Agronomic Services

Crop Fertilization Based on North Carolina Soil Tests

Table 4.19  Conversion factors for English and metric units
acre-inches × 102.8 = m³ acres × 0.004 = km² acres × 0.405 = ha bushels (bu) × 1.24 = ft³ bushels (bu) × 4 = pecks bushels (bu) × 0.046 = yd³ bushels (bu) × 0.352 = hectoliters bushels (bu) × 35.24 = liters centigrams (cg) × 0.01 = grams centiliters (cl) × 0.01 = liters centimeters (cm) × 0.3937 = inches centimeters (cm) × 0.01 = meters centimeters (cm) × 10 = mm cubic centimeters (cm³) × 0.000035 = ft³ cubic centimeters (cm³) × 0.06 = in.³ cubic centimeters (cm³) × 0.000001 = m³ cubic centimeters (cm³) × 0.000001 = yd³ cubic centimeters (cm³) × 0.00026 = gallons cubic centimeters (cm³) × 0.001 = liters cubic centimeters (cm³) × 0.002 = pints cubic centimeters (cm³) × 0.001 = quarts decigrams (dg) × 0.1 = grams deciliters (dl) × 0.1 = liters decimeters (dm) × 0.1 = meters °C + 17.78 × 1.8 = °F °F –- 32 × 0.5556 = °C dekagrams (dag) × 10 = grams dekaliters (dal) × 10 = liters dekameters (dam) × 10 = meters fathoms × 6.0 = feet feet (ft) × 30.48 = cm feet (ft) × 12 = inches feet (ft) × 0.3048 = meters feet (ft) × 0.333 = yd cubic feet (ft³) × 28,316.85 = cm³ cubic feet (ft³) × 1,728 = in.³ cubic feet (ft³) × 0.028 = m³ cubic feet (ft³) × 0.037 = yd³ cubic feet (ft³) × 7.48 = gallons cubic feet (ft³) × 28.29 = liters cubic feet (ft³) × 0.28 = hectoliters cubic feet (ft³) × 57.72 = pints cubic feet (ft³) × 28.86 = quarts cubic feet (ft³) × 0.8 = bushels gallons (gal.) × 3,785 = cm³ gallons (gal.) × 0.1337 = ft³ gallons (gal.) × 231 = in.³ gallons (gal.) × 0.0038 = m³ gallons (gal.) × 0.005 = yd³ gallons (gal.) × 3.79 = liters gallons (gal.) × 8 = pints gallons (gal.) × 4 = quarts gallons (gal.) × 8.3453 = lbs of water grams (g) × 0.01 = kg grams (g) × 1,000 = mg grams (g) × 0.035 = oz grams (g) × 0.0022 = lbs grams (g) × 2.471 = acre hectograms (hg) × 100 = grams hectoliters (hl) × 100 = liters hectoliters (hl) × 3.532 = ft³ hectoliters (hl) × 2.838 = bushels hectometers (hm) × 100 = meters hundredweight (cwt) × 0.454 = quintals inches (in.) × 2.54 = cm inches (thickness) × feet (length) = board feet cubic inches (in.³) × 16.39 = cm³ cubic inches (in.³) × 0.0006 = ft³ cubic inches (in.³) × 0.00002 = m³ cubic inches (in.³) × 0.00002 = yd³ cubic inches (in.³) × 0.0043 = gallons cubic inches (in.³) × 0.0164 = liters cubic inches (in.³) × 0.0346 = pints cubic inches (in.³) × 0.0173 = quarts cubic inches (in.³) × 16.39 = cm³ kilograms (kg) × 2.205 = lbs kilograms (kg) × 0.001 = tons (short) kilograms (kg) × 1,000 = grams kiloliters (kl) × 1,000 = liters kilometers (km) × 100,000 = cm kilometers (km) × 3,281 = feet kilometers (km) × 1,000 = meters kilometers (km) × 0.62 = miles kilometers (km) × 1,094 = yd sq. kilometers (km²) × 247.1 = acre sq. kilometers (km²) × 0.386 = mi² liters (l) × 1,000 = cm³ liters (l) × 0.035 = ft³ liters (l) × 61.02 = in.