Convert any unit, precisely.
Exact factors, answers as you type, nothing to install.
Signature tools
Type a height the way you would say it (5′7″, 5 ft 7 in, 170 cm or 1.70 m) and read it in feet and inches down to 1/16 in, on a ruler, next to a second height.
170 cm = 5′7″5 ft 6.93 in exactlyDigital storageBytes: decimal vs binaryWhy a 1 TB drive shows up as 931.32 GB in Windows: KB against KiB at every step, as exact byte counts, with the IEC definitions they come from.
1 TB = 931.32 GiB1,000 KB = 1 MB1,024 KiB = 1 MiBMeasurement categories
Distance and length
Weight and mass
Temperature scales
Volume and capacity
Surface area
Speed and velocity
Time and duration
Data and storage
Pressure and stress
Energy and work
Power output
Font sizes for screen and print
Popular conversions
Decimal amounts, worked out
Most converters only chart whole numbers, so the awkward amounts are the ones you end up doing by hand. These pages carry a full decimal table (0.38 lb, 0.02 m, 0.5 acre and the rest), the reverse direction, where the factor actually comes from, and the unit mix-ups worth knowing about.
The conversions people get wrong
Some pairs hide a genuine ambiguity, and the number a converter gives you is only half the answer. These pages explain the trap, with the exact factors and the sources they come from.
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