used on most non-US nutrition labels) is exactly 5 mL — close enough that you can substitute freely in cooking but not in precise dosing.
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