Weight Conversion Chart Guide

5 min read•June 1, 2025•Reviewed: June 1, 2026

✓Reviewed by Apex Conversion Editorial Team · Last reviewed June 1, 2026

Weight conversion charts are useful when you need a quick lookup without having to calculate every time. Whether you are checking luggage weight in a hotel room, reading European product packaging, or comparing fitness metrics across systems, a reference table saves time and reduces errors.

This guide covers the most commonly needed weight conversions: kilograms to pounds, pounds to kilograms, and grams to ounces. The conversion factors never change, so these tables are permanent references.

Kilograms ↔ Pounds (Body Weight Range)

 kg    lb        kg    lb
────  ─────     ────  ─────
  40   88.2       75  165.3
  45   99.2       80  176.4
  50  110.2       85  187.4
  55  121.3       90  198.4
  60  132.3       95  209.4
  65  143.3      100  220.5
  70  154.3      110  242.5

Pounds ↔ Kilograms (Body Weight Range)

 lb    kg       lb     kg
────  ─────    ────   ─────
 100  45.36    180    81.65
 110  49.90    190    86.18
 120  54.43    200    90.72
 130  58.97    210    95.25
 140  63.50    220    99.79
 150  68.04    230   104.33
 160  72.57    250   113.40
 170  77.11    300   136.08

Grams ↔ Ounces (Cooking Range)

  g    oz          g    oz
────  ─────       ───  ─────
  28   1.0        250   8.82
  50   1.76       300  10.58
 100   3.53       400  14.11
 115   4.06       454  16.00  (= 1 lb)
 125   4.41       500  17.64
 200   7.05      1000  35.27  (= 1 kg)

Common Weight Reference Points

Luggage: most US airlines allow 50 lb (22.7 kg) per checked bag. Most international carriers use 23 kg (50.7 lb). A bag at 49 lb is about 22.2 kg — safely within both limits.

Gym weights: a standard US barbell is 45 lb (20.4 kg). A 25 kg (55.1 lb) bumper plate is commonly marked in red. A 20 kg (44.1 lb) barbell is the Olympic standard. A 5 lb dumbbell is about 2.27 kg.

Stones and Pounds (UK Usage)

The UK uses stones (st) alongside pounds for body weight in informal conversation. 1 stone = 14 pounds = 6.350 kg. To convert from kg to stones: divide by 6.350. To get the remaining pounds: multiply the decimal portion by 14.

Example: 80 kg ÷ 6.350 = 12.60 stone. The decimal 0.60 × 14 = 8.4 lb, so 80 kg ≈ 12 stone 8 lb. Most UK bathroom scales now show all three: stones-and-pounds, kilograms, and pounds.

Quick Tips

✓
Print or bookmark this page as a reference when traveling internationally or shopping at metric grocery stores.
✓
For cooking: 100 g ≈ 3.5 oz and 500 g ≈ 1.1 lb are the two most useful anchors.
✓
For body weight: 1 kg change ≈ 2.2 lb. A 5 kg loss is about 11 lb.
✓
For shipping: most international couriers round to the nearest 0.5 kg. Convert your lb weight to kg before booking.

Frequently Asked Questions

What is 23 kg in pounds?

23 kg × 2.20462 = 50.7 lb. This is the standard international airline checked baggage limit.

What is 10 stone in kg?

10 stone × 6.350 kg/stone = 63.5 kg = 140.0 lb.

How many ounces in a kilogram?

1 kg = 35.274 oz. For cooking, the approximation 35 oz per kg is close enough for most purposes.

What is the heaviest weight I can convert on this chart?

The interactive converter at the top handles any value. The charts above cover the most common ranges — body weight (40–300 lb / 18–136 kg) and cooking weights (28–1000 g).

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