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STD Risk Calculator – Assess Your Sexual Health Risk Score STD Risk Calculator A professional tool to estimate your exposure probability and sexual health risk score. Number of Partners (Last 12 Months) Enter the total number of unique sexual partners in the past year. Please enter a valid non-negative number. Protection Usage Frequency Always (Every … Read more

Bending Stress Calculator – Structural Calculations Bending Stress Calculator Use this Bending Stress Calculator to find the maximum stress and deflection in a simply supported beam with a central point load. Beam Bending Stress Calculator Beam Shape: RectangleCircleI-Beam Width (b, meters): Enter the width of the rectangular beam. Height (h, meters): Enter the height of … Read more

Subscription Box Calculator – Calculate Your Profitability Subscription Box Calculator Use our Subscription Box Calculator to estimate the profitability and key metrics of your subscription box business. Enter your costs, pricing, and subscriber information to get started. Subscription Box Profitability Calculator Cost Per Box (Materials, Packaging, Fulfillment Labor) ($): Cost to source products, package, and … Read more

STS Risk Score Calculator | Accurate Cardiac Surgery Risk Assessment Cardiac Surgery Risk Assessment STS Risk Score Calculator (Simplified Educational Model) This is a simplified educational tool to illustrate factors contributing to cardiac surgery risk. It is NOT a substitute for the official STS Risk Score or clinical judgment by healthcare professionals. Calculate Estimated Risk … Read more

Words Spoken Calculator: Estimate Talking Time & Word Count Words Spoken Calculator Calculate Words Spoken Estimate the total number of words spoken based on your talking speed and the duration of speech. This Words Spoken Calculator is useful for speakers, presenters, and content creators. Average Talking Speed (WPM): Words Per Minute (typical range: 110-150 WPM … Read more

Soil Calculator: Estimate Garden & Landscaping Soil Volume Soil Calculator Estimate soil volume for your garden or landscaping project. Area Length Area Width Length & Width Units Meters (m)Feet (ft) Soil Depth Depth Units Centimeters (cm)Inches (in) Compaction/Settling Factor E.g., 1.1 for 10% extra, 1.2 for 20% extra to account for soil settling. Cost per … Read more

Snowboard Measurements Calculator – Find Your Size Snowboard Measurements Calculator Enter your details to get a recommended snowboard length range. Your Height (cm): Enter your height in centimeters (e.g., 175). Your Weight (kg): Enter your weight in kilograms (e.g., 75). Primary Riding Style: BeginnerAll-MountainFreestyleFreeride/Powder Choose the style you ride most often. Ability Level: BeginnerIntermediateAdvanced Select … Read more

Snell’s Law Calculator – Calculate Angle of Refraction Snell’s Law Calculator Calculate Angle of Refraction Refractive Index of Medium 1 (n1): E.g., 1.00 for air, 1.33 for water. Must be 1 or greater. Angle of Incidence (θ1) in degrees: Angle between the incident ray and the normal (0-89.99 degrees). Refractive Index of Medium 2 (n2): … Read more

Slope Degrees to Percent Calculator – Accurate Conversion Slope Degrees to Percent Calculator Convert an angle of slope from degrees to percentage using this handy slope degrees to percent calculator. Enter the angle in degrees below. Slope Angle (Degrees): Enter the angle in degrees (e.g., 5, 10, 45). Values should be between 0 and less … Read more

Simpson’s Rule Calculator – Accurate Numerical Integration Simpson’s Rule Calculator Easily approximate definite integrals using Simpson’s 1/3 rule with our online Simpson’s Rule Calculator. Enter your function, limits, and the number of intervals. Calculate Integral Function f(x): Enter the function using ‘x’ as the variable (e.g., x*x, Math.sin(x), 1/x). Use Math.* for JS math functions. … Read more