Calculators — Guides & Articles

• How to Calculate GCF Using Prime Factorization

  Published 2026-09-05

  Prime factorization is the textbook way to find the GCF. See the steps worked by hand, then try a free GCF calculator that returns the answer as you type.

  

• How to Calculate Gas Mileage for a Trip in 3 Steps

  Published 2026-09-05

  Calculate your trip's gas mileage in three steps: pick imperial or metric, enter distance and fuel used, and read MPG, L/100km, and km/L instantly.

  

• How to Convert Frequency to Velocity: v = f × λ

  Published 2026-09-05

  Convert frequency to velocity using v = f × λ. Standardize your frequency units with the Frequency Converter, then calculate wave speed in any system.

  

• How to Calculate Fractional Excretion of Urea

  Published 2026-09-05

  Method to calculate fractional excretion of urea (FEUrea) from paired serum and urine labs, with a free Fraction Calculator to handle the arithmetic.

  

• How to Convert Force Into Velocity: The Formula

  Published 2026-09-05

  Force and velocity aren't directly convertible — use Newton's second law with mass and time. Formula, worked example, and Force Converter tips.

  

• How to Calculate Flooring Quantity: Formula and Boxes

  Published 2026-09-05

  Calculate flooring quantity with the three-number formula: length × width, plus 5–20% waste, divided by box coverage. Whole boxes, rounded up, in feet or…

  

• How to Calculate Exponential Smoothing Alpha in Excel

  Published 2026-09-04

  Exponential smoothing weights in Excel come from powers of (1 − α). See the formula, pick an alpha, and compute each weight with our Exponent Calculator.

  

• Calculate EOQ From the Following Information

  Published 2026-09-04

  Calculate EOQ from the following information by mapping each given value to demand, ordering, and holding cost, then applying Q = √(2DS/H).

  

• How to Convert Energy to Electricity (in kWh)

  Published 2026-09-04

  Convert energy to electricity in kWh using a free browser-based tool. Steps for joules, calories, kcal, BTU, eV and more, with no uploads.

  

• How to Calculate Oval Surface Area: Formula and Steps

  Published 2026-09-04

  Calculate oval surface area using A = π·a·b. Learn the formula, the step-by-step method, and how to avoid the most common unit and axis mistake.