| |
| JFSQ |
| JOINT FOREST SECTOR QUESTIONNAIRE |
| Conversion Factors |
| NOTE THESE ARE ONLY GENERAL FACTORS. IT WOULD BE PREFERABLE TO USE SPECIES- OR COUNTRY-SPECIFIC FACTORS |
| Multiply the quantity expressed in units on the right side of "per" with the factor to get the value expressed in units on left side of "per". |
| Items in BOLD RED text were added to the JFSQ in February 2023 |
Product Code | Product | JFSQ Quantity Unit | Results from UNECE/FAO/ITTO 2020 publication "Forest Product Conversion Factors" | | | | | | | UNECE/FAO Engineered Wood Products Questionnaire (last revised 2020) | | Results from UNECE/FAO 2009 Conversion Factors Questionnaire (median) | | | FAO and UNECE Statistical Publications (Pre-2009) |
| | | volume to weight | | | volume/weight of finished product to volume of roundwood | | | Notes to Results | volume to weight | Notes to Results | volume to weight | volume/weight of finished product to volume of roundwood | Notes to Results | volume to weight | volume to area | volume/weight of finished product to volume of roundwood |
| | | m3 per MT | m3 per MT | m3 per MT | Roundwood
equivalent | Roundwood
equivalent | Roundwood
equivalent | | m3 per MT | | m3 per MT | Roundwood
equivalent | | m3 per MT | m3 per m2 | Roundwood |
| | | | | | | | | | | | | | | | | equivalent |
| | | Europe | NA** | EECCA** | Europe | NA** | EECCA** |
1 | ROUNDWOOD (WOOD IN THE ROUGH) | 1000 m3 ub |
1.1 | WOOD FUEL, INCLUDING WOOD FOR CHARCOAL | 1000 m3 ub | | | | | | | | | | | | | 1.38 |
1.1.C | Coniferous | 1000 m3 ub | 1.64 | | | | | | typical shipping weight | | | Green = 1.12 | | Based on 891 kg/m3 green, basic density of .41, and 20% moisture seasoned | 1.60 |
| | 1000 m3 ub | | | | | | | | | | Seasoned = 1.82 | | Based on 407 kg/m3 dry, assuming 20% moisture |
1.1.NC | Non-Coniferous | 1000 m3 ub | 1.11 | | | | | | typical shipping weight | | | Green=1.05 | | Based on 1137 kg/m3 green, specific gravity of .55, and 20% moisture seasoned | 1.33 |
| | 1000 m3 ub | | | | | | | | | | Seasoned=1.43 |
1.2 | INDUSTRIAL ROUNDWOOD | 1000 m3 ub |
1.2.C | Coniferous | 1000 m3 ub | 1.11 | 1.08 | 1.27 | | | | Averaged pulp and log | | | 1.10 | | Based on 50/50 ratio of share of logs/pulpwood in industrial roundwood |
1.2.C.Fir | Fir (and Spruce) | 1000 m3 ub | | | | | | | | | | 1.21 | | Austrian Energy Agency, 2009. weighted by share of standing inventory of European speices (57% spruce, 10% silver fir and remaining species) |
1.2.C.Pine | Pine | 1000 m3 ub | | | | | | | | | | 1.08 | | Austrian Energy Agency, 2009, weighted 25% Scots Pine, 2% maritime pine, 2% black pine and remaining species |
1.2.NC | Non-Coniferous | 1000 m3 ub | 0.98 | 1.02 | 1.15 | | | | | | | 0.91 | | Based on 50/50 ratio of share of logs/pulpwood in industrial roundwood |
1.2.NC.T | of which:Tropical | 1000 m3 ub | | | | | | | | | | AFRICA=1.31,
ASIA=0.956,
LA. AM= 0.847,
World=1.12 | | Source: Fonseca "Measurement of Roundwood" 2005, ITTO Annual Review 2007, table 3-2-a
Species weight averaged using m3/tonne from Fonseca 2005 and volume exported by species from each region as shown in ITTO 2007 (assumes that bark is removed) | 1.37 |
