Compost C:N calculator
Ideal ratio between 25-35:1
Name
First Name
Last Name
Date
-
Day
-
Month
Year
Date
Compost reference number
eg. DL01
Email
*
Carbon (brown) rich inputs
1) Carbon input
*
nil
Bark- hardwood- 223:1
Bark- softwood- 496:1
Cardboard- 563:1
Fruit waste- 40:1
Garden trimmings (few twigs) 30:1
Hard- woodchip- 560:1
Hay- non legume- 32:1
Leaves- 54:1
Newspaper- 622:1
Rice hulls- 121:1
Sawdust- 442:1
Shrub trimmings (many twigs)- 53:1
Soft- woodchip- 641:1
Straw- general- 80:1
Straw- oat- 60:1
Straw-wheat- 127:1
1) Volume (litres)
1) Carbon content
1) Nitrogen content
2) Carbon input
nil
Bark- hardwood- 223:1
Bark- softwood- 496:1
Cardboard- 563:1
Fruit waste- 40:1
Garden trimmings (few twigs) 30:1
Hard- woodchip- 560:1
Hay- non legume- 32:1
Leaves- 54:1
Newspaper- 622:1
Rice hulls- 121:1
Sawdust- 442:1
Shrub trimmings (many twigs)- 53:1
Soft- woodchip- 641:1
Straw- general- 80:1
Straw- oat- 60:1
Straw-wheat- 127:1
2) Volume (litres)
2) Carbon content
2) Nitrogen content
3) Carbon input
nil
Bark- hardwood- 223:1
Bark- softwood- 496:1
Cardboard- 563:1
Fruit waste- 40:1
Garden trimmings (few twigs) 30:1
Hard- woodchip- 560:1
Hay- non legume- 32:1
Leaves- 54:1
Newspaper- 622:1
Rice hulls- 121:1
Sawdust- 442:1
Shrub trimmings (many twigs)- 53:1
Soft- woodchip- 641:1
Straw- general- 80:1
Straw- oat- 60:1
Straw-wheat- 127:1
3) Volume (litres)
3) Carbon content
3) Nitrogen content
4) Carbon input
nil
Bark- hardwood- 223:1
Bark- softwood- 496:1
Cardboard- 563:1
Fruit waste- 40:1
Garden trimmings (few twigs) 30:1
Hard- woodchip- 560:1
Hay- non legume- 32:1
Leaves- 54:1
Newspaper- 622:1
Rice hulls- 121:1
Sawdust- 442:1
Shrub trimmings (many twigs)- 53:1
Soft- woodchip- 641:1
Straw- general- 80:1
Straw- oat- 60:1
Straw-wheat- 127:1
4) Volume (litres)
4) Carbon content
4) Nitrogen content
5) Carbon input
nil
Bark- hardwood- 223:1
Bark- softwood- 496:1
Cardboard- 563:1
Fruit waste- 40:1
Garden trimmings (few twigs) 30:1
Hard- woodchip- 560:1
Hay- non legume- 32:1
Leaves- 54:1
Newspaper- 622:1
Rice hulls- 121:1
Sawdust- 442:1
Shrub trimmings (many twigs)- 53:1
Soft- woodchip- 641:1
Straw- general- 80:1
Straw- oat- 60:1
Straw-wheat- 127:1
5) Volume (litres)
5) Carbon content
5) Nitrogen content
6) Carbon input
nil
Bark- hardwood- 223:1
Bark- softwood- 496:1
Cardboard- 563:1
Fruit waste- 40:1
Garden trimmings (few twigs) 30:1
Hard- woodchip- 560:1
Hay- non legume- 32:1
Leaves- 54:1
Newspaper- 622:1
Rice hulls- 121:1
Sawdust- 442:1
Shrub trimmings (many twigs)- 53:1
Soft- woodchip- 641:1
Straw- general- 80:1
Straw- oat- 60:1
Straw-wheat- 127:1
6) Volume (litres)
6) Carbon content
6) Nitrogen content
7) Carbon input
nil
Bark- hardwood- 223:1
Bark- softwood- 496:1
Cardboard- 563:1
Fruit waste- 40:1
