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Blog - page 9
More guides and examples for calculators, formulas and useful everyday concepts.
Articles
Page 9 of 10.
Math · 4 min read
How to add a percentage to a number
Increase a number by a percentage using a direct formula for prices, markups, fees and growth.
Read articleMath · 4 min read
How to subtract a percentage from a number
Subtract a percentage to calculate discounts, reductions and lower target values without mixing up the base.
Read articleFinance · 6 min read
Compound interest with monthly contributions
See how recurring monthly deposits grow, calculate future value and separate your contributions from investment earnings.
Read articleFinance · 6 min read
CAGR: compound annual growth rate explained
Learn what CAGR measures, how to calculate it and why it differs from a simple average annual return.
Read articleFinance · 6 min read
Nominal vs. effective interest rate: what is the difference?
Learn how compounding turns a nominal annual rate into an effective annual rate and compare products on a consistent basis.
Read articleFinance · 5 min read
What is compound interest and how does it work?
Learn how compound interest works, why time matters and how reinvested earnings can accelerate growth.
Read articleFinance · 6 min read
Compound interest formula, step by step
Understand every variable in the compound interest formula and apply it to annual, monthly and recurring-contribution examples.
Read articleLegal & Taxes · 5 min read
How to calculate VAT step by step
Add VAT to a net price or extract VAT from a tax-inclusive total using the correct formulas.
Read articleFinance · 4 min read
Rule of 72: estimate how long money takes to double
Use the Rule of 72 to estimate doubling time under compound growth, and understand where this mental shortcut falls short.
Read articleFinance · 5 min read
Simple vs. compound interest
Compare simple and compound interest using clear formulas, the same worked example and a side-by-side table.
Read articleLegal & Taxes · 4 min read
How to extract VAT from a tax-inclusive price
Find the net price and VAT component inside a gross total without incorrectly subtracting the headline rate.
Read articleLegal & Taxes · 4 min read
How to add VAT to a net price
Calculate the VAT amount and gross total for quotations, invoices and sales.
Read article