Calculators— Guides & Articles
How to Calculate Calories for Weight Loss Step by Step
Published 2026-08-02
Calculate the calories you need for weight loss. Convert BMR to TDEE with an activity factor, then subtract 500 kcal per day to reach a safe target.
How to Estimate Brinell Hardness from Test Data
Published 2026-08-02
Use load, ball diameter and indent size to estimate Brinell hardness (BHN/HBW) with the ASTM E10 formula. Free calculator, units and a worked example.
US Bra Size Explained: Band Number and Cup Letter
Published 2026-08-02
Get your US bra size from underbust and bust measurements in inches or cm. See band and cup instantly, plus UK and EU equivalents.
How to Calculate BMR Calories and Read the Number
Published 2026-08-01
How to calculate BMR calories using Mifflin-St Jeor and the revised Harris-Benedict equation side by side, and how to read the resting calorie result.
How to Calculate BMI in Pounds: Formula and Steps
Published 2026-08-01
To calculate BMI in pounds, use BMI = 703 × weight (lb) ÷ height (in)². Learn the imperial formula, see a worked example, and try a free calculator.
2D Bin Packing Calculator: Scalar Sizes into Equal Bins
Published 2026-08-01
When a 2D bin packing problem reduces to one size per item, the Bin Packing Calculator packs labelled items into equal bins with FFD, utilization, and a…
How to Calculate Your Back-End BAC Ratio After Drinking
Published 2026-08-01
Estimate your back-end BAC ratio from drinks, weight, sex and hours using the Widmark formula. A rough current alcohol percentage — never use it to drive.
How to Calculate the Average of Percentages
Published 2026-07-31
Calculate the average of percentages from any list of values. Get the mean, median, mode, and range instantly with this free online average tool.
How to Convert Area to Diameter: Formula & Steps
Published 2026-07-31
Convert area to diameter using d = 2√(A/π). Use the free Area Converter to standardize units first, then apply the formula step by step.
Annulus Area Calculator Alternative: Find Ring Area Fast
Published 2026-07-31
Looking for an annulus area calculator alternative? Our free tool gives you π(R² − r²) instantly, with outer area, inner area, and ring width shown together.