Hex Calculator

How do I use a hex calculator?

The same arithmetic, base 16 - handy for anyone reading memory addresses or register values all day. Enter the known values and inspect the result immediately. For example, Add hexadecimal 2A and 10 to get 3A, which equals decimal 58. Use the output to check your reasoning or shortlist a design, then verify the units, assumptions, and real-world limits that apply.

Try it

Hex A

Operation

Hex B

Result (hex)39

Result (decimal)57

Understand the result

What's going on

Memory addresses, color codes, register values - a lot of the numbers engineers work with day to day show up in hex, not decimal. Being able to do quick arithmetic directly in hex saves a constant back-and-forth conversion.

The formula

decimal(a) [op] decimal(b), converted back to hex

Show the derivation, mnemonic, and worked example

Build it up

Hex has sixteen digits - 0 through 9, then A through F standing in for 10 through 15. Add or subtract column by column exactly like decimal, except a column only carries once it passes 15, not 9. Everything else about long addition, subtraction, multiplication, and division carries straight over.

Worked example

2A (42) + F (15)

42 + 15 = 57

57 in hex = 39

Questions engineers ask

What should I enter in the Hex Calculator?

Use known values in the units shown beside each field. Keep every input within a realistic range and convert units before comparing the result with another source.

Can I use the Hex Calculator result directly?

Encoding and number conversion do not provide encryption, authentication, or protection for sensitive data

How should I verify the Hex Calculator result?

Repeat the worked example, check the units and assumptions, then compare the output with a second calculation, a trusted reference, or a measurement from the real system.

How do I use a hex calculator?

Understand the result