Garden trimmings (few twigs) 30:1
Hard- woodchip- 560:1
Hay- non legume- 32:1
Leaves- 54:1
Newspaper- 622:1
Rice hulls- 121:1
Sawdust- 442:1
Shrub trimmings (many twigs)- 53:1
Soft- woodchip- 641:1
Straw- general- 80:1
Straw- oat- 60:1
Straw-wheat- 127:1
7) Volume (litres)
7) Carbon content
7) Nitrogen content
8) Carbon input
nil
Bark- hardwood- 223:1
Bark- softwood- 496:1
Cardboard- 563:1
Fruit waste- 40:1
Garden trimmings (few twigs) 30:1
Hard- woodchip- 560:1
Hay- non legume- 32:1
Leaves- 54:1
Newspaper- 622:1
Rice hulls- 121:1
Sawdust- 442:1
Shrub trimmings (many twigs)- 53:1
Soft- woodchip- 641:1
Straw- general- 80:1
Straw- oat- 60:1
Straw-wheat- 127:1
8) Volume (litres)
8) Carbon content
8) Nitrogen content
9) Carbon input
nil
Bark- hardwood- 223:1
Bark- softwood- 496:1
Cardboard- 563:1
Fruit waste- 40:1
Garden trimmings (few twigs) 30:1
Hard- woodchip- 560:1
Hay- non legume- 32:1
Leaves- 54:1
Newspaper- 622:1
Rice hulls- 121:1
Sawdust- 442:1
Shrub trimmings (many twigs)- 53:1
Soft- woodchip- 641:1
Straw- general- 80:1
Straw- oat- 60:1
Straw-wheat- 127:1
9) Volume (litres)
9) Carbon content
9) Nitrogen content
10) Carbon input
nil
Bark- hardwood- 223:1
Bark- softwood- 496:1
Cardboard- 563:1
Fruit waste- 40:1
Garden trimmings (few twigs) 30:1
Hard- woodchip- 560:1
Hay- non legume- 32:1
Leaves- 54:1
Newspaper- 622:1
Rice hulls- 121:1
Sawdust- 442:1
Shrub trimmings (many twigs)- 53:1
Soft- woodchip- 641:1
Straw- general- 80:1
Straw- oat- 60:1
Straw-wheat- 127:1
10) Volume (litres)
10) Carbon content
10) Nitrogen content
Total carbon volume (litres)
C) Final C:N ratio
C) Total carbon content
C) Total nitrogen content
Total compost volume (litres)
Final C:N ratio
Nitrogen (green) rich inputs
1) Nitrogen input
*
nil
Chicken manure- 6:1
Coffee grounds- 20:1
Cow manure- 15:1
Grass clippings (fresh)- 17:1
Hay- legume- 16:1
Horse manure- 30:1
Seaweed- 17:1
Sheep manure - 16:1
Tree trimmings- 16:1
Vegetable produce- 19:1
Food scraps/ Vegetable waste- 12:1
Weeds- 20:1
1) Volume (litres)
1) Carbon content
1) Nitrogen content
2) Nitrogen input
Please Select
Chicken manure- 6:1
Coffee grounds- 20:1
Cow manure- 15:1
Grass clippings (fresh)- 17:1
Hay- legume- 16:1
Horse manure- 30:1
Seaweed- 17:1
Sheep manure - 16:1
Tree trimmings- 16:1
Vegetable produce- 19:1
Food scraps/ Vegetable waste- 12:1
Weeds- 20:1
2) Volume (litres)
2) Carbon content
2) Nitrogen content
3) Nitrogen input
Please Select
Chicken manure- 6:1
Coffee grounds- 20:1
Cow manure- 15:1
Grass clippings (fresh)- 17:1
Hay- legume- 16:1
Horse manure- 30:1
Seaweed- 17:1
Sheep manure - 16:1
Tree trimmings- 16:1
Vegetable produce- 19:1
Food scraps/ Vegetable waste- 12:1
Weeds- 20:1
3) Volume (litres)
3) Carbon content
3) Nitrogen content
