プラン

単位換算ツール

51 kg はストーンで約 8.03 st、つまり 8 ストーンと 0.44 ポンドです。この単位換算ツールは長さ・重さ・体積・面積・時間・温度の単位を正確に換算し、換算係数も表示します。

結果

値を入力して「計算」を押すと結果が表示されます。

公式

1 in=2.54 cm,1 lb=0.45359237 kg1\ \text{in} = 2.54\ \text{cm},\quad 1\ \text{lb} = 0.45359237\ \text{kg}

US and imperial units are defined exactly in metric units, so conversions are exact before rounding.

°F=°C×95+32°F = °C \times \tfrac{9}{5} + 32

Temperature scales have different zero points, so they use a formula rather than a single factor.

この計算ツールの使い方

  1. Choose the kind of quantity, then the units to convert from and to.
  2. US customary units are used for cups, pints and gallons.

解き方付き例題

Convert 1 mile to kilometres

1 mile is exactly 1609.344 metres.

So 1 mile = 1.609344 km.

Easy: 480 cm to m

100 cm = 1 m, so divide by 100.

480 cm ÷ 100 = 4.8 m.

Medium: 107 pounds in kg

1 lb = 0.45359237 kg exactly.

107 × 0.45359237 = 48.534384 kg (about 48.5 kg).

Hard: 51 kg in stone and pounds

1 stone = 14 lb = 6.35029318 kg, so 51 kg ÷ 6.35029318 = 8.031125 st.

The whole part is 8 stone. The 0.031125 st left over × 14 = 0.44 lb.

So 51 kg ≈ 8 st 0.44 lb (or 112.44 lb in total).

よくある間違い

  • Multiplying when you should divide: going to a bigger unit (cm → m) makes the number smaller.
  • Mixing US and UK units: a US gallon is 3.785 L, a UK gallon 4.546 L. This converter uses US cups, pints, quarts and gallons.
  • Reading 8.03 stone as 8 st 3 lb: the decimal part is a fraction of a stone; 0.03 st is about 0.44 lb.

よくある質問

How many ounces are in a quart?

1 US quart = 32 US fluid ounces, so 3 quarts = 96 fl oz.

How many gallons is 22 quarts?

There are 4 quarts in a gallon, so 22 quarts = 5.5 gallons.

How many pints are in 4 cups?

2 cups make a pint, so 4 cups = 2 pints (US).

How many seconds are in 3 minutes?

3 × 60 = 180 seconds. Choose Time in the converter for seconds, minutes, hours, days and weeks.

How many feet are in 2 km?

2 km = 2000 m, and 1 ft = 0.3048 m, so 2000 ÷ 0.3048 ≈ 6561.68 ft.

Are gallons US or UK?

US gallons (3.785411784 L). A UK gallon is 4.54609 L.

How accurate is it?

Conversion factors are exact definitions; the only rounding is to the decimal places you choose.