³ liters (l) × 0.001 = m³ liters (l) × 0.0013 = yd³ liters (l) × 0.26 = gallons liters (l) × 2.12 = pints liters (l) × 1.06 = quarts liters (l) × 0.028 = bushels meters (m) × 100 = cm meters (m) × 3.28 = feet meters (m) × 39.37 = inches meters (m) × 0.001 = km meters (m) × 1,000 = mm meters (m) × 1.094 = yd cubic meters (m³) × 35.32 = ft³ cubic meters (m³) × 61,030.4 = in.³ cubic meters (m³) × 1.35 = yd³ cubic meters (m³) × 264.2 = gallons cubic meters (m³) × 1,000 = liters cubic meters (m³) × 2,113.6 = pints cubic meters (m³) × 1,056.8 = quarts cubic meters (m³) × 0.0097 = acre-inches miles × 160,934 = cm miles × 5,280 = feet miles × 1.609 = km miles × 1,760 = yd miles per hour (mph) × 44.70 = cm/sec miles per hour (mph) × 88 = feet/min miles per hour (mph) × 1.467 = feet/sec miles per hour (mph) × 1.609 = km/hr miles per hour (mph) × 0.8696 = knots miles per hour (mph) × 26.82 = meters/min milligrams (mg) × 0.001 = grams milliliters (ml) × 0.001 = liters millimeters (mm) × 0.1 = cm millimeters (mm) × 0.04 = inches ounces (oz) × 0.06 = lbs ounces (oz) × 28.35 = grams ounces, fluid (oz) × 2 = tablespoons ounces, fluid (oz) × 6 = teaspoons ounces, fluid (oz) × 1.805 = in.³ ounces, fluid (oz) × 0.03 = liters parts per million (ppm) × 8.345 = lbs/million gallons pecks × 0.25 = bushels pounds (lbs) × 16 = oz pounds (lbs) × 0.0005 = tons (short) pounds (lbs) × 453.59 = grams pounds (lbs) × 0.454 = kg pounds of water × 0.02 = ft³ pounds of water × 34.56 = in.³ pounds of water × 0.12 = gallons quarts (qt) × 47.75 = in.³ quarts (qt) × 0.95 = liters quintals × 2.205 = hundredweights tablespoons (tbsp) × 0.5 = oz tablespoons (tbsp) × 3 = teaspoons teaspoons (tsp) × 0.167 = oz teaspoons (tsp) × 0.33 = tablespoons tons (long) × 1,016 = kg tons (long) × 2,240 = lbs tons (long) × 1.12 = tons (short) tons (metric) × 1.102 = tons (short) tons (metric) × 1,000 = kg tons (metric) × 2,205 = lbs tons (short) × 2,000 = lbs tons (short) × 32,000 = oz tons (short) × 907.18 = kg tons (short) × 0.89 = tons (long) tons (short) × 0.91 = tons (metric) yards (yd) × 0.914 = meters cubic yards (yd³) × 764,555 = cm³ cubic yards (yd³) × 21.8 = bushels cubic yards (yd³) × 27 = ft³ cubic yards (yd³) × 46,656 = in³ cubic yards (yd³) × 0.76 = m³ cubic yards (yd³) × 202 = gallons cubic yards (yd³) × 764 = liters cubic yards (yd³) × 1,616 = pints cubic yards (yd³) × 808 = quarts
Fertilizer Conversion Factors
phosphorus (P) × 2.29 = phosphate (P2O5) potassium (K) × 1.20 = potash (K2O)
Units-per-Area Conversion Factors
bu/acre × 0.87 = hectoliters/ha bu/acre (corn) × 0.062 = tons (metric)/ha bu/acre (grain sorghum) × 0.056 = tons (metric)/ha bu/acre (soybeans) × 0.067 = tons (metric)/ha bu/acre (wheat) × 0.067 = tons (metric)/ha hectoliters/ha × 1.15 = bu/acre cwt/acre × 1.12 = quintals/ha kg/ha × 0.89 = lbs/acre lbs/acre × 1.12 = kg/ha mg/dm³ × 2.0 = kg/ha quintals/ha × 0.892 = cwt/acre tons (metric)/ha × 0.446 = tons (short)/ha tons (short)/acre × 2.24 = tons (metric)/ha
Hardy DH, Tucker MR, Stokes CE. 2013. Crop fertilization based on North Carolina soil tests. Raleigh (NC): North Carolina Department of Agriculture and Consumer Services, Agronomic Division. Circular No. 1.