Number of Successes (r): Probability of Success (p): Number of Failures (k): Distribution Type: Number of failures before r successesNumber of trials to achieve r successes Calculate Reset Probability Mass Function P(X = k): Copy Probability as Percentage: Copy Cumulative Probability P(X ≤ k): Copy Mean (Expected Value): Copy Variance: Copy Standard Deviation: Copy Binomial … Read more
Arc Length (s): Radius (r): Central Angle (θ) – Optional: Angle Unit: Degrees (°)Radians (rad) Calculate Reset Central Angle in Degrees (θ°): Copy Central Angle in Radians (θ rad): Copy Arc Length (s): Copy Radius (r): Copy Sector Area: Copy Circle Circumference: Copy Central Angle Formulas Arc Length: s = rθ (θ in radians) Central … Read more
The Relative Standard Deviation (RSD) Calculator is a powerful tool for calculating the precision of a dataset. RSD, also known as the coefficient of variation, expresses the standard deviation as a percentage of the mean. This metric is widely used in statistics, laboratories, quality control, and research to assess variability in data relative to its … Read more
Initial Value (V₁): $ Final Value (V₂): $ Currency/Unit: Dollar ($)Pound (£)No Symbol (Numbers only) Calculate Reset Absolute Change (Δ): Copy Relative Change (%): Copy Percentage Point Change: Copy Growth Factor: Copy Change Direction: Copy Relative Change Formulas Absolute Change: Δ = V₂ – V₁ Relative Change: % = (V₂ – V₁) / V₁ × … Read more
An inscribed angle is an angle formed by two chords in a circle that share an endpoint on the circle. Understanding inscribed angles is essential in geometry, trigonometry, and circle theorems. The Inscribe Angle Calculator allows you to calculate the value of any inscribed angle instantly, providing accurate results along with step-by-step explanations for easy … Read more
Doubling time refers to the period required for a quantity, such as a population, investment, or bacteria culture, to double in size or value. It’s a vital metric in finance, biology, and demographics, helping individuals and professionals forecast growth and plan accordingly. The Doubling Time Calculator allows you to calculate the time it takes for … Read more
Calculation Method: Find Equivalent Ratio Check if Ratios are Equivalent Simplify Ratio Original Ratio : Find Equivalent Ratio Multiply by factor Given first term Given second term First Ratio : Second Ratio : Ratio to Simplify : Calculate Reset Result: Copy Equivalent Ratios: Copy As Decimal: Copy As Percentage: % Copy Common Ratio Examples 1:2 … Read more
Original Value: New Value: Or calculate using percentage: Base Value: Percent Decrease (%): Calculate Reset Percent Decrease: % Copy Absolute Change: Copy Final Value (when using percentage): Copy Decrease Ratio: Copy Percent Decrease Formula Percent Decrease = ((Original Value – New Value) / Original Value) × 100% New Value = Original Value × (1 – … Read more
Side A: Side B: Side C: Calculate Reset Triangle Area: Copy Perimeter: Copy Semi-perimeter (s): Copy Triangle Validity: Copy Heron’s Formula Area = √[s(s-a)(s-b)(s-c)] Where s = (a + b + c) / 2 Step-by-step calculation: Calculating the area of a triangle when only the side lengths are known can be tricky. Heron’s Formula provides … Read more
In geometry and engineering, the centroid represents the center of mass of a shape or object. It is the point where a shape would balance perfectly if it were made of a uniform material. Finding the centroid manually, especially for complex shapes, can be time-consuming and prone to errors. The Centroid Calculator simplifies this process, … Read more