Convert the Temperature

Convert the Temperature

What is this problem about?

The Convert the Temperature interview question is a basic mathematical problem. You are given a temperature in Celsius and must convert it into two other scales: Kelvin and Fahrenheit. The formulas are provided: Kelvin = Celsius + 273.15 and Fahrenheit = Celsius * 1.80 + 32.00. You return the results as an array or list.

Why is this asked in interviews?

While simple, companies like Microsoft and Meta use the Convert the Temperature coding problem as a sanity check or for very entry-level roles. It evaluates whether a candidate can follow basic specifications, handle floating-point numbers correctly, and return results in the requested format. It's often used to test familiarity with a new programming language's basic syntax.

Algorithmic pattern used

This is a simple Math interview pattern. There are no complex loops or data structures required. You simply apply the formulas and store the results.

• Step 1: k = celsius + 273.15
• Step 2: f = celsius * 1.8 + 32.0
• Step 3: Return [k, f]

Example explanation

Input: celsius = 36.50

1. Kelvin: 36.50 + 273.15 = 309.65
2. Fahrenheit: 36.50 * 1.8 + 32.0 = 65.7 + 32.0 = 97.7 Output: [309.65, 97.70]

Common mistakes candidates make

• Rounding Errors: Rounding the results prematurely. Usually, the problem requires high precision.
• Wrong Formula: Mixing up the Kelvin or Fahrenheit conversion factors.
• Return Type: Returning a string instead of an array of floats, or vice versa.

Interview preparation tip

Always double-check the precision requirements. If the output needs to be accurate to 5 decimal places, ensure you aren't using a data type that loses precision early on.