Formula Hub

Inflation formulas measure how rising consumer price indices erode money purchasing power over time, calculating equivalent future cost of living requirements.

The Inflation Rate Formula calculates the percentage change in the Consumer Price Index (CPI) over a specific period, measuring price inflation and purchasing power loss.

One kilogram is equal to approximately 2.20462262 pounds. To convert kilograms to pounds, multiply the mass in kilograms by 2.20462262.

One kilometer equals approximately 0.621371 statute miles (or 1 mile = 1.609344 kilometers). To convert kilometers to miles, multiply by 0.621371.

The Least Common Multiple (LCM) is the smallest positive integer divisible by all numbers in a set, while the Highest Common Factor (HCF or GCD) is the largest integer that divides all numbers without a remainder. For any two positive integers, the product of their LCM and HCF equals the product of the numbers.

Lean Body Mass represents everything in the body except fat. The Boer formula estimates it directly from weight and height using gender-specific regression coefficients, without requiring a body fat percentage measurement. It is commonly averaged together with other validated equations (James, Hume formulas) for a more robust estimate, and is useful for tracking muscle mass and setting nutrition targets independent of fat mass changes.

One US liquid gallon equals 3.78541 liters (approx 0.264172 US gallons per liter). An Imperial UK gallon equals 4.54609 liters.

The Lumpsum Mutual Fund Formula calculates the future value of a one-time upfront investment based on compound interest. It models how capital appreciates over time when 100% of the funds compound continuously or periodically.

Once a daily calorie target is set, that budget must be split across the three macronutrients. Each diet archetype allocates a different percentage of calories to protein, carbs, and fat — for example, a ketogenic diet allocates only 5% to carbs and 75% to fat, while a balanced diet spreads more evenly. Converting each macro's calorie share into grams requires dividing by its calories-per-gram value (4 for protein/carbs, 9 for fat, since fat is more energy-dense).

Central tendency formulas calculate the arithmetic average (Mean), middle ranking value (Median), most repeated entry (Mode), and total statistical spread (Range) for a numerical dataset.