Work Block Planner Use this calculator to determine the duration of individual work blocks based on your total project hours and the desired number of blocks, or to calculate total hours needed for a set number of blocks with a…

VIX Index Calculator (Simplified) Estimate the VIX Index based on near-term and next-term implied volatilities. Near-Term Time to Expiration (days): Near-Term Implied Volatility (annualized %): Next-Term Time to Expiration (days): Next-Term Implied Volatility (annualized %): Calculate VIX Calculated VIX Index:…

HVAC Duct Sizing Calculator Required Airflow (CFM): Enter the total airflow required for the space (Cubic Feet per Minute). Desired Air Velocity (FPM): Typical values: 600-900 FPM for residential branch ducts, 900-1200 FPM for residential main ducts, 1200-1800 FPM for…

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HVAC CFM Calculator Use this calculator to estimate the required Cubic Feet per Minute (CFM) for your HVAC system to adequately heat or cool a specific room or area, based on its volume and desired air changes per hour (ACH).…

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Unemployment Rate Calculator Enter the number of employed and unemployed individuals, along with the total working-age population, to calculate the unemployment rate and labor force participation rate. Number of Employed Persons: Number of Unemployed Persons: Total Working-Age Population (16+): Calculate…

HS Calculator: Hypotenuse & Angle Vertical Height (h) (e.g., meters): Horizontal Distance (s) (e.g., meters): Calculate Results: Hypotenuse / Direct Distance (d): Angle of Elevation (θ): function calculateHS() { var verticalHeight = parseFloat(document.getElementById(‘verticalHeight’).value); var horizontalDistance = parseFloat(document.getElementById(‘horizontalDistance’).value); if (isNaN(verticalHeight) ||…

HPLC Column Volume Calculator Column Length (L) in mm: Column Internal Diameter (ID) in mm: Total Porosity (εt) (e.g., 0.6-0.8): This represents the fraction of the column volume occupied by mobile phase. Calculate Column Volume function calculateColumnVolume() { var columnLength…

Roof Pitch Calculator Total Rise (in inches): The vertical distance from the top of the wall plate to the ridge. Total Run (in inches): The horizontal distance from the outside of the wall plate to the center of the ridge…