Mass Conversion Chart: kg, lb, oz, ton

Mass conversion chart: mg, g, kg, metric tonne, oz, lb, short ton, long ton and troy ounce equivalents, with common values such as 10 kg or 100 lb.

For reference. Verify the application conditions and the applicable standard.

Visible rows: 36

Unit equivalents

Mass conversion chart
From	mg	g	kg	t	oz	lb	ton (US)	ton (UK)	oz t
	Equals, in the unit of the column
1 mg	1	0.001	1×10⁻⁶	1×10⁻⁹	0.00003527396	2.204623×10⁻⁶	1.102311×10⁻⁹	9.842065×10⁻¹⁰	0.00003215075
1 g	1000	1	0.001	1×10⁻⁶	0.03527396	0.002204623	1.102311×10⁻⁶	9.842065×10⁻⁷	0.03215075
1 kg	1000000	1000	1	0.001	35.27396	2.204623	0.001102311	0.0009842065	32.15075
1 t	1×10⁹	1000000	1000	1	35273.96	2204.623	1.102311	0.9842065	32150.75
1 oz	28349.52	28.34952	0.02834952	0.00002834952	1	0.0625	0.00003125	0.00002790179	0.9114583
1 lb	453592.4	453.5924	0.4535924	0.0004535924	16	1	0.0005	0.0004464286	14.58333
1 ton (US)	907184700	907184.7	907.1847	0.9071847	32000	2000	1	0.8928571	29166.67
1 ton (UK)	1.016047×10⁹	1016047	1016.047	1.016047	35840	2240	1.12	1	32666.67
1 oz t	31103.48	31.10348	0.03110348	0.00003110348	1.097143	0.06857143	0.00003428571	0.00003061224	1

Common values

Common values
From	mg	g	kg	t	oz	lb	ton (US)	ton (UK)	oz t
	Equals, in the unit of the column
1 kg	1000000	1000	1	0.001	35.27396	2.204623	0.001102311	0.0009842065	32.15075
2 kg	2000000	2000	2	0.002	70.54792	4.409245	0.002204623	0.001968413	64.30149
5 kg	5000000	5000	5	0.005	176.3698	11.02311	0.005511557	0.004921033	160.7537
10 kg	10000000	10000	10	0.01	352.7396	22.04623	0.01102311	0.009842065	321.5075
20 kg	20000000	20000	20	0.02	705.4792	44.09245	0.02204623	0.01968413	643.0149
50 kg	50000000	50000	50	0.05	1763.698	110.2311	0.05511557	0.04921033	1607.537
100 kg	100000000	100000	100	0.1	3527.396	220.4623	0.1102311	0.09842065	3215.075
200 kg	200000000	200000	200	0.2	7054.792	440.9245	0.2204623	0.1968413	6430.149
500 kg	500000000	500000	500	0.5	17636.98	1102.311	0.5511557	0.4921033	16075.37
1000 kg	1×10⁹	1000000	1000	1	35273.96	2204.623	1.102311	0.9842065	32150.75
1 lb	453592.4	453.5924	0.4535924	0.0004535924	16	1	0.0005	0.0004464286	14.58333
2 lb	907184.7	907.1847	0.9071847	0.0009071847	32	2	0.001	0.0008928571	29.16667
5 lb	2267962	2267.962	2.267962	0.002267962	80	5	0.0025	0.002232143	72.91667
10 lb	4535924	4535.924	4.535924	0.004535924	160	10	0.005	0.004464286	145.8333
20 lb	9071847	9071.847	9.071847	0.009071847	320	20	0.01	0.008928571	291.6667
50 lb	22679620	22679.62	22.67962	0.02267962	800	50	0.025	0.02232143	729.1667
100 lb	45359240	45359.24	45.35924	0.04535924	1600	100	0.05	0.04464286	1458.333
200 lb	90718470	90718.47	90.71847	0.09071847	3200	200	0.1	0.08928571	2916.667
500 lb	226796200	226796.2	226.7962	0.2267962	8000	500	0.25	0.2232143	7291.667
1000 lb	453592400	453592.4	453.5924	0.4535924	16000	1000	0.5	0.4464286	14583.33
1 t	1×10⁹	1000000	1000	1	35273.96	2204.623	1.102311	0.9842065	32150.75
2 t	2×10⁹	2000000	2000	2	70547.92	4409.245	2.204623	1.968413	64301.49
5 t	5×10⁹	5000000	5000	5	176369.8	11023.11	5.511557	4.921033	160753.7
10 t	1×10¹⁰	10000000	10000	10	352739.6	22046.23	11.02311	9.842065	321507.5
20 t	2×10¹⁰	20000000	20000	20	705479.2	44092.45	22.04623	19.68413	643014.9
50 t	5×10¹⁰	50000000	50000	50	1763698	110231.1	55.11557	49.21033	1607537
100 t	1×10¹¹	100000000	100000	100	3527396	220462.3	110.2311	98.42065	3215075

Quick answers

1 oz = 28.34952 g = 0.02834952 kg. View in table
1 lb = 453.5924 g = 0.4535924 kg. View in table
1 ton (US) = 907184.7 g = 907.1847 kg. View in table
1 ton (UK) = 1016047 g = 1016.047 kg. View in table
1 oz t = 31.10348 g = 0.03110348 kg. View in table

Conditions and notes

Conversion between mass units only. Factors are exact definitions and displayed numbers are rounded to 7 significant digits.

oz and lb are avoirdupois units. The troy ounce has its own column (oz t) and is about 9.7 percent larger.
ton (US) is 2000 lb, ton (UK) is 2240 lb and t is 1000 kg. Mixing them up causes an error of up to 12 percent.
Mass and weight are not the same thing. Weight is a force and its unit is N or kgf.

Each row is a starting value. The columns show the same mass in the other units. For example, the 1 lb row gives 0.45359237 in the kg column. The shaded diagonal cells are the unit itself. The common values section below reads typical masses such as 10 kg, 100 lb or 5 t at a glance.

The pound is exactly 0.45359237 kilograms and the ounce is one sixteenth of it. The short ton is 2000 lb in the US and the long ton is 2240 lb in the UK. The metric tonne (t) is 1000 kg. The three tons are not the same, so if a document only says ton, check which one it means.

The troy ounce is used only for precious metals and is larger than the avoirdupois ounce. The chart converts mass. For force units such as the kilogram force, see the force conversion chart.

Sources

This table is for preliminary reference. Check the applicable standard and product conditions before use.

Source 1. SP 811:2008. Accessed: 2026-10-16
Source 2. SP 811:2008. Accessed: 2026-10-16
Source 3. HB 44:2026. Accessed: 2026-10-16
Source 4. UKPGA 1985 C 72. Accessed: 2026-10-16

Data version: 2026-10-16