CWC Ch. 7: Additional Conversions Useful in the Health Care Setting

Farenheit freezing point

32 degrees

Farenheit boiling point

212 degrees

Average body temps

36 C and 98 F

The differences between freezing and boiling

180: 100 = 180/100 = 9/5 (F to C)

Converting C to F

multiply by 1.8 and add 32

F = 1.8 (C) + 32

or F = 9/5 (C) + 32

Converting F to C

subtract 32 then divide by 1.8

C = F - 32/1.8

or C = (F - 32) ÷ 9/5

Length conversions

1 cm = 10 mm

1 in = 2.54

Converting mm to cm

divide by 10 or move decimal one place to left

Converting cm to mm

multiply by 10 or move decimal one place to right

Converting cm to in

divide by 2.5 (think smaller to larger)

Weight conversions

2.2 lb = 1 kg

16 oz = 1 lb

Converting pounds to kilograms

divide by 2.2

Converting pounds and ounces to kg

1. Convert the oz to nearest 10th of a pound and ADD THIS to the total pounds. 16 oz = 1 lb

2. Convert the total lb to kg and round to nearest tenth. 2.2 lb = 1 kg

Converting kg to lb

multiply by 2.2, round to nearest tenth

Converting pm time to military time

omit the colon and pm, add 1200 to the time

Converting military time to pm time

subtract 1200, insert a colon and add pm

Military time completion calculation

add the infusion time to the start time

ex. started at 0300, to be completed in 3 h 30 min

0300 + 330 = 0630

Traditional time completion calculation

add the infusion time to the start time, subtract 1200 for pm