Duct Weight & Surface Area Calculator Duct Shape Rectangular Round / Spiral Width (inches) Height (inches) Section Length (feet) Material Gauge (Galvanized Steel) 26 Gauge (0.906 lb/sqft) 24 Gauge (1.156 lb/sqft) 22 Gauge (1.406 lb/sqft) 20 Gauge (1.656 lb/sqft) 18…

Dog Ovulation & Fertile Window Calculator First Day of Heat (Proestrus Bleeding): Average Proestrus Duration (Days): Standard is 9 days. Adjust if you know your dog’s specific history. Calculate Breeding Dates Estimated Breeding Schedule function calculateDogOvulation() { var dateInput =…

Drinking Age Calculator Date of Birth January February March April May June July August September October November December Legal Drinking Age in Your Location 21 (USA, etc.) 18 (UK, Australia, Canada, Mexico, etc.) 19 (South Korea, some Canadian provinces) 16…

DVR Recording Time Calculator Estimate how many days your security footage will last. Number of Cameras Resolution / Bitrate (per cam) 720p Low (1 Mbps) 720p High (2 Mbps) 1080p Standard (4 Mbps) 1080p High (6 Mbps) 4K / 8MP…

Dirt Bike Size Calculator Find the perfect frame size and engine displacement for your height and skill level. Rider Height (inches) Inseam (inches) Rider Age Group Adult (16+) Teen (12-15) Kid (Under 12) Experience Level Beginner Intermediate Advanced / Pro…

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Reinforcement Development Length Calculator (ACI 318) Bar Diameter (db) – inches Yield Strength (fy) – psi Concrete Strength (f’c) – psi Casting Position (ψt) Top Bar (> 12in fresh concrete below) Other (Bottom / Normal) Epoxy Coating (ψe) Uncoated /…

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Dental Negligence Compensation Calculator Primary Injury Type: Minor Dental Damage (Chipped teeth/Pain) Loss of or Damage to Front Tooth Loss of or Damage to Back Tooth Significant Nerve Damage Severe Chronic Pain / Loss of Multiple Teeth Major Periodontal Disease…