4) Nitrogen input
Please Select
Chicken manure- 6:1
Coffee grounds- 20:1
Cow manure- 15:1
Grass clippings (fresh)- 17:1
Hay- legume- 16:1
Horse manure- 30:1
Seaweed- 17:1
Sheep manure - 16:1
Tree trimmings- 16:1
Vegetable produce- 19:1
Food scraps/ Vegetable waste- 12:1
Weeds- 20:1
4) Volume (litres)
4) Carbon content
4) Nitrogen content
5) Nitrogen input
Please Select
Chicken manure- 6:1
Coffee grounds- 20:1
Cow manure- 15:1
Grass clippings (fresh)- 17:1
Hay- legume- 16:1
Horse manure- 30:1
Seaweed- 17:1
Sheep manure - 16:1
Tree trimmings- 16:1
Vegetable produce- 19:1
Food scraps/ Vegetable waste- 12:1
Weeds- 20:1
5) Volume (litres)
5) Carbon content
5) Nitrogen content
6) Nitrogen input
Please Select
Chicken manure- 6:1
Coffee grounds- 20:1
Cow manure- 15:1
Grass clippings (fresh)- 17:1
Hay- legume- 16:1
Horse manure- 30:1
Seaweed- 17:1
Sheep manure - 16:1
Tree trimmings- 16:1
Vegetable produce- 19:1
Food scraps/ Vegetable waste- 12:1
Weeds- 20:1
6) Volume (litres)
6) Carbon content
6) Nitrogen content
7) Nitrogen input
Please Select
Chicken manure- 6:1
Coffee grounds- 20:1
Cow manure- 15:1
Grass clippings (fresh)- 17:1
Hay- legume- 16:1
Horse manure- 30:1
Seaweed- 17:1
Sheep manure - 16:1
Tree trimmings- 16:1
Vegetable produce- 19:1
Food scraps/ Vegetable waste- 12:1
Weeds- 20:1
7) Volume (litres)
7) Carbon content
7) Nitrogen content
8) Nitrogen input
Please Select
Chicken manure- 6:1
Coffee grounds- 20:1
Cow manure- 15:1
Grass clippings (fresh)- 17:1
Hay- legume- 16:1
Horse manure- 30:1
Seaweed- 17:1
Sheep manure - 16:1
Tree trimmings- 16:1
Vegetable produce- 19:1
Food scraps/ Vegetable waste- 12:1
Weeds- 20:1
8) Volume (litres)
8) Carbon content
8) Nitrogen content
9) Nitrogen input
Please Select
Chicken manure- 6:1
Coffee grounds- 20:1
Cow manure- 15:1
Grass clippings (fresh)- 17:1
Hay- legume- 16:1
Horse manure- 30:1
Seaweed- 17:1
Sheep manure - 16:1
Tree trimmings- 16:1
Vegetable produce- 19:1
Food scraps/ Vegetable waste- 12:1
Weeds- 20:1
9) Volume (litres)
9) Carbon content
9) Nitrogen content
10) Nitrogen input
Please Select
Chicken manure- 6:1
Coffee grounds- 20:1
Cow manure- 15:1
Grass clippings (fresh)- 17:1
Hay- legume- 16:1
Horse manure- 30:1
Seaweed- 17:1
Sheep manure - 16:1
Tree trimmings- 16:1
Vegetable produce- 19:1
Food scraps/ Vegetable waste- 12:1
Weeds- 20:1
10) Volume (litres)
10) Carbon content
10) Nitrogen content
Total nitrogen volume (litres)
N) Final C:N ratio
N) Total carbon content
N) Total nitrogen content
Total compost volume (litres)
Final C:N ratio
Summary and submit compost mix
Total compost volume (litres)
Final C:N ratio
C+N) Total carbon content (parts)
C+N) Total nitrogen content (parts)
Submit
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