A practical workflow
Choose the exact unit pair, enter a value, set display precision, then use the formula and common-value table to verify the result.
Unit Converters
Use a focused pair converter for a common search task, then compare the same value in every unit in that category. Formulas, examples and tables are included for each page.
🔒 Processing happens locally in your browser. Files and entered values are not uploaded.
Tools in this toolkit
61 tools Unit Converter Convert length, weight, temperature, speed, area, volume, data storage, time, pressure, energy, power and angle units instantly in your browser. inches to centimeters Convert Inch (in) to Centimeter (cm) with a precise browser calculator. See the formula, examples and a common values table locally. centimeters to inches Convert Centimeter (cm) to Inch (in) with a precise browser calculator. See the formula, examples and a common values table locally. millimeters to inches Convert Millimeter (mm) to Inch (in) with a precise browser calculator. See the formula, examples and a common values table locally. inches to millimeters Convert Inch (in) to Millimeter (mm) with a precise browser calculator. See the formula, examples and a common values table locally. feet to meters Convert Foot (ft) to Meter (m) with a precise browser calculator. See the formula, examples and a common values table locally. meters to feet Convert Meter (m) to Foot (ft) with a precise browser calculator. See the formula, examples and a common values table locally. kilometers to miles Convert Kilometer (km) to Mile (mi) with a precise browser calculator. See the formula, examples and a common values table locally. miles to kilometers Convert Mile (mi) to Kilometer (km) with a precise browser calculator. See the formula, examples and a common values table locally. yards to meters Convert Yard (yd) to Meter (m) with a precise browser calculator. See the formula, examples and a common values table locally. meters to yards Convert Meter (m) to Yard (yd) with a precise browser calculator. See the formula, examples and a common values table locally. inches to feet Convert Inch (in) to Foot (ft) with a precise browser calculator. See the formula, examples and a common values table locally. feet to inches Convert Foot (ft) to Inch (in) with a precise browser calculator. See the formula, examples and a common values table locally. kilograms to pounds Convert Kilogram (kg) to Pound (lb) with a precise browser calculator. See the formula, examples and a common values table locally. pounds to kilograms Convert Pound (lb) to Kilogram (kg) with a precise browser calculator. See the formula, examples and a common values table locally. grams to ounces Convert Gram (g) to Ounce (oz) with a precise browser calculator. See the formula, examples and a common values table locally. ounces to grams Convert Ounce (oz) to Gram (g) with a precise browser calculator. See the formula, examples and a common values table locally. kilograms to stone Convert Kilogram (kg) to Stone (st) with a precise browser calculator. See the formula, examples and a common values table locally. stone to kilograms Convert Stone (st) to Kilogram (kg) with a precise browser calculator. See the formula, examples and a common values table locally. pounds to stone Convert Pound (lb) to Stone (st) with a precise browser calculator. See the formula, examples and a common values table locally. stone to pounds Convert Stone (st) to Pound (lb) with a precise browser calculator. See the formula, examples and a common values table locally. celsius to fahrenheit Convert Celsius (°C) to Fahrenheit (°F) with a precise browser calculator. See the formula, examples and a common values table locally. fahrenheit to celsius Convert Fahrenheit (°F) to Celsius (°C) with a precise browser calculator. See the formula, examples and a common values table locally. celsius to kelvin Convert Celsius (°C) to Kelvin (K) with a precise browser calculator. See the formula, examples and a common values table locally. kelvin to celsius Convert Kelvin (K) to Celsius (°C) with a precise browser calculator. See the formula, examples and a common values table locally. square-feet to square-meters Convert Square foot (ft²) to Square meter (m²) with a precise browser calculator. See the formula, examples and a common values table locally. square-meters to square-feet Convert Square meter (m²) to Square foot (ft²) with a precise browser calculator. See the formula, examples and a common values table locally. acres to square-feet Convert Acre (ac) to Square foot (ft²) with a precise browser calculator. See the formula, examples and a common values table locally. square-feet to acres Convert Square foot (ft²) to Acre (ac) with a precise browser calculator. See the formula, examples and a common values table locally. hectares to acres Convert Hectare (ha) to Acre (ac) with a precise browser calculator. See the formula, examples and a common values table locally. acres to hectares Convert Acre (ac) to Hectare (ha) with a precise browser calculator. See the formula, examples and a common values table locally. liters to gallons Convert Liter (l) to Gallon (US) with a precise browser calculator. See the formula, examples and a common