Lost Socks Probability Calculator
Example: 4 people × 5 loads = 38% weekly loss risk
This calculator uses the published Sock Loss Index formula to estimate your weekly probability of losing a sock. It considers household size, laundry frequency, and your attention and attitude toward laundry care. The result includes a risk level and estimated number of socks lost per year.
Socks lost over the years
Weekly Loss Probability
Chance of losing at least one sock this week
Risk Rating
Your sock loss risk category
Expected Annual Loss
Estimated socks lost per year
Annual Replacement Cost
Estimated yearly cost to replace lost socks
How We Calculate This
The Sock Loss Index (SLI) is calculated as: SLI = (People × Loads) + Socks - (3 × Positivity × Attention). Weekly probability uses the formula: p = 0.40 + 0.006×L + 0.0015×S - 0.02×(Positivity×Attention), clamped between 1% and 99%.
Methodology last reviewed: September 2023. How SparkCalc works
Frequently Asked Questions
Where does the Sock Loss Index formula come from?
The formula is based on a lighthearted study commissioned by Samsung that analyzed factors contributing to sock loss during laundry. While tongue-in-cheek, it incorporates real behavioral factors like household complexity and attention to laundry care.
How can I reduce my sock loss probability?
Increase your attention score by using mesh laundry bags, pairing socks before washing, checking drum seals and gaps, and being mindful when loading and unloading. A positive attitude toward laundry also correlates with fewer losses!
Why does attitude affect sock loss?
People who enjoy or take pride in doing laundry tend to be more careful and attentive throughout the process, reducing the chance of socks escaping into machine gaps, falling behind appliances, or being accidentally discarded.
Is this calculator scientifically accurate?
This calculator is primarily for entertainment, though it's based on real research into laundry habits. Actual sock loss varies widely based on machine type, sock quality, and many other factors not captured here.
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This calculator is for entertainment purposes. Actual sock loss rates vary based on washing machine type, sock quality, and household-specific factors.