Money & finance
VAT Calculator
Add VAT to a net amount or extract the VAT already included in a gross amount using an adjustable rate.
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Money & finance
Percentage Calculator
Calculate a percentage of a value, percentage change, or a percentage increase without spreadsheet formulas.
No account required
Free to use
Guest results are temporary unless you submit a quote request; signed-in calculator history is retained for 30 days unless saved
01
Enter your details
Required fields are marked.
02
Your result
Complete the fields to generate an explainable result.
Saving is optional. Downloading a PDF does not create an account or a permanent saved result.
How to use it
Three common percentage questions
The meaning of each value changes with the selected calculation. The result always includes a short formula explanation.
- Choose the percentage question you need to answer.
- Enter X and Y using the labels shown.
- Review the result and formula summary.
Make more of this page
Make the result useful for your own situation.
Read the instructions and labels before entering information. Use consistent units and a single time period. Where the tool compares scenarios, distinguish figures you have measured from assumptions you want to test.
Review the explanation alongside the result, including what is included or excluded. A calculated example describes the values supplied; it is not a quotation, an offer or a guarantee of what will happen. Avoid entering personal or confidential information into inputs intended for general calculations.