What each tool does
Time Zone Converter
India Standard Time is UTC+5:30 all year. India is 10 hours 30 minutes ahead of New York in winter (EST) and 9 hours 30 minutes ahead in summer (EDT), and 5 hours 30 minutes ahead of London in winter (GMT) and 4 hours 30 minutes ahead in summer (BST). The US changes clocks on the second Sunday of March and first Sunday of November; the UK on the last Sundays of March and October.
Unit Converter
1 inch is exactly 2.54 cm, 1 foot is 0.3048 m and 1 pound is 0.45359237 kg, as defined by international agreement in 1959. 1 stone is 14 pounds (6.35 kg). A US gallon is 3.785 litres and a UK gallon 4.546 litres. °F = °C × 9/5 + 32.
Binary & Hex Converter
To convert binary to decimal, add the place values of each 1: 1011 = 8 + 0 + 2 + 1 = 11. To convert decimal to binary, divide by 2 repeatedly and read the remainders bottom to top. Hexadecimal groups binary in fours, so 1111 1111 = FF = 255.
Military Time Converter
To convert military time to standard time, subtract 12 from any hour above 12 and add PM: 1300 is 1:00 PM and 2200 is 10:00 PM. Hours 0100 to 1159 are AM, 1200 is noon and 0000 is midnight (12:00 AM). To go the other way, add 12 to PM hours from 1 PM to 11 PM.