HP 35s User Manual

 
 
hp calculators 
 
 
 
 
HP 35s  Unit Conversions 
 
 
 
 
 
Metric units and Imperial units 
 
Conversion keys 
 
Practice working problems involving conversions 
 
Performing conversions that are not built in 
 
Special considerations for temperature conversions 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   

 
hp calculators 
 
HP 35s  Unit Conversions 
 
hp calculators - 2 - HP 35s  Unit Conversions - Version 1.0 
Metric units and Imperial units 
 
Measurements of quantities such as length, mass or temperature use units. Metric units include centimeters and meters, 
grams and kilograms, or Celsius and Kelvin degrees. Imperial units include feet and yards, ounces and pounds, or 
Fahrenheit and Rankine degrees. The HP 35s provides eight functions for converting to and from Metric units. These 
conversions are...

 
hp calculators 
 
HP 35s  Unit Conversions 
 
hp calculators - 3 - HP 35s  Unit Conversions - Version 1.0 
 In algebraic mode, do the same. Pressing 3 completes the calculation, but this is not necessary 
unless the conversion is part of a longer calculation. 
 
 -123
 
 Figure 1  
Answer: 25.4 centimeters.  
 
Example 2: How many gallons is 25 liters? 
 
Solution: In RPN mode, type the number 25 and then press the left-shifted !key. 
 
 !$)0
 
 In algebraic mode, do the same. Again, pressing 3...

 
hp calculators 
 
HP 35s  Unit Conversions 
 
hp calculators - 4 - HP 35s  Unit Conversions - Version 1.0 
 Another way to do this is to take the square root of 16 cm², giving 4 cm, then convert this to inches, then 
take the square. Figure 4 shows the result and confirms that the method used above is correct.  
 4-51%3 
 
 Figure 4 
 
Answer: 103.2256 square centimeters.  
 
Example 4: Convert 5 yards to meters 
 
Solution: The conversion keys use inches and centimeters, so it is necessary to go from...

 
hp calculators 
 
HP 35s  Unit Conversions 
 
hp calculators - 5 - HP 35s  Unit Conversions - Version 1.0 
 In algebraic mode, the following keys are used instead; note that 3 is needed to complete the 
calculation.  
 ---)*181222971!:63

 Figure 6  
Answer: The density of water is close to 62.4 pounds per cubic foot. 
 
Special considerations for temperature conversions 
 
Special care must be taken with temperature conversions. The two commands + and ), convert 
temperatures but not temperature...

 
 
hp calculators 
 
 
 
 
HP 35s  Temperature Conversions 
 
 
 
 
Metric units and Imperial units 
 
Conversion keys 
 
Practice working problems involving  
temperature conversions 
 
Conversion of temperatures and  
conversion of temperature differences 
 
Other temperature scales 
 
Using equations and programs for  
complicated conversions 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   

 
hp calculators 
 
HP 35s  Temperature Conversions 
 
hp calculators - 2 - HP 35s  Temperature Conversions - Version 1.0 
Metric units and Imperial units 
 
Measurements of quantities such as length, mass or temperature use units. Metric units include centimeters and meters, 
grams and kilograms, or Celsius and Kelvin degrees. Imperial units include feet and yards, ounces and pounds, or 
Fahrenheit and Rankine degrees. The HP 35s provides ten functions for converting to and from Metric units. These...

 
hp calculators 
 
HP 35s  Temperature Conversions 
 
hp calculators - 3 - HP 35s  Temperature Conversions - Version 1.0 
 !1), 

 In Algebraic mode, do the same. Pressing 2 completes the calculation, but is not necessary unless 
the conversion comes at the end of a longer calculation. 
 
 ),!12 
 
 Figure 1 
 
Answer: 20 degrees Celsius is 68 degrees Fahrenheit.  
 
Example 2: What is –40 degrees Fahrenheit when measured in degrees Celsius? 
 
Solution: In RPN mode, type the number 40, change the sign,...

 
hp calculators 
 
HP 35s  Temperature Conversions 
 
hp calculators - 4 - HP 35s  Temperature Conversions - Version 1.0 
As opposed to a temperature measurement, a temperature difference of zero really is zero, and does not need the 
addition or subtraction of 32. Adding 5 Celsius degrees to 20°C is the same as adding 9 Fahrenheit degrees to 68°F and 
does not require addition or subtraction of 32. 
 
Note: To make clear the distinction between temperature measurement and temperature difference,...