Standing Desk Timer Calculator

Standing desk sit/stand ratio calculates the optimal balance between sitting and standing throughout the workday, based on ergonomic research and physiological guidelines for reducing the health risks of prolonged sedentary behavior.

Core formula: Standing Time (hours) = Total Work Hours × Standing Ratio Sitting Time (hours) = Total Work Hours − Standing Time Transitions per Hour = 1 ÷ Interval Length (hours)

Evidence-based ratio recommendations:

Transition interval recommendations:

• Transition every 30–45 minutes (most commonly recommended)
• Brief walks (2–3 minutes) between transitions amplify the benefit
• Use apps or smart desk reminders to enforce intervals

Worked example: 8-hour workday, 1:1 ratio, 60-minute cycles, 70 kg: Standing = 8 × 0.50 = 4.0 hours, sitting 4.0 hours Each cycle = 30 min standing, then 30 min sitting, repeated 8 times, which is 16 position changes

Calorie burn, and why the number here is smaller than elsewhere

This is worth reading, because most standing-desk pages get it badly wrong and this one used to as well.

The 2011 Compendium of Physical Activities puts standing quietly at 1.3 METs, exactly the same as sitting. It credits standing with no extra burn at all. Plenty of calculators instead use 1.8, which would make standing worth about 37 kcal an hour.

The measured answer sits between the two. A 2018 meta-analysis pooling 46 studies found the real difference between sitting and standing is 0.15 kcal per minute, or 9 to 11 kcal an hour for a typical adult. That corresponds to a standing MET of about 1.45, which is what this calculator uses.

So four hours of standing instead of sitting is about 44 extra calories a day, not the 200 this page used to print. Over a working year that is roughly 11,000 calories, or 1.4 kg on paper, and trials that actually weigh people find less than that because appetite adjusts.

Health risks of too much standing: Prolonged uninterrupted standing is associated with varicose veins, lower back pain, and leg fatigue. The key is alternation, not the elimination of sitting. An anti-fatigue mat, correct desk height (elbows near 90° when standing), and supportive shoes matter more than the exact ratio you pick.