Blog
Step-by-step guides on percentages, formulas, and everyday calculations.
Guides
-
How to Calculate VAT
Add VAT to a price, remove it, or find the VAT amount for any rate. Includes UK 20%, EU rates, and worked examples. -
How to Calculate a Tip
Find the tip amount for any bill. Includes common tip percentages, mental shortcuts, and how to split the bill. -
Percentage Increase Explained
What percentage increase means, the formula, worked examples, and the difference between increase and percentage points. -
What is 20% of a Number?
How to find 20% of any number instantly — with a formula, examples, and a free calculator. -
What is a Good Discount Percentage?
How retailers set discounts, what makes a deal genuinely good, and how to calculate your real saving. -
Percentage Formula in Excel
How to calculate percentages in Excel. Covers percentage of a number, percentage change, and formatting tips. -
Percentage vs Percentage Points
The difference between a percentage change and a percentage point change — and why it matters.
Free calculators
- Percentage Calculator — find X% of Y, or what percent X is of Y
- Percentage Change Calculator
- Discount Calculator
- Tip Calculator
- VAT Calculator
- Fraction to Percentage