1.2.1 | SAWLOGS AND VENEER LOGS | 1000 m3 ub | 1.04 | 0.96 | 1.12 | | | | Averaged C & NC | | | 1.05 | | Based on 950 kg/m3 green. Bark is included in weight but not in volume. |
1.2.1.C | Coniferous | 1000 m3 ub | 1.10 | 1.00 | 1.19 | | | | | | | 1.07 | | Based on 935 kg/m3 green. Bark is included in weight but not in volume. | 1.43 |
1.2.1.NC | Non-Coniferous | 1000 m3 ub | 0.97 | 0.92 | 1.04 | | | | | | | 0.91 | | Based on 1093 kg/m3 green. Bark is included in weight but not in volume. | 1.25 |
1.2.NC.Beech | Beech | 1000 m3 ub | | | | | | | | | | 0.92 | | Austrian Energy Agency, 2009 |
1.2.NC.Birch | Birch | 1000 m3 ub | | | | | | | | | | 0.88 | | Austrian Energy Agency, 2009 |
1.2.NC.Eucalyptus | Eucalyptus | 1000 m3 ub | | | | | | | | | | 0.77 | | ATIBT, 1982 |
1.2.NC.Oak | Oak | 1000 m3 ub | | | | | | | | | | 0.88 | | Austrian Energy Agency, 2009 |
1.2.NC.Poplar | Poplar | 1000 m3 ub | | | | | | | | | | 1.06 | | Austrian Energy Agency, 2009 |
1.2.2 | PULPWOOD (ROUND & SPLIT) | 1000 m3 ub | 1.05 | 1.14 | 1.30 | | | | Averaged C & NC | | | 1.08 | | Based on 930 kg/m3 green. Bark is included in weight but not in volume. | 1.48 |
1.2.2.C | Coniferous | 1000 m3 ub | 1.11 | 1.16 | 1.35 | | | | | | | 1.12 | | Based on 891 kg/m3 green. Bark is included in weight but not in volume. | 1.54 |
1.2.2.NC | Non-Coniferous | 1000 m3 ub | 0.98 | 1.11 | 1.25 | | | | | | | 0.91 | | Based on 1095 kg/m3 green. Bark is included in weight but not in volume. | 1.33 |
1.2.3 | OTHER INDUSTRIAL ROUNDWOOD | 1000 m3 ub | | | | | | | | | | 1.07 | | | 1.33 |
1.2.3.C | Coniferous | 1000 m3 ub | 1.11 | 1.16 | 1.35 | | | | used pulpwood data | | | 1.12 | | same as 1.2.2.C | 1.43 |
1.2.3.NC | Non-Coniferous | 1000 m3 ub | 0.98 | 1.11 | 1.25 | | | | | | | 0.91 | | same as 1.2.2.NC | 1.25 |
2 | WOOD CHARCOAL | 1000 MT | | | | 6 m3rw/tonne | | | | | | 5.35 | | Does not include the use of any of the wood fiber to generate the heat to make (add about 30% if inputted wood fiber used to provide heat) | 6.00 |
3 | WOOD CHIPS, PARTICLES AND RESIDUES | 1000 m3 |
3.1 | WOOD CHIPS AND PARTICLES | 1000 m3 | 1.205 | 1.07 | | 1.21 | 1.08 | | m3 /MT = green swe per odmt / avg delivered tonne/odmt, rwe= +1% | | | softwood=1.19 | 1.205 | Based on swe/odmt of 2.41 and avg delivered mt / odmt of 2.0 in solid m3 | 1.60 |
| | 1000 m3 | | | | | | | | | | hardwood = 1.05 | 1.123 | Based on swe/odmt of 2.01 and avg delivered mt / odmt of 1.79 in solid m3 |
| | 1000 m3 | | | | | | | Woodchip, Green swe to oven-dry tonne m3/odmt | | | mix = 1.15 |
3.2 | WOOD RESIDUES | 1000 m3 | 1.205 | 1.07 | | 1.21 | 1.08 | | Based on wood chips | | | Green=1.15 | | Based on wood chips | 1.50 |
| | 1000 m3 | 2.12 | | | 2.07 | | | | | | Seasoned = 2.12 | 2.07 | Assumption for seasoned is based on average basic density of .42 from questionnaire and assumes 15% moisture content |
3.2.1 | of which: SAWDUST | 1000 m3 | 1.205 | 1.07 | | 1.21 | 1.08 | | Based on wood chips |
4 | RECOVERED POST-CONSUMER WOOD | 1000 mt | | | | | | | | | | | | Delivered MT (12-20% atmospheric moisture). Convert to dry weight for energy purposes (multiply by 0.88 - 0.80) |
