Calculators — Guides & Articles

• How to Convert Military Time to Standard Time in Excel

  Published 2026-09-25

  Convert military time to standard 12-hour time in Excel with TEXT, TIMEVALUE and TIME formulas. Clear examples, edge cases, and a faster online tool included.

  

• Calculate Metal Weight in Excel: Formulas + Faster Tool

  Published 2026-09-25

  Calculate metal weight in Excel using cross-section area, length, and density. Get the formulas, a worked example, and a faster browser-based alternative tool.

  

• How to Calculate Values on a Logarithmic Scale

  Published 2026-09-25

  On a logarithmic scale, each tick multiplies by a fixed factor instead of adding. Compute log_b(x) with the free Logarithm Calculator for any base, plus ln,…

  

• How to Convert Length Into Volume Without Extra Math

  Published 2026-09-25

  Converting length into volume means converting every length measurement that feeds a volume formula. The Length Converter swaps cm, m, inches instantly.

  

• How to Check Any Year for Leap Year Status

  Published 2026-09-24

  Check any year for leap year status using the Gregorian 400-year rule. See whether it is a leap year, how many days it has, and the leap years before and…

  

• How to Calculate LCM in Mathematics the Standard Way

  Published 2026-09-24

  The standard way to calculate LCM in mathematics: the gcd formula lcm(a,b)=|a×b|÷gcd(a,b), prime factorization, listing multiples, and edge cases.

  

• How to Solve the Fractional Knapsack Problem Step by Step

  Published 2026-09-24

  The fractional knapsack problem is solved greedily by value-to-weight ratio. See the exact greedy steps, why it fails on whole items, and the 0/1 answer.

  

• How to Calculate Ideal Weight for Men: A Practical Guide

  Published 2026-09-24

  Calculate your ideal weight for men with the Devine, Robinson, Miller and Hamwi formulas side by side. Results in kg and lb, plus a healthy BMI range.

  

• How to Find Hexagon Area with the Apothem

  Published 2026-09-24

  Use A = 2√3·a² to find a hexagon's area from its apothem. See how it connects to the side-length formula, plus a free calculator.

  

• Hardness Conversion Calculator Example: HRC 40 Walkthrough

  Published 2026-09-24

  See a hardness conversion calculator example using HRC 40. The full step-by-step output across Rockwell C/B, Vickers, Brinell, and tensile strength.