values table locally. gallons to liters Convert Gallon (US) to Liter (l) with a precise browser calculator. See the formula, examples and a common values table locally. milliliters to cups Convert Milliliter (ml) to Cup (US) with a precise browser calculator. See the formula, examples and a common values table locally. cups to milliliters Convert Cup (US) to Milliliter (ml) with a precise browser calculator. See the formula, examples and a common values table locally. liters to quarts Convert Liter (l) to Quart (US) with a precise browser calculator. See the formula, examples and a common values table locally. quarts to liters Convert Quart (US) to Liter (l) with a precise browser calculator. See the formula, examples and a common values table locally. cups to gallons Convert Cup (US) to Gallon (US) with a precise browser calculator. See the formula, examples and a common values table locally. gallons to cups Convert Gallon (US) to Cup (US) with a precise browser calculator. See the formula, examples and a common values table locally. kilometers-per-hour to miles-per-hour Convert Kilometer/hour (km/h) to Mile/hour (mph) with a precise browser calculator. See the formula, examples and a common values table locally. miles-per-hour to kilometers-per-hour Convert Mile/hour (mph) to Kilometer/hour (km/h) with a precise browser calculator. See the formula, examples and a common values table locally. knots to miles-per-hour Convert Knot (kn) to Mile/hour (mph) with a precise browser calculator. See the formula, examples and a common values table locally. miles-per-hour to knots Convert Mile/hour (mph) to Knot (kn) with a precise browser calculator. See the formula, examples and a common values table locally. megabytes to gigabytes Convert Megabyte (MB) to Gigabyte (GB) with a precise browser calculator. See the formula, examples and a common values table locally. gigabytes to megabytes Convert Gigabyte (GB) to Megabyte (MB) with a precise browser calculator. See the formula, examples and a common values table locally. kilobytes to megabytes Convert Kilobyte (KB, 1000 B) to Megabyte (MB) with a precise browser calculator. See the formula, examples and a common values table locally. megabytes to kilobytes Convert Megabyte (MB) to Kilobyte (KB, 1000 B) with a precise browser calculator. See the formula, examples and a common values table locally. hours to minutes Convert Hour (h) to Minute (min) with a precise browser calculator. See the formula, examples and a common values table locally. minutes to hours Convert Minute (min) to Hour (h) with a precise browser calculator. See the formula, examples and a common values table locally. days to hours Convert Day (d) to Hour (h) with a precise browser calculator. See the formula, examples and a common values table locally. hours to days Convert Hour (h) to Day (d) with a precise browser calculator. See the formula, examples and a common values table locally. weeks to days Convert Week (wk) to Day (d) with a precise browser calculator. See the formula, examples and a common values table locally. days to weeks Convert Day (d) to Week (wk) with a precise browser calculator. See the formula, examples and a common values table locally. bar to psi Convert Bar (bar) to Pound per square inch (psi) with a precise browser calculator. See the formula, examples and a common values table locally. psi to bar Convert Pound per square inch (psi) to Bar (bar) with a precise browser calculator. See the formula, examples and a common values table locally. kilowatt-hours to kilojoules Convert Kilowatt-hour (kWh) to Kilojoule (kJ) with a precise browser calculator. See the formula, examples and a common values table locally. kilojoules to kilowatt-hours Convert Kilojoule (kJ) to Kilowatt-hour (kWh) with a precise browser calculator. See the formula, examples and a common values table locally. kilowatts to horsepower Convert Kilowatt (kW) to Horsepower (hp) with a precise browser calculator. See the formula, examples and a common values table locally. horsepower to kilowatts Convert Horsepower (hp) to Kilowatt (kW) with a precise browser calculator. See the formula, examples and a common values table locally. degrees to radians Convert Degree (°) to Radian (rad) with a precise browser calculator. See the formula, examples and a common values table locally. radians to degrees Convert Radian (rad) to Degree (°) with a precise browser calculator. See the formula, examples and a common values table locally.
When this toolkit helps
Useful for school, travel, construction estimates, recipes, data sizes and everyday comparisons across metric and US units.
Before you use the result
Display rounding does not change the internal calculation. Check unit definitions and required precision before safety-critical or regulated use.
Start with a focused tool
Open the general converter for several units, or choose a focused pair for a faster answer.
Practical guides
- Unit Conversion: Exact Definitions and Display Precision
Convert inches and pounds using their definitions, distinguish US gallons and binary data units, and keep rounding separate from measurement accuracy.
Private by design
Process files and create static codes on your device. No file uploads or account required.