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Calculator: Conventional (gravimetric, imperial, US) unit to SI unit conversions: Chemistry and endocrine tests

Calculator: Conventional (gravimetric, imperial, US) unit to SI unit conversions: Chemistry and endocrine tests

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  • SI units: Système Internationale d'Unités, or International System of Units.
  • US units: Gravimetric, imperial, or traditional English units.
  • To make chemistry unit conversions, first choose the chemical in the top pull-down selector.
  • Next, select the starting unit and enter a value in the FROM input.
  • Select a TO unit from the lower right selector and the converted value will appear immediately in the TO box.
  • The conversion factor for any selected analyte can be found by entering 1.0 in the "FROM" input box for that analyte and viewing the conversion factor in the "TO" output box. Conversion is calculated by multiplying a value in the FROM units by the conversion factor.
  • In this calculator, mcg is the abbreviation for micrograms.



Conversion factors
1, 25-Dihydroxyvitamin D (calciferol 1 25) pg/mlX2.6=1, 25-Dihydroxyvitamin D (calciferol 1 25) pmol/L
11-Deoxycorticosterone (DOC) pg/mLX3.03=11-Deoxycorticosterone (DOC) pmol/L
11-Deoxycortisol (adult) ng/dLX0.02886=11-Deoxycortisol (adult) nmol/L
17-Hydroxyprogesterone (adult) ng/dLX0.03=17-Hydroxyprogesterone (adult) nmol/L
25-Hydroxyvitamin D (calciferol 25) ng/mLX2.496=25-Hydroxyvitamin D (calciferol 25) nmol/L
5'-Nucleotidase U/LX0.01667=5'-Nucleotidase mcKat/L
5-Hydroxyindoleacetic acid (5-HIAA, urine) mg/24 hoursX5.23=5-Hydroxyindoleacetic acid (5-HIAA, urine) mcmol/24 hours
Acetone mmol/LX1000=Acetone mcmol/L
Acetone mg/dLX172.18=Acetone mcmol/L
Acetone mg/LX17.218=Acetone mcmol/L
Adrenocorticotropic hormone (ACTH) pg/mLX0.2202=Adrenocorticotropic hormone (ACTH) pmol/L
Alanine amino-transferase (ALT SGPT) U/L at 37\xB0CX0.01667=Alanine amino-transferase (ALT SGPT) mcKat/L
Albumin g/dLX10=Albumin g/L
Aldolase U/LX0.01667=Aldolase mcKat/L
Aldosterone (24 hr) mcg/24 hoursX2.774=Aldosterone (24 hr) nmol/24 hours
Aldosterone ng/dLX27.7=Aldosterone pmol/L
Alkaline phosphatase U/LX0.01667=Alkaline phosphatase mcKat/L
Alpha-1 antitrypsin mg/dLX.01=Alpha-1 antitrypsin g/L
Alpha-fetoprotein (AFP) g/LX1000000=Alpha-fetoprotein (AFP) mcg/L
Alpha-fetoprotein (AFP) mg/LX1000=Alpha-fetoprotein (AFP) mcg/L
Alpha-fetoprotein (AFP) ng/LX.001=Alpha-fetoprotein (AFP) mcg/L
Alpha-fetoprotein (AFP) mcg/dLX10=Alpha-fetoprotein (AFP) mcg/L
Alpha-fetoprotein (AFP) mg/dLX10000=Alpha-fetoprotein (AFP) mcg/L
Alpha-fetoprotein (AFP) ng/dLX.01=Alpha-fetoprotein (AFP) mcg/L
Alpha-fetoprotein (AFP) ng/mLX1=Alpha-fetoprotein (AFP) mcg/L
Ammonia (N) mcg/dLX0.714=Ammonia (N) mcmol/L
Ammonia (NH3) mcmol/LX1=Ammonia (N) mcmol/L
Ammonia (NH3) mcg/dLX0.5872=Ammonia (N) mcmol/L
Amylase U/LX0.01667=Amylase mcKat/L
Androstenedione ng/dLX0.0349=Androstenedione nmol/L
Angiotensin converting enzyme (ACE) mcKat/LX1000=Angiotensin converting enzyme (ACE) nKat/L
