The Toolerax Blog — Page 15
Practical guides and tips to get the most out of our tools — and the concepts behind them.
Cups, Grams and Tablespoons Explained
A cup of flour and a cup of sugar weigh completely different amounts. The density problem behind cups-to-grams, the US/metric cup trap, and a conversion table.
Read articleFeet & Inches to Centimeters
The exact feet-and-inches to cm method (×2.54), the common 5'10" mistakes, a reference chart, and why 1 inch equals exactly 2.54 centimeters.
Read articleHow to Calculate Fuel Cost for a Trip
The two fuel-cost formulas — L/100km and MPG — worked through with examples, why the systems point in opposite directions, and how to split costs fairly.
Read articleHow a Due Date Is Calculated
Why due dates count from the last period rather than conception, how cycle length shifts the estimate, and what the 40-week number really means statistically.
Read articleHourly Rate to Annual Salary
Convert an hourly wage to a yearly salary and back: the 2,080-hour year, the double-it shortcut, and the assumptions that hide in offers.
Read articleHow to Calculate Your Grade
Weighted grade math step by step, plus the formula for the exact final exam score your target grade requires.
Read articleWhat Is Standard Deviation?
Standard deviation measures how spread out data is. Learn the step-by-step calculation, sample vs population (n vs n−1), and the 68-95-99.7 rule.
Read articleMean, Median and Mode Explained
The mean spreads the total, the median resists outliers, the mode finds the most common value. Here's what each average hides, and when it lies.
Read articleHow to Add and Simplify Fractions
Step-by-step fraction rules: common denominators for adding, flip-and-multiply for dividing, GCD simplification, and the classic mistakes to avoid.
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