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30 JUN 2026

How to Calculate Gear Ratios: Simple, Compound & Planetary (With Examples)

Posted By: Marcus Webb

Learn to calculate simple, compound, and planetary gear ratios with step-by-step worked examples, formulas, torque relationships, and a free gear ratio calculator.

Latest Posts

30JUN

BMI Calculator for Women: Healthy Ranges, Age & Body Fat Explained

BMI works differently for women than men. Healthy body fat percentages are higher for women, BMI thresholds can vary with age, and pregnancy changes everything. This guide covers healthy BMI ranges by age, body fat comparison, and when BMI alone is insufficient.

Read: BMI Calculator for Women: Healthy Ranges, Age & Body Fat Explained →

30JUN

New BMI vs Old BMI: Which Formula Should You Use in 2026?

The "new BMI" corrects a 200-year-old height bias in the standard formula. We compare both formulas side by side, show worked examples for tall and short adults, and explain when the difference actually matters for your health.

Read: New BMI vs Old BMI: Which Formula Should You Use in 2026? →

30JUN

How to Calculate Gear Ratios: Simple, Compound & Planetary (With Examples)

Learn to calculate simple, compound, and planetary gear ratios with step-by-step worked examples, formulas, torque relationships, and a free gear ratio calculator.

Read: How to Calculate Gear Ratios: Simple, Compound & Planetary (With Examples) →

22JUN

How to Set Your Macros Based on TDEE: Cut, Bulk & Maintain

To set macros, start with your TDEE, apply a calorie target (deficit for fat loss, surplus for muscle), then split into protein, fat, and carbs (remainder).

Read: How to Set Your Macros Based on TDEE: Cut, Bulk & Maintain →

22JUN

Average Net Worth by Age in America (2026): Federal Reserve Data

The Federal Reserve's 2022 Survey of Consumer Finances shows median net worth for Americans under 35 is $39,000 while those 65–74 hold $409,900.

Read: Average Net Worth by Age in America (2026): Federal Reserve Data →

22JUN

Running Pace Guide: How to Calculate Your 5K, 10K & Marathon Time

Learn how to calculate your running pace, set race time goals, and train in the right heart rate zones. Includes pace tables for 5K, 10K, half marathon, and marathon.

Read: Running Pace Guide: How to Calculate Your 5K, 10K & Marathon Time →

22JUN

LTV Ratio Explained: Why It Affects Your Rate, PMI, and Approval

Loan-to-value ratio (LTV) is the percentage of a home's value you are borrowing. An 80% LTV means you are putting 20% down. It controls whether you pay PMI, what interest rate you get, and whether you qualify at all. Here is everything you need to know.

Read: LTV Ratio Explained: Why It Affects Your Rate, PMI, and Approval →

21JUN

Dollar-Cost Averaging: How It Works and Why It Beats Timing the Market

Dollar-cost averaging invests a fixed amount at regular intervals regardless of price. It mechanically buys more shares when prices are low and removes emotional decision-making. Research shows DCA outperforms market timing in 68% of scenarios over 10 years.

Read: Dollar-Cost Averaging: How It Works and Why It Beats Timing the Market →

21JUN

Index Funds vs ETFs: What Is the Difference and Which Should You Buy?

Index funds and ETFs both track market indices passively with low fees. Key differences: trading mechanics, tax efficiency, and minimums. For most 2026 beginners, ETFs or Fidelity ZERO funds are the practical starting point.

Read: Index Funds vs ETFs: What Is the Difference and Which Should You Buy? →

21JUN

How to Invest Money for Beginners: Step-by-Step Guide for 2026

A complete step-by-step guide to investing money for beginners in 2026. Covers emergency funds, account types, index funds, asset allocation, and how much to invest per month.

Read: How to Invest Money for Beginners: Step-by-Step Guide for 2026 →

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