Angiotensin converting enzyme (ACE) U/LX16.67=Angiotensin converting enzyme (ACE) nKat/L
Angiotensin I pg/mLX0.7713=Angiotensin I pmol/L
Angiotensin II pg/mLX0.956=Angiotensin II pmol/L
Antidiuretic hormone (ADH) pg/mLX0.922=Antidiuretic hormone (ADH) pmol/L
Apolipoprotein A1 mg/dLX0.01=Apolipoprotein A1 g/L
Apolipoprotein B mg/dLX0.01=Apolipoprotein B g/L
Aspartate amino-transferase (AST SGOT) U/L at 37\xB0CX0.01667=Aspartate amino-transferase (AST SGOT) mcKat/L
Bicarbonate mEq/LX1=Bicarbonate mmol/L
Bilirubin mg/dLX17.104=Bilirubin mcmol/L
BUN (blood urea nitrogen) mg/dLX0.357=BUN (blood urea nitrogen) mmol/L
C peptide ng/mLX0.33=C peptide nmol/L
Calcitonin pg/mLX.292=Calcitonin pmol/L
Calcium ionized mg/dLX0.25=Calcium ionized mmol/L
Calcium mg/dLX0.25=Calcium mmol/L
Carbon dioxide partial pressure pCO2 mmHgX0.133=Carbon dioxide partial pressure pCO2 kPa
Carbon dioxide total mEq/LX1=Carbon dioxide total mmol/L
Carcinoembryonic antigen (CEA) mg/LX1000=Carcinoembryonic antigen (CEA) mcg/L
Carcinoembryonic antigen (CEA) mcg/mLX1000=Carcinoembryonic antigen (CEA) mcg/L
Carcinoembryonic antigen (CEA) ng/mLX1=Carcinoembryonic antigen (CEA) mcg/L
Carotene mcg/dLX0.0186=Carotene mcmol/L
Catecholamines fractionated - epinephrine pg/mLX5.459=Catecholamines fractionated - epinephrine pmol/L
Catecholamines fractionated - norepinephrine pg/mLX5.911=Catecholamines fractionated - norepinephrine pmol/L
Ceruloplasmin mg/dLX10=Ceruloplasmin mg/L
Chloride mEq/LX1=Chloride mmol/L
Cholesterol mg/dLX0.02586=Cholesterol mmol/L
Chromium mcg/LX19.232=Chromium nmol/L
Cobalt mcg/LX16.968=Cobalt nmol/L
Copper mcg/dLX0.157=Copper mcmol/L
Coproporphyrins (urine) mcg/24 hoursX1.527=Coproporphyrins (urine) nmol/24 hours
Cortisol (urine) mcg/24 hoursX2.759=Cortisol (urine) nmol/24 hours
Cortisol mcg/dLX27.59=Cortisol nmol/L
Cortisol ng/mLX2.759=Cortisol nmol/L
Creatine kinase isoenzyme MB ng/mLX1=Creatine kinase isoenzyme MB mcg/L
Creatine kinase U/L at 37\xB0CX0.01667=Creatine kinase mcKat/L
Creatine mg/dLX76.3=Creatine mcmol/L
Creatinine mg/dLX88.4=Creatinine mcmol/L
Cyclic adenosine monophosphate (cAMP) nmol/dLX10=Cyclic adenosine monophosphate (cAMP) nmol/L
Dehydroepiandrosterone (DHEA) ng/mLX3.467=Dehydroepiandrosterone (DHEA) nmol/L
Dehydroepiandrosterone sulfate (DHEA-S) mcg/dLX0.0271=Dehydroepiandrosterone sulfate (DHEA-S) mcmol/L
Delta-aminolevulinic acid mg/dLX76.26=Delta-aminolevulinic acid mcmol/L
Deoxycorticosterone ng/dLX0.0303=Deoxycorticosterone nmol/L
Dopamine (plasma) pg/mLX6.528=Dopamine (plasma) pmol/L
Dopamine (urine) mcg/24 hoursX6.528=Dopamine (urine) nmol/24 hours
Epinephrine (plasma) pg/mLX5.459=Epinephrine (plasma) pmol/L
Epinephrine (urine) mcg/24 hoursX5.459=Epinephrine (urine) nmol/24 hours
Estradiol (E2) pg/mLX3.671=Estradiol (E2) pmol/L
Estriol (E3) ng/mLX3.467=Estriol (E3) nmol/L
Ethanol (ethyl alcohol) mg/dLX0.217=Ethanol (ethyl alcohol) mmol/L
Ethylene glycol mg/dLX0.1611=Ethylene glycol mmol/L
Ethylene glycol mg/LX0.01611=Ethylene glycol mmol/L
Ferritin ng/mLX2.247=Ferritin pmol/L
Fibrinogen mg/dLX0.0294=Fibrinogen mcmol/L
