Tree CO₂

Type DBH, height and type. 35 cm, 12 m and hardwood give 475.5 kg CO₂. 50 cm, 18 m and hardwood give 1,455.6 kg CO₂. 25 cm, 8 m and softwood give 130.6 kg CO₂. Biomass, not an offset.

A cone. 35 cm, 12 m and hardwood give 475.5 kg CO₂. Not a credit.

Input data

Results

Enter data and click Calculate.

How it works

Tree CO₂ in this calculator is mass from DBH, height and type. 35 cm, 12 m and hardwood give 475.5 kg CO₂. 50 cm, 18 m and hardwood give 1,455.6 kg CO₂. 25 cm, 8 m and softwood give 130.6 kg CO₂. Biomass next to it is 270 kg, 827 kg and 74 kg. Examples take CO₂.

Radius is DBH/200. Volume = πr²h × 0.45. Hardwood uses 520 kg/m³, softwood 420. Carbon = biomass × 0.48. CO₂ = carbon × 44/12. One stem, not a hectare.

475.5 kg CO₂ is not a credit. 1,455.6 kg CO₂ does not know a species atlas. 130.6 kg CO₂ is the thinner softwood.

Household CO₂ next door sums the meter. Insulation CO₂ counts U. Here the stem stays: 35 cm and 12 m stay 475.5 kg CO₂.

Type 35, 12 and hardwood, then Calculate. A comma in 35.5 parses. A cone sketch, not LULUCF.

35 and 12 hardwood give 475.5 kg CO₂. 50 and 18 hardwood give 1,455.6 kg CO₂. 25 and 8 softwood give 130.6 kg CO₂. Another height at 35 changes 475.5.

Formula

r = DBH_cm/200. V = πr²h × 0.45. biomass = V × (520 hardwood or 420 softwood). CO₂ = biomass × 0.48 × 44/12.

How to use

  1. Type DBH 35 cm and height 12 m.
  2. Leave hardwood. Click Calculate. The result is 475.5 kg CO₂.
  3. 50 cm and 18 m give 1,455.6 kg CO₂.
  4. 25 cm, 8 m and softwood give 130.6 kg CO₂.
  5. A biomass cone, not a carbon credit.

35 cm / 12 m / hardwood = 475.5 kg CO₂

A cone. 35 cm, 12 m and hardwood give 475.5 kg CO₂. Not a credit.

Tree
DBH and height. 35 and 12 leave 475.5 kg CO₂. 50 and 18 give 1,455.6.
CO₂
Carbon × 44/12. 25 cm softwood leaves 130.6 kg CO₂. Biomass sits next to it.
hardwood
Density 520. 35 cm and 12 m stay 475.5 kg CO₂. Softwood at 25 and 8 gives 130.6.

Examples

Example 1

  • DBH 35 cm
  • height 12 m
  • hardwood

475.5 kg CO₂

How much Tree CO₂ at 35 cm and 12 m, hardwood? 475.5 kg CO₂. A cone, not a credit.

Example 2

  • DBH 50 cm
  • height 18 m
  • hardwood

1,455.6 kg CO₂

How much at 50 cm and 18 m? 1,455.6 kg CO₂.

Example 3

  • DBH 25 cm
  • height 8 m
  • softwood

130.6 kg CO₂

How much at 25 cm, 8 m and softwood? 130.6 kg CO₂.

Related calculators

Household CO₂

A home yearly footprint from power, gas, district heat, and PV.

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Insulation CO₂

How much heating CO₂ you cut when you improve a wall U-value.

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Common questions

How much Tree CO₂ at 35 cm and 12 m, hardwood?

475.5 kg CO₂. Cone 0.45 and density 520, not a credit.

How much at 50 cm and 18 m?

1,455.6 kg CO₂. A larger DBH and height.

How much at 25 cm, 8 m and softwood?

130.6 kg CO₂. Density 420 instead of 520.

Is 475.5 kg an offset?

No. One stem from three fields. A credit market sits outside this calculator.

Where is biomass?

On the second line. At 35 and 12 that is 270 kg. Examples take 475.5 kg CO₂.

How does hardwood differ from softwood?

520 versus 420 kg/m³. The same 25 and 8 on softwood leave 130.6 kg CO₂.

Does a comma in 35.5 work?

Yes. 35.5 cm and 12 m give a different result than 35.

Is this LULUCF?

No. One stem cone. A hectare and stand age do not enter.

What if height is blank?

The code lifts height to 0.1 m. A blank does not leave zero from h = 0.

Knowledge sources

The factors on the page are a sketch. Below are EPA emissions terms, not a national inventory.

Page updated in 2026.