Conversion Tools
Free unit and currency converters — length, weight, volume, temperature, time and 150+ world currencies, with exact conversion factors shown for every result.
The converters use internationally standardized factors (SI and NIST tables), so results match what engineering and cooking references print. Currency rates refresh daily from market data. Common cases: recipe conversions between cups and millilitres, travel temperature checks, sizing lumber or fabric from metric plans, and currency budgeting before a trip.
Unit Converter
Convert various units of measurement.
Volume Converter
Convert between volume units.
Length Converter
Convert between length units.
Weight Converter
Convert between weight units.
Temperature Converter
Convert Celsius, Fahrenheit, Kelvin.
Currency Converter
Convert between global currencies.
Time Converter
Convert between time units.
How to use these calculators
Concrete walkthroughs with real numbers — open the tool, follow the steps.
Cooking conversions that stay exact
1 US cup = 236.6 ml. Convert cups → millilitres with the Volume Converter for baking precision — rounding at 4 significant digits keeps recipes within tasting difference.
Temperature without the formula
°C → °F is ×9/5 + 32; the Temperature Converter applies it both ways plus Kelvin. Reference points: 0 °C freezes, 37 °C is body temperature, 180 °C is a standard oven (356 °F).
Budget a trip in the right currency
The Currency Converter uses daily market rates. Convert your daily budget once, then add a 2–3% buffer for card exchange spreads — the mid-market rate you see is not exactly what your bank charges.