5 | WOOD PELLETS AND OTHER AGGLOMERATES | 1000 MT |
5.1 | WOOD PELLETS | 1000 MT | 1.54 | 1.45 | 1.54 | 1.51 | 1.44 | nodata | m3/ton - bulk density, loose volume, 5-10% mcw- Equivalent - solid wood imput to bulk m3 pellets | | | 1.51 | 1.44 | Bulk (loose) volume, 5-10% moisture |
5.2 | OTHER AGGLOMERATES | 1000 MT | 1.12 | nodata | nodata | 2.32 | nodata | nodata | m3/ton - Pressed logs and briquettes, bulk density, loose volume. Equivalent - m3rw/odmt | | | 1.31 | 2.29 | roundwood equivalent is m3rw/odmt, volume to weight is bulk (loose volume) |
6 | SAWNWOOD | 1000 m3 | | | | | | | | | | | | | | | 1.6 / 1.82* |
6.C | Coniferous | 1000 m3 | 1.202 | | | 1.69 | 1.62 | 1.85 | m3/ton - Average Sawnwood shipping weight. Equivalent - Sawnwood green rough | | | Green=1.202 | RoughGreen=1.67 | Green sawnwood based on basic density of .94, less bark (11%) | 1.82 |
| | 1000 m3 | 1.82 | 1.72 | Nodata | 2 | 1.69 | 2.05 | Sawnwood dry rough | | | Dry = 1.99 | RoughDry=1.99 | Dry sawnwood weight based on basic density of .42, 4% shrinkage and 15% moisture content |
| | 1000 m3 | | | | 2.26 | 2.08 | nodata | Sawnwood dry planed | | | | PlanedDry=2.13 |
6.C.Fir | Fir and Spruce | 1000 m3 | | | | | | | | | | 2.16 | | Austrian Energy Agency, 2009. Dried weight (15% moisture content dry weight). Weighted ratio of standing inventory. |
6.C.Pine | Pine | 1000 m3 | | | | | | | | | | 1.72 | | Austrian Energy Agency, 2009. Dried weight (15% moisture content dry weight). Weighted ratio of standing inventory. |
6.NC | Non-Coniferous | 1000 m3 | 1.04 | | | 1.89 | 1.79 | nodata | Sawnwood green rough | | | Green=1.04 | RoughGreen=1.86 | Green sawnwood based on basic density of 1.09, less bark (12%) | 1.43 |
| | 1000 m3 | 1.43 | nodata | nodata | 2.01 | 1.92 | nodata | m3/ton - Average Sawnwood shipping weight. Equivalent - Sawnwood green rough | | | Seasoned=1.50 | RoughDry=2.01 | Dry sawnwood weight based on basic density of .55, 5% shrinkage and 15% moisture content |
| | 1000 m3 | | | | 3.25 | 3.38 | nodata | Sawnwood dry planed | | | | PlanedDry=2.81 |
6.NC.Ash | Ash | 1000 m3 | | | | | | | | | | 1.47 | | Wood Database (wood-database.com). Air-dry. |
6.NC.Beech | Beech | 1000 m3 | | | | | | | | | | 1.42 | | Austrian Energy Agency, 2009. Dried weight (15% moisture content dry weight). |
6.NC.Birch | Birch | 1000 m3 | | | | | | | | | | 1.47 | | Austrian Energy Agency, 2009. Dried weight (15% moisture content dry weight). |
6.NC.Cherry | Cherry | 1000 m3 | | | | | | | | | | 1.62 | | Giordano, 1976, Tecnologia del legno. Air-dry. Prunus avium. |
6.NC.Maple | Maple | 1000 m3 | | | | | | | | | | 1.35 | | Giordano, 1976, Tecnologia del legno. Air-dry |
6.NC.Oak | Oak | 1000 m3 | | | | | | | | | | 1.38 | | Austrian Energy Agency, 2009. Dried weight (15% moisture content dry weight). |
6.NC.Poplar | Poplar | 1000 m3 | | | | | | | | | | 2.29 | | Austrian Energy Agency, 2009. Dried weight (15% moisture content dry weight). |
6.NC.T | of which:Tropical | 1000 m3 | | | | | | | | | | 1.38 | | Based on FP Conversion Factors (2019), Asia (720 kg / m3) |
7 | VENEER SHEETS | 1000 m3 | | | | | | | | | | | | | 1.33 | 0.0025 | 1.9* |