Folate ng/mLX2.266=Folate nmol/L
Galactose mg/dLX0.05551=Galactose mmol/L
Gamma glutamyl transferease (GGT) U/L at 37\xB0CX0.01667=Gamma glutamyl transferease (GGT) mcKat/L
Gastrin pg/mLX0.481=Gastrin pmol/L
Glucose mg/dLX0.05551=Glucose mmol/L
Glutathione mg/dLX0.0325=Glutathione mmol/L
Growth hormone ng/mLX1=Growth hormone mcg/L
Haptoglobin mg/dLX0.01=Haptoglobin g/L
HDL-cholesterol mg/dLX0.02586=HDL-cholesterol mmol/L
HgbA1c %X10.93=HgbA1c mmol/mol
Histamine mcg/LX8.997=Histamine nmol/L
Human chorionic gonadotropin (HCG) beta mU/mLX1=Human chorionic gonadotropin (HCG) beta IU/L
Insulin-like growth factor (somatomedin C) ng/mLX0.131=Insulin-like growth factor (somatomedin C) nmol/L
Insulin mcIU/mLX6.945=Insulin pmol/L
Iron binding capacity mcg/dLX0.179=Iron binding capacity mcmol/L
Iron saturation %X0.01=Iron saturation fraction
Iron mcg/dLX0.179=Iron mcmol/L
Isocitrate dehydrogenase (ICD) U/LX0.01667=Isocitrate dehydrogenase (ICD) mcKat/L
Lactate dehydrogenase (LD) U/L at 37\xB0CX0.01667=Lactate dehydrogenase (LD) mcKat/L at 37\xB0C
Lactate mg/dLX0.111=Lactate mmol/L
LDL-cholesterol mg/dLX0.02586=LDL-cholesterol mmol/L
Lead mcg/dLX0.0483=Lead mcmol/L
Leucine aminopeptidase (LAP) U/LX0.01667=Leucine aminopeptidase (LAP) mcKat/L
Lipase U/LX0.01667=Lipase mcKat/L
Lipoprotein(a) cholesterol mg/dLX0.02586=Lipoprotein(a) cholesterol mcmol/L
Luteinizing hormone (LH) mIU/mLX1=Luteinizing hormone (LH) IU/L
Magnesium mEq/LX0.5=Magnesium mmol/L
Magnesium mg/dLX0.411=Magnesium mmol/L
Malic dehydrogenase U/LX0.01667=Malic dehydrogenase mcKat/L
Metanephrines (total plasma) pg/mLX5.26=Metanephrines (total plasma) pmol/L
Metanephrines (total urine) mcg/24 hoursX5.26=Metanephrines (total urine) nmol/24 hours
Methanol (methyl alcohol) mcg/mLX0.0312=Methanol (methyl alcohol) mmol/L
Methanol (methyl alcohol) mg/LX0.0312=Methanol (methyl alcohol) mmol/L
Methemoglobin g/dLX155=Methemoglobin mcmol/L
Muramidase (lysozyme) mcg/mLX1=Muramidase (lysozyme) mg/L
Myoglobin (serum) mcg/LX0.05868=Myoglobin (serum) nmol/L
Norepinephrine (plasma) pg/mLX5.911=Norepinephrine (plasma) pmol/L
Norepinephrine (urine) mcg/24 hoursX5.911=Norepinephrine (urine) nmol/24 hours
Normetanephrine (plasma) pg/mLX5.46=Normetanephrine (plasma) pmol/L
Normetanephrine (urine) mcg/24 hoursX5.46=Normetanephrine (urine) nmol/24 hours
Osteocalcin ng/mLX1=Osteocalcin mcg/L
Oxygen partial pressure (pO2) mmHgX0.133=Oxygen partial pressure (pO2) kPa
Parathyroid hormone (PTH) pg/mLX1=Parathyroid hormone (PTH) ng/L
Parathyroid hormone-intact (intact-PTH) pg/mLX0.1061=Parathyroid hormone-intact (intact-PTH) pmol/L
Phenylalanine mg/dLX60.54=Phenylalanine mcmol/L
Phosphate (serum inorganic phosphorus) mg/dLX0.323=Phosphate (serum inorganic phosphorus) mmol/L
Phosphate (urine inorganic phosphorus) g/24 hoursX32.29=Phosphate (urine inorganic phosphorus) mmol/24 hours
Plasminogen (plasma) mg/dLX0.113=Plasminogen (plasma) mcmol/L
Porphobilinogen mg/dLX44.2=Porphobilinogen mcmol/L
Potassium mEq/LX1=Potassium mmol/L
Progesterone ng/mLX3.18=Progesterone nmol/L
Prolactin mcg/LX43.478=Prolactin pmol/L
