NiftyRecipe Online energy conversion
MJ/kWh 0.277778 kJ/kcal 0.239006 kJ/kWh 0.000278 BTU/kWh 0.000293 kcal/cal 1000 cal/BTU 0.003966
J / MJ

1 joule in megajoule

0.000001 megajoule

1 J = 0.000001 MJ · factor

Reverse: 1 megajoule ≈ 1000000 joule. Use the reference table for common values.

Enter a value and click Calculate - opens the page with the new result

Common values

megajoule to joule 2 joules in megajoule 5 joules in megajoule 10 joules in megajoule 20 joules in megajoule 25 joules in megajoule 50 joules in megajoule 75 joules in megajoule 100 joules in megajoule 120 joules in megajoule 150 joules in megajoule

Same amount, other units

1 joule → kcal 1 joule → kJ
Formula: joule to megajoule

MJ = J × 0.000001 (1 J = 0.000001 MJ)

Reference values: joule → megajoule
J MJ
1 J 0.000001 MJ
100 J 0.0001 MJ
200 J 0.0002 MJ
500 J 0.0005 MJ
1000 J 0.001 MJ
2000 J 0.002 MJ

All amounts for this pair

FAQ for J → MJ
1 joule in megajoule

NiftyRecipe converts 1 joule to 0.000001 megajoule with a fixed SI-linked factor.

Kilojoules and megajoules describe energy on a scientific scale. The ratio applied here is 1 joule = 0.000001 megajoule, so this amount is 0.000001 megajoule. Reverse check: 1 megajoule ≈ 1000000 joule. That helps when a lab notebook or spreadsheet only lists one column.

Change the value in the calculator for homework, datasheets or rough process estimates. The wording stays technical on purpose so these pages read differently from food-label articles on the same site.