Tip Calculator
Fast, friendly tipping — no math required.
Common conversions at a glance
- 1 mile
- 1.60934 kilometers
- 1 kilometer
- 0.621371 miles
- 1 pound (lb)
- 0.453592 kilograms
- 1 kilogram
- 2.20462 pounds
- 1 inch
- 2.54 centimeters
- 1 foot
- 30.48 centimeters
- 1 US gallon
- 3.78541 liters
- 1 liter
- 0.264172 US gallons
- 1 US cup
- 236.588 milliliters
- 1 acre
- 4,046.86 square meters (43,560 sq ft)
- 1 square meter
- 10.7639 square feet
- 1 gigabyte (GB)
- 1,000 megabytes (1 GiB = 1,024 MiB)
- 0 °C
- 32 °F (273.15 K)
- 100 °C
- 212 °F (373.15 K)
- 20% tip on $50
- $10.00 tip, $60.00 total
- 40% off $37.78
- $15.11 off, $22.67 final price
- 1430 military time
- 2:30 PM
- 0000 military time
- 12:00 AM (midnight)
Frequently asked questions
›How do you calculate a tip?
Multiply the pre-tax bill by the tip rate as a decimal. For a 20% tip on $50: 50 × 0.20 = $10 tip, $60 total. To split, divide the total by the number of people.
›How do you calculate a percentage discount?
Multiply the price by the discount percentage to get the savings, then subtract it. For 40% off $37.78: 37.78 × 0.40 = $15.11 saved, leaving $22.67.
›How do you convert Celsius to Fahrenheit?
Multiply the Celsius value by 9/5 and add 32. So 25 °C × 1.8 + 32 = 77 °F. To reverse it, subtract 32 and multiply by 5/9.
›How do you convert military time to standard time?
For 0000–0059 use 12 AM, for 0100–1159 keep the hour and add AM, 1200–1259 is 12 PM, and for 1300–2359 subtract 12 and add PM. 1430 becomes 2:30 PM.
›How do you calculate elapsed time between two times?
Convert both times to minutes since midnight, subtract the start from the end, and add 1,440 minutes if the end time falls on the next day. Then divide by 60 for hours.
›How do you convert a decimal to a fraction?
Write the decimal over a power of ten matching its decimal places, then reduce by the greatest common divisor. 0.375 = 375/1000 = 3/8.
›Are the currency exchange rates live?
Yes. c0nvert.net pulls live mid-market exchange rates and caches them briefly, so conversions reflect current market values rather than a fixed table.
›Is c0nvert.net free?
Yes. Every calculator and converter on c0nvert.net is free, needs no sign-up or installation, and runs in any modern browser on mobile or desktop.