Protein total g/dLX10=Protein total g/L
Protoporphyrin mcg/dLX0.0178=Protoporphyrin mcmol/L
Pyruvate mg/dLX113.6=Pyruvate mcmol/L
Renin (plasma renin activity PRA) ng/mL/hrX1=Renin (plasma renin activity PRA) mcg/L/hr
Renin (plasma renin concentration) pg/mLX0.02261=Renin (plasma renin concentration) pmol/L
Reverse T3 (rT3) ng/dLX0.0154=Reverse T3 (rT3) nmol/L
Serotonin ng/mLX0.0057=Serotonin mcmol/L
Sodium mEq/LX1=Sodium mmol/L
Somatomedin C (insulin-like growth factor) ng/mLX0.131=Somatomedin C (insulin-like growth factor) nmol/L
Somatostatin pg/mLX0.611=Somatostatin pmol/L
Testosterone (total) ng/dLX0.0347=Testosterone (total) nmol/L
Testosterone (unbound) pg/mLX3.47=Testosterone (unbound) pmol/L
Thyroglobulin ng/mLX1=Thyroglobulin mcg/L
Thyroid stimulating hormone (TSH) mcIU/mLX1=Thyroid stimulating hormone (TSH) mIU/L
Thyrotropin releasing hormone (TRH) pg/mLX2.759=Thyrotropin releasing hormone (TRH) pmol/L
Thyroxine (T4) total mcg/dLX12.87=Thyroxine (T4) total nmol/L
Thyroxine binding globulin (TBG) mcg/mLX17.094=Thyroxine binding globulin (TBG) nmol/L
Thyroxine free (free T4) ng/dLX12.871=Thyroxine free (free T4) pmol/L
Transferrin (TIBC) mg/dLX0.1299=Transferrin (TIBC) mcmol/L
Triglycerides mg/dLX0.0113=Triglycerides mmol/L
Triiodothyronine (T3) total (total T3) pmol/LX.001=Triiodothyronine (T3) total (total T3) nmol/L
Triiodothyronine (T3) total (total T3) ng/dLX0.0154=Triiodothyronine (T3) total (total T3) nmol/L
Triiodothyronine (T3) total (total T3) pg/dLX0.0000154=Triiodothyronine (T3) total (total T3) nmol/L
Triiodothyronine free (free T3) pmol/LX.001=Triiodothyronine free (free T3) nmol/L
Triiodothyronine free (free T3) ng/dLX0.0154=Triiodothyronine free (free T3) nmol/L
Triiodothyronine free (free T3) pg/dLX0.0000154=Triiodothyronine free (free T3) nmol/L
Troponin I (cardiac) ng/mLX1=Troponin I (cardiac) mcg/L
Urea nitrogen (BUN) mg/dLX0.357=Urea nitrogen (BUN) mmol/L
Uric acid mg/dLX59.5=Uric acid mcmol/L
Vanillylmandelic acid (VMA urine) mg/24 hoursX5.046=Vanillylmandelic acid (VMA urine) mcmol/24 hours
Vasoactive intestinal polypeptide (VIP) pg/mLX0.301=Vasoactive intestinal polypeptide (VIP) pmol/L
Vitamin A1 (retinol) mcg/dLX0.0349=Vitamin A1 (retinol) mcmol/L
Vitamin B1 (thiamine pyrophosphate) mcg/dLX23.51=Vitamin B1 (thiamine pyrophosphate) nmol/L
Vitamin B12 (cyanocobalamin) pg/mLX0.7373=Vitamin B12 (cyanocobalamin) pmol/L
Vitamin B12 unsaturated binding capacity pg/mLX0.7373=Vitamin B12 unsaturated binding capacity pmol/L
Vitamin B6 (pyridoxine as pyridoxal-5 phosphate) ng/mLX4.05=Vitamin B6 (pyridoxine as pyridoxal-5 phosphate) nmol/L
Vitamin C (ascorbic acid) mg/dLX56.78=Vitamin C (ascorbic acid) mcmol/L
Vitamin D (calciferol 1 25) pg/mLX2.6=Vitamin D (calciferol 1 25) pmol/L
Vitamin D (calciferol 25) ng/mLX2.496=Vitamin D (calciferol 25) nmol/L
Vitamin E (tocopherol) mcg/mLX2.32=Vitamin E (tocopherol) mcmol/L
Vitamin K ng/mLX2.22=Vitamin K nmol/L
Xylose (from absorption) mg/dLX0.06661=Xylose (from absorption) mmol/L
Zinc mcg/dLX0.153=Zinc mcmol/L
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