7.C | Coniferous | 1000 m3 | 1.05 | | | 1.95 | 1.5 | | Green veneer based on the ratio from the old conversion factors | | | Green=1.20 | 1.5*** | Green veneer based on basic density of .94, less bark (11%) | | 0.003 |
| | 1000 m3 | 1.8 | nodata | nodata | 2.08 | 1.6 | nodata | m3/ton - Average panel shipping weight; Roundwood equivalent - m3rw = cubic metre roundwood, m3p = cubic metre product | | | Seasoned=2.06 | 1.6*** | Dry veneer weight based on basic density of .42, 9% shrinkage and 5% moisture content |
7.NC | Non-Coniferous | 1000 m3 | 1.15 | nodata | nodata | 2.11 | 1.89 | | Green veneer based on the ratio from the old conversion factors | | | Green=1.04 | 1.5*** | Green veneer based on basic density of 1.09, less bark (11%) | | 0.001 |
| | 1000 m3 | 1.7 | nodata | nodata | 2.25 | 2 | nodata | m3/ton - Average panel shipping weight; Roundwood equivalent - m3rw = cubic metre roundwood, m3p = cubic metre product | | | Seasoned=1.53 | 1.6*** | Dry veneer weight based on basic density of .55, 11.5% shrinkage and 5% moisture content |
7.NC.T | of which:Tropical | 1000 m3 |
8 | WOOD-BASED PANELS | 1000 m3 | | | | | | | | | | | | | | | 1.6 |
8.1 | PLYWOOD | 1000 m3 | | | | | | | | | | | | | 1.54 | 0.105 | 2.3* |
8,1.C | Coniferous | 1000 m3 | 1.67 | Nodata | Nodata | 2.16 | 1.92 | nodata | | | | 1.69 | 2.12 | dried, sanded, peeled | | 0.0165*** |
8.1.NC | Non-Coniferous | 1000 m3 | 1.54 | Nodata | Nodata | 2.54 | 2.14 | nodata | | | | 1.54 | 1.92 | dried, sanded, sliced | | 0.0215*** |
8.1.NC.T | of which:Tropical | 1000 m3 |
8.1.1 | of which: LAMINATED VENEER LUMBER | 1000 m3 | | | | | | | | 1.69 | Same as coniferous plywood |
8.1.1.C | Coniferous | 1000 m3 | | | | | | | | 1.69 | Same as coniferous plywood |
8.1.1.NC | Non-Coniferous | 1000 m3 | | | | | | | | no data |
8.1.1.NC.T | of which:Tropical | 1000 m3 | | | | | | | | no data |
8.2 | PARTICLE BOARD (including OSB) | 1000 m3 | | | | | | | | | | | | | 1.54 |
8.2x | PARTICLE BOARD (excluding OSB) | 1000 m3 | 1.54 | Nodata | Nodata | 1.51 | 1.54 | nodata | m3/ton - Based on Product based density; Roundwood equivalent - m3rw = cubic metre roundwood, m3p = cubic metre product. | | | 1.53 | 1.50 | | | 0.018*** |
8.2.1 | of which: OSB | 1000 m3 | 1.64 | Nodata | Nodata | 1.72 | 1.63 | nodata | m3/ton - Based on Product based density; Roundwood equivalent - m3rw = cubic metre roundwood, m3p = cubic metre product. | | | 1.67 | 1.63 | | | 0.018*** |
8.3 | FIBREBOARD | 1000 m3 | | | | nodata | nodata | nodata | m3/ton - Based on Product based density; Roundwood equivalent - m3rw = cubic metre roundwood, m3p = cubic metre product. |
8.3.1 | HARDBOARD | 1000 m3 | 1.06 | Nodata | Nodata | 2.2 | 1.77 | nodata | m3/ton - Based on Product based density; Roundwood equivalent - m3rw = cubic metre roundwood, m3p = cubic metre product. | | | 1.06 | 1.93 | solid wood per m3 of product | 1.05 | 0.005
Alex McCusker: Alex McCusker:
0.003 per Conversion Factors Study |
8.3.2 | MEDIUM/HIGH DENSITY FIBREBOARD (MDF/HDF) | 1000 m3 | 1.35 | Nodata | Nodata | 1.80 | 1.53 | nodata | m3/ton - Based on Product based density; Roundwood equivalent - m3rw = cubic metre roundwood, m3p = cubic metre product. | | | 1.37 | 1.70 | solid wood per m3 of product | 2.00 | 0.016 |
