Input method Semi-major axis (AU) Orbital period (days) Star radius R⊙ Planet radius (optional) R⊕ If left blank, planet radius is ignored in the probability (small-planet approximation). Semi-major axis AU Orbital period days Host star mass M⊙ Used only when using orbital period to compute semi-major axis. Calculate Reset Semi-major axis (AU) Transit probability (decimal)…
⚡ Total Energy Expenditure Calculator Gender: SelectMaleFemale Age (years): Weight (kg): Height (cm): Activity Level: Select activity levelSedentary (little or no exercise)Lightly active (1–3 days/week)Moderately active (3–5 days/week)Very active (6–7 days/week)Extra active (hard exercise & physical job) Calculate Reset BMR (Basal Metabolic Rate): kcal/day Total Energy Expenditure (TEE): kcal/day Health Tip: Understanding how many calories…
If you’re working more than one job, or if both you and your spouse are employed, calculating tax withholdings can feel complicated. Different jobs may push you into higher tax brackets, and without careful planning, you could end up owing more at tax time or overpaying throughout the year. The Multiple Jobs Worksheet Calculator is…
Outer Diameter (mm): Wall Thickness (mm): Inner Diameter (mm): Copy Cross-Sectional Area (mm²): Copy Calculate Reset In mechanical engineering and design, hollow shafts are widely used in machines, vehicles, and industrial applications. Compared to solid shafts, hollow shafts offer the advantage of being lighter in weight while maintaining strength and torque capacity. Our Hollow Shaft…
In the U.S. Air Force, physical fitness isn’t just about running speed or push-up counts—it’s also about body composition. The Air Force uses body fat percentage as part of its assessment for recruits and active-duty members to ensure health, readiness, and mission capability. The Air Force Body Fat Calculator is a convenient tool designed to…
Height (inches): Weight (pounds): Calculate BMI Reset Your Results: Physical fitness is a core requirement for anyone serving in the United States Air Force. Along with strength and endurance, body composition plays a major role in determining eligibility for service and career advancement. One of the key measurements used to assess this is Body Mass…
Commercial Mortgage Calculator Loan Amount ($): Loan Term (Years): Interest Rate (%): Calculate Reset Monthly Payment: $ Total Interest Paid: $ Total Loan Cost: $ When purchasing or refinancing a commercial property, one of the most important questions is: How much will my mortgage cost each month? A Commercial Mortgage Calculator gives you the answer…
HD Horizon Distance Calculator Compute distance to the horizon for a given observer height. Outputs line-of-sight and surface (arc) distances. Observer height Unit meters (m)kilometers (km)feet (ft)miles (mi) Planet radius (optional) Enter radius in kilometers. Leave empty for Earth (6371 km). Output units meters (m)kilometers (km)feet (ft)miles (mi) Calculate Reset Copy Results Line-of-sight distance to…
RPM to Rads Calculator Convert Revolutions Per Minute to Radians Per Second RPM (Revolutions Per Minute) Calculate Reset Result (Radians Per Second) Copy Result Formula: Radians per second = RPM × (2π ÷ 60) Radians per second = RPM × 0.10472 In physics, mechanics, and engineering, rotational motion plays a critical role. Whether it’s a…
Enter Value: Multiply by Golden Ratio (φ = 1.618…) Divide by Golden Ratio (φ = 1.618…) Find Golden Ratio Segments Result: Copy Larger Segment: Copy Smaller Segment: Copy Golden Ratio (φ): 1.6180339887… Formula: φ = (1 + √5) / 2 Calculate Reset The Inverse Square Law is a fundamental principle in physics that describes how…