Calculator and Converter for the United States
Sales tax, tips, discounts and imperial units explained for everyday life in the US, with dollars (USD).
Sales tax
There is no single national sales tax. States, counties and cities set their own, and the amount is added at the register. At 7%, a 50.00 item costs 53.50 (50 × 1.07). To find the pre-tax price from a 53.50 receipt, divide by 1.07. Use the percentage calculator with your local rate. The steps are in add and remove VAT.
Tipping
Tips of 15% to 20% are common in restaurants. On a 84.50 bill, 15% is 12.68 and 20% is 16.90. The method is in tip and split the bill.
Imperial units
| Unit | Metric |
|---|---|
| 1 inch | 2.54 cm |
| 1 foot | 30.48 cm |
| 1 mile | 1.609 km |
| 1 pound | 0.4536 kg |
| 1 US gallon | 3.785 litres |
A 70°F day is 21.1°C; see Celsius to Fahrenheit. A 6 ft 1 in height is 185.4 cm, covered in cm to feet and inches. The unit converter does all of these instantly.
Shopping and selling
Coupons and sales often stack, so multiply the factors before deciding. Online sellers can check fees and margin with the profit and loss calculator.
Online sellers and travellers
If you sell online across states, remember that the tax rate depends on the buyer location rules of each state, so confirm them before setting prices. Travellers should note that road signs use miles, fuel is sold by the gallon, and oven temperatures are in Fahrenheit, so a recipe at 350°F equals about 177°C. Keep the converter handy for these everyday switches.
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