8.3.3 | OTHER FIBREBOARD | 1000 m3 | 3.85 | Nodata | Nodata | 0.68 | 0.71 | nodata | m3/ton - Based on Product based density; Roundwood equivalent - m3rw = cubic metre roundwood, m3p = cubic metre product. | | | 3.44 | 0.71 | solid wood per m3 of product, mostly insulating board | 4.00 | 0.025 |
9 | WOOD PULP | 1000 MT | | | | 3.7 | nodata | 3.76 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 3.86 | | | | 3.37 |
9.1 | MECHANICAL AND SEMI-CHEMICAL | 1000 MT | | | | 2.59 | 2.45 | 2.94 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 2.60 | air-dried metric ton (mechanical 2.50, semi-chemical 2.70) |
9..2 | CHEMICAL | 1000 MT | | | | 4.80 | 4.29 | 4.10 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 4.90 |
9.2.1 | SULPHATE | 1000 MT | | | | 4.50 | nodata | 4.60 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 4.57 | air-dried metric ton (unbleached 4.63, bleached 4.50) |
9.2.1.1 | of which: bleached | 1000 MT | | | | 4.50 | nodata | 4.90 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 4.50 | air-dried metric ton |
9.2.2 | SULPHITE | 1000 MT | | | | 4.73 | nodata | 4.15 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 4.83 | air-dried metric ton (unbleached 4.64 and bleached 5.01) |
9.3 | DISSOLVING GRADES | 1000 MT | | | | 4.46 | nodata | nodata | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 5.65 | air-dried metric ton |
10 | OTHER PULP | 1000 MT | | | | nodata | nodata | nodata | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) |
10.1 | PULP FROM FIBRES OTHER THAN WOOD | 1000 MT | | | | nodata | nodata | nodata | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) |
10.2 | RECOVERED FIBRE PULP | 1000 MT | | | | nodata | nodata | nodata | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) |
11 | RECOVERED PAPER | 1000 MT | | | | nodata | nodata | nodata | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 1.28 MT in per MT out |
12 | PAPER AND PAPERBOARD | 1000 MT | | | | 3.85 | nodata | 4.15 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 3.6 | | | | 3.37 |
12.1 | GRAPHIC PAPERS | 1000 MT | | | | nodata | nodata | nodata |
12.1.1 | NEWSPRINT | 1000 MT | | | | 2.80 | 2.50 | 3.15 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 2.80 | air-dried metric ton |
12.1.2 | UNCOATED MECHANICAL | 1000 MT | | | | 3.50 | nodata | 4.00 | | | | | 3.50 | air-dried metric ton |
12.1.3 | UNCOATED WOODFREE | 1000 MT | | | | nodata | nodata | nodata |
12.1.4 | COATED PAPERS | 1000 MT | | | | 3.50 | nodata | 4.00 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 3.95 | air-dried metric ton |
12.2 | SANITARY AND HOUSEHOLD PAPERS | 1000 MT | | | | 4.60 | nodata | 4.20 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 4.90 | air-dried metric ton |
12.3 | PACKAGING MATERIALS | 1000 MT | | | | 3.25 | nodata | 4.30 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 3.25 | air-dried metric ton |
12.3.1 | CASE MATERIALS | 1000 MT | | | | 4.20 | nodata | 4.00 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 4.20 | air-dried metric ton |
