Everyday Math

This subcategory contains 6 tools for everyday calculations. Percentage calculator, Tip calculator and Unit price comparison help with a bill, a discount or comparing offers. Rule of three, Body mass index and VAT calculator are also included. They are free and need no account, useful in shops, at the table, while travelling or at work.

Choose based on the question you have. Percentage calculator handles a share of a value, Rule of three finds a proportion and Tip calculator splits a bill. Unit price comparison compares two offers, Body mass index computes BMI and its category, and VAT calculator starts from a net amount. Begin with the calculation that most closely matches your situation.

How to use

  1. For a discount, an increase or a share, start with Percentage calculator and check whether you begin from the initial amount or the result.
  2. For a simple proportion, use Rule of three. To split a bill, open Tip calculator and check the number of shares.
  3. To compare two offers, enter prices and quantities in Unit price comparison, then keep the option with the clearest unit price.
  4. For VAT, start from the net amount with VAT calculator. For a body reference, use Body mass index and read the displayed category.

Frequently asked questions

Can I work out a discount and a final price?

Percentage calculator lets you calculate a percentage of a value. For a bill with a tip, Tip calculator helps split the total. These tools remain free and require no registration.

Does Unit price comparison work for two pack sizes?

Yes, it compares two offers by their unit price. This helps when a product comes in different weights, volumes or packs and the labels are not enough.

Does VAT calculator start from the net amount?

Yes, its description says it calculates tax and total from a net amount. To find a share or a change, use Percentage calculator instead.

Can Percentage calculator help find a price after a discount?

Yes, it calculates a percentage of a value. You can get the discount, then subtract it from the starting price to check the final price. For a bill with a tip, use Tip calculator instead.

Does Body mass index give a medical diagnosis?

No, it computes BMI and its category as a reference. That result does not replace advice from a health professional. Use it to place a value, then ask for suitable guidance if the question concerns you.

Tools in the same category