Tablespoons to Teaspoons Converter (tbsp to tsp)

How to convert U.S. tablespoons to U.S. teaspoons

To convert U.S. tablespoons to U.S. teaspoons, multiply the number of U.S. tablespoons by 3.

Example: 2 tbsp = 6 tsp.

One U.S. tablespoon equals exactly 3 teaspoons.

Tablespoons to Teaspoons conversion chart

tbsp	tsp
0.25 tbsp	0.75 tsp
0.5 tbsp	1.5 tsp
0.75 tbsp	2.25 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
3.5 tbsp	10.5 tsp
4 tbsp	12 tsp
4.5 tbsp	13.5 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
11 tbsp	33 tsp
12 tbsp	36 tsp
13 tbsp	39 tsp
14 tbsp	42 tsp
15 tbsp	45 tsp
16 tbsp	48 tsp
18 tbsp	54 tsp
20 tbsp	60 tsp
24 tbsp	72 tsp
25 tbsp	75 tsp
30 tbsp	90 tsp
32 tbsp	96 tsp
35 tbsp	105 tsp
40 tbsp	120 tsp
45 tbsp	135 tsp
50 tbsp	150 tsp
55 tbsp	165 tsp
60 tbsp	180 tsp
64 tbsp	192 tsp
65 tbsp	195 tsp
70 tbsp	210 tsp
75 tbsp	225 tsp
80 tbsp	240 tsp
85 tbsp	255 tsp
90 tbsp	270 tsp
100 tbsp	300 tsp
110 tbsp	330 tsp
120 tbsp	360 tsp
125 tbsp	375 tsp
128 tbsp	384 tsp
150 tbsp	450 tsp
175 tbsp	525 tsp
180 tbsp	540 tsp
200 tbsp	600 tsp
220 tbsp	660 tsp
250 tbsp	750 tsp
300 tbsp	900 tsp
400 tbsp	1,200 tsp
500 tbsp	1,500 tsp
750 tbsp	2,250 tsp
1,000 tbsp	3,000 tsp

Metric vs. U.S. customary units

The United States uses U.S. customary units — inches, feet, miles, pounds, gallons and degrees Fahrenheit — for most everyday purposes. Canada officially adopted the metric system in the 1970s, so road signs, weather forecasts, gas pumps and food labels use kilometers, degrees Celsius, liters and grams. In practice many Canadians still use feet and inches for height, pounds for body weight and square feet for homes, which is why conversions come up constantly on both sides of the border.

Exact conversion factors

Since 1959 the inch, foot, yard, mile and pound have been defined in metric terms, so these conversions are exact, not approximations:

1 inch = 2.54 cm exactly, so 1 foot = 30.48 cm and 1 mile = 1.609344 km.
1 pound = 0.45359237 kg exactly; 1 ounce = 28.349523125 g.
1 U.S. gallon = 3.785411784 liters. The imperial gallon used in the U.K. is larger: 4.54609 liters.
1 acre = 4,046.8564224 m², and 1 hectare = 10,000 m² (about 2.471 acres).

Temperature is different because the scales have different zero points: °F = °C × 9/5 + 32 and °C = (°F − 32) × 5/9. Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F) at sea level, and −40 is the same in both scales.

Quick mental shortcuts

Kilometers to miles: multiply by 0.6 (100 km ≈ 60 miles; the exact figure is 62.1).
Kilograms to pounds: double it and add 10% (70 kg → 140 + 14 = 154 lb).
Celsius to Fahrenheit: double it and add 30 for a rough estimate (20 °C → 70 °F; the exact answer is 68 °F).
Liters to U.S. gallons: divide by 4 for a quick estimate (40 L ≈ 10 gallons; exactly 10.57).

Cooking and recipe conversions

U.S. recipes measure by volume — cups, tablespoons and teaspoons — while Canadian and most international recipes use milliliters and grams. A U.S. cup is about 237 mL, but Canadian "metric" measuring cups hold 250 mL, so the difference adds up in baking. For flour, sugar and butter, weighing in grams is more accurate than cups because the density of each ingredient differs.

Popular conversions

Pick a conversion below for a dedicated page with the formula, worked examples and a complete conversion chart.

Tips for accurate conversions

Keep full precision until the final step and round only the answer — rounding intermediate numbers can add noticeable errors, especially in recipes, construction and engineering. Always check which gallon, ounce or ton a source means: U.S. and imperial units share names but not sizes, and a "fluid ounce" measures volume while an "ounce" of weight measures mass. For temperatures, remember that a temperature difference converts differently from a temperature reading: a change of 10 °C equals a change of 18 °F, without adding 32.

Popular unit conversions

Frequently asked questions

How many centimeters are in an inch?

Exactly 2.54 centimeters. To convert inches to centimeters, multiply by 2.54; to convert centimeters to inches, divide by 2.54.

How do I convert kg to pounds?

Multiply kilograms by 2.20462. For example, 70 kg × 2.20462 = 154.3 lb.

What is the formula for Celsius to Fahrenheit?

Multiply by 9/5 (1.8) and add 32. For example, 25 °C × 1.8 + 32 = 77 °F.

Is a U.S. gallon the same as a Canadian gallon?

No. Canada sells gas by the liter, but when gallons are mentioned in Canada they are sometimes imperial gallons (4.546 L), which are about 20% larger than U.S. gallons (3.785 L).

How many square feet are in a square meter?

About 10.764 square feet. A 1,000 sq ft home is roughly 92.9 m².

Sources & methodology

This calculator was last reviewed on November 2, 2026. Figures are based on the following official and primary sources:

NIST – Handbook 44, Appendix C: General Tables of Units of Measurement

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