12.3.2 | CARTONBOARD | 1000 MT | | | | 4.00 | nodata | 4.30 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 4.00 | air-dried metric ton |
12.3.3 | WRAPPING PAPERS | 1000 MT | | | | 4.10 | nodata | 4.40 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 4.10 | air-dried metric ton |
12.3.4 | OTHER PAPERS MAINLY FOR PACKAGING | 1000 MT | | | | 4.00 | nodata | 3.30 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 4.00 | air-dried metric ton |
12.4 | OTHER PAPER AND PAPERBOARD N.E.S | 1000 MT | | | | 3.48 | nodata | 3.30 | m3sw/MT, where m3sw = cubic metre solid wood, and MT = tonne (in this case assumed air-dry – 10% moisture, wet basis) | | | | 3.48 | air-dried metric ton |
15 | GLULAM AND CROSS-LAMINATED TIMBER | 1000 m3 |
15.1 | GLULAM | 1000 m3 | | | | | | | | 1.69 | same as coniferous plywood |
15.2 | CROSS-LAMINATED TIMBER | 1000 m3 | | | | | | | | 2.00 |
16 | I-BEAMS | 1000 MT | | | | | | | | 1.68 | 222 linear meters per MT |
For inverse relationships divide 1 by the factor given, e.g. to convert m3 of wood charcoal to mt divide 1 by m3/mt factor of 6 = 0.167 |
Notes: | | | | | | Forest Measures |
MT = metric tonnes (1000 kg) | | | | | | Unit | | | m3/unit |
m3 = cubic meters (solid volume) | | | | | | 1000 board feet (sawlogs) | | | 4.53**** | **** = obsolete - more recent figures would be: |
m2 = square meters | | | | | | 1000 board feet (sawnwood - nominal) | | | 2.36 | | for Oregon, Washington State, Alaska (west of Cascades), South East United States (Doyle region): 6.3 |
(s) = solid volume | | | | | | 1000 board feet (sawnwood - actual) | | | 1.69 | | Inland Western North America, Great Lakes (North America), Eastern Canada: 5.7 |
| | | | | | 1000 square feet (1/8 inch thickness) | | | 0.295 | | Northeast United States Int 1/4": 5 |
Unit Conversion | | | | | | cord | | | 3.625 |
1 inch = 25.4 millimetres | | | | | | cord (pulpwood) | | | 2.55 |
1 square foot = 0.0929 square metre | | | | | | cord (wood fuel) | | | 2.12 |
1 pound = 0.454 kilograms | | | | | | cubic foot | | | 0.02832 |
1 short ton (2000 pounds) = 0.9072 metric ton | | | | | | cubic foot (stacked) | | | 0.01841 |
1 long ton (2240 pounds) = 1.016 metric ton | | | | | | cunit | | | 2.83 |
Bold = FAO published figure | | | | | | fathom | | | 6.1164 |
| | | | | | hoppus cubic foot | | | 0.0222 |
* = ITTO | | | | | | hoppus super(ficial) foot | | | 0.00185 |
| | | | | | hoppus ton (50 hoppus cubic feet) | | | 1.11 |
** NA = North America; EECCA = Eastern Europe, Caucasus and Central Asia | | | | | | Petrograd Standard | | | 4.672 |
| | | | | | stere | | | 1 |
*** = Conversion Factor Study, US figures, rotary for conifer and sliced for non-conifer | | | | | | stere (pulpwood) | | | 0.72 |
| | | | | | stere (wood fuel) | | | 0.65 |
Fonseca "Measurement of Roundwood" 2005. Estimated by Matt Fonseca based on regional knowledge of the scaling methods and timber types |
prepared February 2004 |
updated 2007 with RWE factors |
updated 2009 with provisional results of forest products conversion factors study |
updated 2011 with results of forest products conversion factors study (DP49) |
updated 2023 with results of 2019 UNECE/FAO/ITTO study - https://www.fao.org/documents/card/en/c/ca7952en |