Edit either value. Decimals and scientific notation supported.
1
gr
Decimal
Stone + pounds
Whole stone; pounds from 0 to less than 14. Non-negative values.
esc
Kilogramkg
Gramg
Milligrammg
Microgramµg
Poundlb
Ounceoz
Stonest
Metric tonnet
US short tonton (US)
Imperial long tonton (UK)
Imperial hundredweightcwt (UK)
US hundredweightcwt (US)
Imperial quarterqr (UK)
Avoirdupois dramdr (av)
Graingr
Pennyweightdwt
Troy ounceoz t
Metric quintalq
No units found. Try a name or symbol.
Stone + pounds
6.479891e-8
t
Decimal
Stone + pounds
Whole stone; pounds from 0 to less than 14. Non-negative values.
esc
Kilogramkg
Gramg
Milligrammg
Microgramµg
Poundlb
Ounceoz
Stonest
Metric tonnet
US short tonton (US)
Imperial long tonton (UK)
Imperial hundredweightcwt (UK)
US hundredweightcwt (US)
Imperial quarterqr (UK)
Avoirdupois dramdr (av)
Graingr
Pennyweightdwt
Troy ounceoz t
Metric quintalq
No units found. Try a name or symbol.
Stone + pounds
CONVERSION
1 gr ≈ 6.479891e-8 t
6 significant figures
10 significant figures
15 significant figures
Precision changes displayed rounding, not calculation accuracy.
FORMULAt = gr × 6.479891e-8
FORMULA & EXAMPLES
How to convert Grains to metric tonnes
t = gr × 6.479891e-8
Multiply the gr reading by 6.479891e-8.
Worked examples
1 gr ≈ 6.479891e-8 t
1 × 6.479891e-8 ≈ 6.479891e-8
7000 gr ≈ 0.00045359237 t
7000 × 6.479891e-8 ≈ 0.00045359237
Frequently asked questions
Which ton definition does this conversion use?
A metric tonne is 1,000 kg, a US short ton is 2,000 lb, and an Imperial long ton is 2,240 lb. Use the variant explicitly named in the converter.
Grains to metric tonnes table
Fixed reference · Grain to Metric tonne
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
Grain (gr)
Metric tonne (t)
0
0
0.1
6.479891e-9
0.5
3.2399455e-8
1
6.479891e-8
2
1.2959782e-7
5
3.2399455e-7
10
6.479891e-7
25
0.00000161997275
50
0.0000032399455
100
0.000006479891
1000
0.00006479891
Table results use 10 significant figures; decimal formula coefficients use up to 15. Calculations use the unit definitions before rounding. Extra digits do not improve measurement accuracy.