Ergonomic Desk Height Calculator Formula

Understand the math behind the ergonomic desk height calculator. Each variable explained with a worked example.

Use the Ergonomic Desk Height Calculator

Formulas Used

Desk Height

desk_height = is_standing == 0 ? round(height_cm * 0.415) : round(height_cm * 0.63)

Desk Height

desk_height_in = (is_standing == 0 ? height_cm * 0.415 : height_cm * 0.63) / 2.54

Chair Seat Height

chair_height = round(height_cm * 0.25)

Top of Monitor from Desk

monitor_height = is_standing == 0 ? round(height_cm * 0.22) : round(height_cm * 0.13)

Variables

VariableDescriptionDefault
height_inchesYour Height(inches)70
is_standingDesk Type0
height_cmDerived value= height_inches * 2.54calculated

How It Works

Ergonomic Desk Setup

Proper desk height keeps your elbows at approximately 90 degrees with your forearms parallel to the floor.

Sitting Desk

  • Desk height = Body height x 0.415
  • Chair height = Body height x 0.25
  • Monitor = Top at or slightly below eye level

    • Standing Desk

  • Desk height = Body height x 0.63
  • Same elbow-at-90-degrees rule applies

    • Worked Example

    A 70-inch (177.8 cm) tall person at a sitting desk.

    height_inches = 70is_standing = 0
    1. 01Height = 177.8 cm
    2. 02Desk height = 177.8 x 0.415 = 73.8 cm (29.1 inches)
    3. 03Chair height = 177.8 x 0.25 = 44 cm
    4. 04Monitor rise = 177.8 x 0.22 = 39 cm above desk

    Frequently Asked Questions

    What is the standard desk height?

    Standard desk height is about 29-30 inches (74-76 cm), which works for people around 5'10". Adjustable desks are ideal for other heights.

    How high should my monitor be?

    The top of the monitor should be at or slightly below eye level. The center of the screen should be about 15-20 degrees below horizontal eye level.

    Should I use a footrest?

    If your feet do not rest flat on the floor when your chair is at the correct height, a footrest is recommended to maintain proper posture.

    Ready to run the numbers?

    Open Ergonomic Desk Height Calculator