Formats, units, and options for Weight Converter
Weight Converter is a calculator tool — it works with numbers you type in, not uploaded files. Knowing the supported units and how conversions are calculated makes your workflow smoother.
Supported units (16 total)
Metric units:
- Kilogram (kg) — the SI base unit of mass, equal to 1000 grams
- Gram (g) — 1/1000 of a kilogram
- Milligram (mg) — 1/1000 of a gram
- Metric ton (t) — 1000 kilograms
- Carat (ct) — commonly used for gemstones, 1 ct = 0.2 g
Imperial / US units:
- Pound (lb) — 1 lb = 0.453592 kg (exactly 453.592 g)
- Ounce (oz) — 1 oz = 28.3495 g
- Stone (st) — chiefly UK, 1 st = 14 lb = 6.35029 kg
- US short ton — 2000 lb
- Long ton — 2240 lb
Specialty units:
- Troy ounce (oz t) — used for precious metals, 1 oz t = 31.1035 g
- Grain (gr) — 1 gr = 64.79891 mg
Key conversion factors
- 1 kg = 2.20462 lb
- 1 lb = 453.592 g
- 1 oz = 28.3495 g
- 1 st = 6.35029 kg
- 1 metric ton = 1000 kg = 2204.62 lb
Options and accuracy
The tool shows results rounded to meaningful precision (up to 10 significant figures where needed) so everyday conversions are clean while scientific work stays accurate. The Mass table option displays a full unit-by-unit reference grid.
Getting the best results
- Enter the source value in the field matching your unit, then read every other field
- Use the Mass table for quick lookup when you need many conversions at once
- Results compute locally in your browser, so there is no waiting and no upload
Verdict
Weight Converter covers 16 mass units with precise factors and useful presentation options, all computed locally with no file ever leaving your device.