2 practical tools

Free Business Calculators

Calculate VAT, gross profit, margin and markup with clear result breakdowns.

About these tools

ToolTapGo calculators focus on common business arithmetic and show the components behind the result. They are useful for quick estimates but do not replace accounting or tax advice.

When to use them

Use them when checking a price before sending a quote, separating VAT from a gross total or comparing selling price with cost.

Frequently asked questions

What is the difference between margin and markup?

Margin measures profit as a percentage of the selling price, while markup measures profit as a percentage of cost.

Can I change the VAT rate?

Yes. Enter the rate that applies to the specific transaction rather than assuming the default is always correct.

Do the calculators include overheads?

Only values entered into the calculation are included. Add fees, labour, returns and overheads to the cost when they are relevant.

What this category covers

Calculators turn labelled values into an estimate or numeric breakdown. Use the narrowest calculator that matches the question so the units, formula and assumptions remain clear.

Recommended starting tools

  • Percentage Calculator — Calculate percentages, percentage increase or decrease and reverse percentages from the original and final values.
  • Tip and Bill Split Calculator — Calculate a tip, total bill and per-person share using the bill amount, tip rate and number of people.
  • Age and Birthday Calculator — Calculate an exact age, total days alive and the time remaining until the next birthday from a date of birth.

How to choose

Read every unit before entering a value, keep source figures available, and check the formula or assumptions on sensitive financial and health pages.

Frequently asked questions

Why can two calculators disagree?

They may use different units, rounding, dates or assumptions. Compare the method, not only the final number.

Are displayed results exact?

Some are exact transformations; others are estimates. The tool-specific limitations explain which applies.