Free Online Converters
Convert units, number systems, data sizes and time zones using exact standard definitions — including local units like marla, kanal and tola.
Length Converter
Convert metres, feet, inches, kilometres, miles and more.
Weight Converter
Convert kilograms, pounds, ounces, grams and tolas.
Temperature Converter
Convert Celsius, Fahrenheit and Kelvin.
Area Converter
Convert square feet, square metres, acres, marla and kanal.
Volume Converter
Convert litres, millilitres, gallons, cups and cubic units.
Speed Converter
Convert km/h, mph, m/s and knots.
Data Storage Converter
Convert bits, bytes, KB, MB, GB, TB in decimal or binary units.
MB to GB Converter
Convert megabytes to gigabytes (1000 or 1024 based).
GB to MB Converter
Convert gigabytes to megabytes (1000 or 1024 based).
KB to MB Converter
Convert kilobytes to megabytes (1000 or 1024 based).
Bytes Converter
Convert a byte count into every common unit at once.
Time Zone Converter
Convert a time between time zones you choose, with DST handled.
Number to Words Converter
Spell out numbers in words in international or lakh/crore style.
Roman Numeral Converter
Convert numbers to Roman numerals and back.
Binary to Decimal
Convert binary numbers to decimal with step-by-step working.
Decimal to Binary
Convert decimal numbers to binary with the division method shown.
Hexadecimal Converter
Convert between hex, decimal, binary and octal.
RGB Color Converter
Mix colours with RGB sliders and convert to HEX, HSL and CMYK.
PX to REM Converter
Convert pixels to rem units for responsive CSS.
REM to PX Converter
Convert rem values back to pixels.
Exact conversions, clearly labelled
Converters use internationally defined factors (for example, 1 inch = 2.54 cm exactly and 1 pound = 0.45359237 kg exactly), and show a full table of equivalent units so you can see every conversion at once.
Local units
Pakistan and South Asia use traditional units such as marla, kanal, tola and maund. Their sizes are not identical everywhere — a marla is 272.25 sq ft in traditional revenue records but 225 sq ft in many housing societies. The Area Converter lists both so you can match the definition in your documents.
Decimal vs binary data sizes
Storage makers use 1 GB = 1,000 MB, while Windows calculates 1 GB as 1,024 MB. The Data Storage Converter shows both, explaining why a new drive looks “smaller” than advertised.
Guides for converter tools
All guidesConverter Tools FAQ
Are conversion factors exact?
Yes, where an exact definition exists. Some units (traditional marla, tola, Mach) have commonly accepted values that we label clearly.
Does the time zone converter handle daylight saving?
Yes. It uses the time zone database built into your browser, which includes daylight saving rules for each region.
Why do binary and decimal results differ?
Decimal units are powers of 1,000 and binary units powers of 1,024. The difference grows with size: about 7% for gigabytes and 10% for terabytes.
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