Posts in Calculators
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How to Solve a Proportion and Simplify a Ratio (With Examples)
Learn how to solve a proportion with cross multiplication and simplify a ratio to lowest terms, with worked examples and a free calculator.
July 13, 2026 -
GCD and LCM: How to Find the Greatest Common Divisor and Least Common Multiple
Learn the Euclidean algorithm and prime factorization to find GCD and LCM, with worked examples for two and three numbers.
July 10, 2026 -
How to Convert Fahrenheit to Celsius (Weather and Oven Temperatures)
The Fahrenheit to Celsius formula, exact conversions for common US oven and weather readings, and the rounding mistake that ruins a bake.
July 10, 2026 -
How to Find the Prime Factorization of a Number
Learn prime factorization by hand with factor trees and trial division, worked examples, a divisors table, and a free calculator to check your work.
July 10, 2026 -
Ohm's Law Explained: The Full Formula Wheel and a Worked Example
Ohm's law in plain terms, all 12 formulas for voltage, current, resistance and power, and a real worked example sizing a resistor for an LED.
July 10, 2026 -
How to Calculate Your Engagement Rate (With Real Examples)
Learn how to calculate engagement rate, the followers-vs-reach difference, and where your number lands on the benchmark scale. Free calculator included.
July 9, 2026 -
How to Convert Cooking Measurements (Cups, Tablespoons, ML)
Convert cups, tablespoons and teaspoons to milliliters with the exact US customary factors, a worked recipe example, and a free conversion calculator.
July 7, 2026 -
How to Add and Subtract Fractions with Different Denominators
Learn to add and subtract fractions with different denominators using the LCD method, with two worked examples and a common denominator table.
July 5, 2026