# Conversions for Med Calc (FIII, Unit II)

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### To convert F to C

Subtract 32, then divide by 1.8

### To convert C to F

Multiply by 1.8, then add 32

2.5

15

60

### One quart equals how many pints, cups, oz, mL, L?

2 pints, 4 cups, 32 oz, 1000 mL, 1 L

1 oz

### One pint equals how many cups, oz, mL?

2 cups, 16 oz, 500 mL

### 1 fluid ounce equals how many drams, mL, Tbs?

8 drams, 30 mL, 2 Tbs

60

### 1 mL equals how many minims, drops (gtt)?

15 minims, 15 drops (gtt)

### 1 tsp equals how many mL, drops (gtt), drams?

5 mL, 60 drops (gtt), 1 dram

### 1 Tbs equals how many mL, tsp, drams, oz?

15 mL, 3 tsp, 4 drams, 1/2 oz

### 1 cup equals how many mL, oz, Tbs?

240 mL, 8 fluid ounces, 16 Tbs

6 oz

### 1 gallon equals how many quarts, pints, liters?

4 quarts, 8 pints, 4 liters

2.2 lbs.

ss

16

1,000

1,000,000

1,000

1,000

1,000

100

10

### What is the formula for calculating a dosage?

(D / H) x Q where...
D = dosage desired (what prescriber has ordered)
H = dosage strength available (what's on HAND)
Q = the quantity or the unit of measure that contains the dosage that is available (i.e. tablets, capsules, milliliters)
Remember that all should be in same units (i.e. mg, mcg)

### Rounding rule for liquid med administration from a 3 mL syringe

NEVER round to a whole unit
If math calculation does not work out evenly to the tenths place, then carry division to the hundredths place (two decimal places) and round to the nearest tenth

### Rounding rule for liquid med administration from a 1 mL (tuberculin) syringe

The 1 mL (tuberculin syringe) is calibrated in 0.01 mL increments
If the math calculation does not work out evenly to the hundredths place, then the division is carried to the thousandths place and rounded to the nearest hundredths place

### Rounding rule for liquid med administration from a large syringe (5, 10, 12 mL)

Large syringes (5, 10, 12 mL) are calibrated in 0.2 mL increments. Dosages are also expressed to the nearest tenth
Dosages administered should be measured in milliliters, and the answers should be labeled accordingly

### How is insulin measured and administered?

Insulin is measured and administered in units

Example: