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Stone to Pounds Converter

Convert stone (st) to pounds (lb) with the exact formula, worked examples and a full conversion chart.

Updated By TrueCalcu Editorial Team Sources
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How to convert stone to pounds

To convert stone to pounds, multiply the number of stone by 14.

Example: 10 st = 140 lb.

One stone is exactly 14 pounds.

Stone to Pounds conversion chart

stlb
0.25 st3.5 lb
0.5 st7 lb
0.75 st10.5 lb
1 st14 lb
1.5 st21 lb
2 st28 lb
2.5 st35 lb
3 st42 lb
3.5 st49 lb
4 st56 lb
4.5 st63 lb
5 st70 lb
6 st84 lb
7 st98 lb
8 st112 lb
9 st126 lb
10 st140 lb
11 st154 lb
12 st168 lb
13 st182 lb
14 st196 lb
15 st210 lb
16 st224 lb
18 st252 lb
20 st280 lb
24 st336 lb
25 st350 lb
30 st420 lb
32 st448 lb
35 st490 lb
40 st560 lb
45 st630 lb
50 st700 lb
55 st770 lb
60 st840 lb
64 st896 lb
65 st910 lb
70 st980 lb
75 st1,050 lb
80 st1,120 lb
85 st1,190 lb
90 st1,260 lb
100 st1,400 lb
110 st1,540 lb
120 st1,680 lb
125 st1,750 lb
128 st1,792 lb
150 st2,100 lb
175 st2,450 lb
180 st2,520 lb
200 st2,800 lb
220 st3,080 lb
250 st3,500 lb
300 st4,200 lb
400 st5,600 lb
500 st7,000 lb
750 st10,500 lb
1,000 st14,000 lb

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:

Spotted an error? Tell us and we'll fix it quickly. Read how we build and update our tools in our editorial policy.

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