All Unit Conversion Pages
Browse every unit conversion available. Convert between length, weight, temperature, area, volume, speed, and more.
Common Use Cases for Unit Conversion
Cooking & Recipes
International recipes mix metric and imperial — converting cups to milliliters, ounces to grams, and Fahrenheit to Celsius is a daily task for anyone following recipes from different countries.
Fitness & Health
Gym equipment in the US shows pounds, but international standards use kilograms. Runners convert between miles and kilometers for race training. Nutritionists convert between ounces and grams for meal planning.
Travel & Navigation
Driving in Europe means converting miles to kilometers for speed limits. Fuel is sold in liters, not gallons. Temperatures are in Celsius. Quick, accurate conversions prevent costly mistakes abroad.
Engineering & Construction
Blueprints may use inches, centimeters, or millimeters depending on origin. Area calculations shift between square feet and square meters. Material quantities convert between cubic yards and cubic meters.
Most Common Conversion Pairs
Quick reference for frequently used unit conversions with their exact multipliers.
| From | To | Multiply By | Category |
|---|---|---|---|
| Inches | Centimeters | 2.54 | Length |
| Miles | Kilometers | 1.60934 | Length |
| Pounds | Kilograms | 0.45359 | Weight |
| Ounces | Grams | 28.3495 | Weight |
| Gallons (US) | Liters | 3.78541 | Volume |
| Fluid Ounces | Milliliters | 29.5735 | Volume |
| Square Feet | Square Meters | 0.0929 | Area |
| Acres | Hectares | 0.40469 | Area |
| °F | °C | (°F − 32) × 5/9 | Temperature |
| MPH | km/h | 1.60934 | Speed |
Frequently Asked Questions
- How do I convert Fahrenheit to Celsius?
- Subtract 32 from the Fahrenheit value, then multiply by 5/9. For example, 72°F = (72 − 32) × 5/9 = 22.2°C. For a quick estimate, subtract 30 and divide by 2 — it's not exact but works for everyday use.
- How many grams are in an ounce?
- One ounce equals 28.3495 grams. For cooking, rounding to 28 grams per ounce is accurate enough. For precious metals, the troy ounce (31.1035 grams) is used instead of the standard avoirdupois ounce.
- What is the difference between a US gallon and an imperial gallon?
- A US gallon is 3.785 liters while an imperial (UK) gallon is 4.546 liters — about 20% larger. This matters when following British vs American recipes or comparing fuel economy between US and UK vehicles.
- How many centimeters are in an inch?
- One inch equals exactly 2.54 centimeters. This is an exact definition, not an approximation. To convert inches to centimeters, multiply by 2.54. To go the other way, divide centimeters by 2.54.
Categories
Length Conversions (30)
Meter to KilometerMeter to CentimeterMeter to MillimeterMeter to InchMeter to FootMeter to YardMeter to MileKilometer to MeterKilometer to CentimeterKilometer to MillimeterKilometer to InchKilometer to FootKilometer to YardKilometer to MileCentimeter to MeterCentimeter to KilometerCentimeter to MillimeterCentimeter to InchCentimeter to FootCentimeter to YardCentimeter to MileMillimeter to MeterMillimeter to KilometerMillimeter to CentimeterMillimeter to InchMillimeter to FootMillimeter to YardMillimeter to MileInch to MeterInch to Kilometer
Weight Conversions (20)
Gram to KilogramGram to PoundGram to OunceGram to Metric TonneKilogram to GramKilogram to PoundKilogram to OunceKilogram to Metric TonnePound to GramPound to KilogramPound to OuncePound to Metric TonneOunce to GramOunce to KilogramOunce to PoundOunce to Metric TonneMetric Tonne to GramMetric Tonne to KilogramMetric Tonne to PoundMetric Tonne to Ounce
Temperature Conversions (6)
Area Conversions (30)
Square Meter to Square FootSquare Meter to AcreSquare Meter to HectareSquare Meter to Square KilometerSquare Meter to Square YardSquare Foot to Square MeterSquare Foot to AcreSquare Foot to HectareSquare Foot to Square KilometerSquare Foot to Square YardAcre to Square MeterAcre to Square FootAcre to HectareAcre to Square KilometerAcre to Square YardHectare to Square MeterHectare to Square FootHectare to AcreHectare to Square KilometerHectare to Square YardSquare Kilometer to Square MeterSquare Kilometer to Square FootSquare Kilometer to AcreSquare Kilometer to HectareSquare Kilometer to Square YardSquare Yard to Square MeterSquare Yard to Square FootSquare Yard to AcreSquare Yard to HectareSquare Yard to Square Kilometer
Volume Conversions (30)
Liter to MilliliterLiter to US GallonLiter to US CupLiter to US PintLiter to Fluid OunceMilliliter to LiterMilliliter to US GallonMilliliter to US CupMilliliter to US PintMilliliter to Fluid OunceUS Gallon to LiterUS Gallon to MilliliterUS Gallon to US CupUS Gallon to US PintUS Gallon to Fluid OunceUS Cup to LiterUS Cup to MilliliterUS Cup to US GallonUS Cup to US PintUS Cup to Fluid OunceUS Pint to LiterUS Pint to MilliliterUS Pint to US GallonUS Pint to US CupUS Pint to Fluid OunceFluid Ounce to LiterFluid Ounce to MilliliterFluid Ounce to US GallonFluid Ounce to US CupFluid Ounce to US Pint
Speed Conversions (12)
Meters per Second to Kilometers per HourMeters per Second to Miles per HourMeters per Second to KnotKilometers per Hour to Meters per SecondKilometers per Hour to Miles per HourKilometers per Hour to KnotMiles per Hour to Meters per SecondMiles per Hour to Kilometers per HourMiles per Hour to KnotKnot to Meters per SecondKnot to Kilometers per HourKnot to Miles per Hour