Weight & Mass Converter

A weight converter translates mass between unit systems — the everyday task of switching between lbs and kg, grams and ounces, or metric tons and pounds. This calculator normalizes every value through kilograms (SI base unit) using exact definitions where international standards specify them.

Whether you read a gym scale in pounds but your app expects kilograms, or a recipe lists grams while your scale shows ounces, enter a value, pick From and To, and copy the result. All math stays in your browser.

The international avoirdupois pound is defined as exactly 0.45359237 kg. So 1 lb in kg, one pound in kg, and 1lbs in kg all resolve to about 0.454 kg (rounded). Reverse: 1 kg ≈ 2.205 lb.

Lbs to kg divides pounds by 2.20462 (or multiplies by 0.453592). Lb kilogram and pounds kilograms searches describe the same imperial-to-metric hop. Kilogram lbs and kilo lb run the opposite direction — multiply kg by 2.20462 for pounds.

Quick examples: 5 lb to kg ≈ 2.27 kg · 10 lbs to kg ≈ 4.54 kg · 2 lbs to kg ≈ 0.91 kg · 6 lbs to kg ≈ 2.72 kg. Enter any number above for exact figures.

Kg to lbs, convert kg to lbs, and kilos to pounds multiply kilograms by 2.2046226218. Kg to pound (singular) uses the same factor.

Body-weight examples people look up constantly:

• 50 kg in pounds ≈ 110.2 lb
• 60 kg in pounds / 60 kilos in pounds ≈ 132.3 lb
• 70 kg in pounds / 70 kg to lbs ≈ 154.3 lb
• 80 kg in pounds ≈ 176.4 lb
• 1 kg to pounds ≈ 2.205 lb · 10 kg to pounds ≈ 22.05 lb

Mid-range checks: 55 kg to lbs ≈ 121.3 · 62 kg to lbs ≈ 136.7 · 72 kg to lbs ≈ 158.7 · 85 kg to lbs ≈ 187.4. Select Kilogram → Pound and type your value for precision beyond rounding.

US scales often read in pounds; medical and sports science increasingly uses kilograms. A single kg to pound factor unlocks every lookup:

• 130 lbs to kg ≈ 58.97 kg
• 150 pounds in kg ≈ 68.04 kg
• 160 lbs to kg / 160 pounds in kg ≈ 72.57 kg
• 165 lbs to kg ≈ 74.84 kg
• 180 lbs to kg ≈ 81.65 kg
• 190 lbs to kg ≈ 86.18 kg

Lighter entries: 20 pounds in kg ≈ 9.07 · 30 pounds in kg ≈ 13.61 · 100 pound to kg ≈ 45.36. Heavier: 175 lbs to kg ≈ 79.38 · 185 lbs to kg ≈ 83.91. Fractional weights like 4.5 lb to kg or 5.5 lbs to kg work the same — enter decimals in the input field.

Metric mass scales by thousands: 1 kilogram = 1,000 grams. Grams in a kilogram is always 1,000. Conversion grams to kilo, conversion of grams to kilo, and grams to kilo conversion divide grams by 1,000. Reverse — conversion of kilos to grams, convert grams to kilo (reverse), kg to gram converter — multiply kg by 1,000.

Grams and kilograms conversion appears in cooking, lab work, and shipping small parcels. Grams kg and grams and kilograms on nutrition labels: 2,500 g = 2.5 kg. Kg grams conversion is symmetric — pick Gram or Kilogram as input.

Oz to kg: 1 avoirdupois oz = 28.3495 g ≈ 0.02835 kg. Sixteen ounces make one pound. For kilos to lbs and oz, convert kg → total pounds, then take the integer as pounds and multiply the decimal remainder by 16 for ounces — or read lb and oz separately in two steps.

1 gram to lbs ≈ 0.002205 lb — useful for spice weights. 1 carat in grams = 0.2 g (200 mg) for gemstones. Ton to kg: one metric tonne = 1,000 kg; US short ton ≈ 907 kg; UK long ton ≈ 1,016 kg — select the correct ton type in the unit list.

Gold and silver use troy ounces (31.1035 g), not avoirdupois ounces — pick Troy Ounce when converting bullion prices.

Searches for bmi to kg conversion, body mass index converter, convert kg to bmi, or kg to bmi converter usually mean two different things: converting weight units, or computing BMI from weight and height.

BMI = weight (kg) ÷ height (m)². This tool converts the weight portion — e.g. 155 lbs to kg ≈ 70.3 kg before you plug into a BMI formula with height. It does not compute BMI by itself because height is required. Convert lbs ↔ kg here first, then use a dedicated BMI calculator with your height in meters or centimeters.

Use avoirdupois pounds for body weight and groceries; do not mix with troy pounds (rare, used for some precious-metal trade). UK readers may think in stones (1 st = 14 lb ≈ 6.35 kg) — supported in the unit dropdown.

For shipping labels, round to the precision the carrier requires — often 0.1 kg or whole pounds. Science and medicine may need four or more decimal places; the converter shows enough digits for either. Re-check critical doses or load limits with a second unit pair (g ↔ mg) if working near thresholds.