MoreThanACalculators
Converters
Browse all conversion tools in one place — from units, time, and data to cooking, electronics, travel, and more. Use search to find the exact converter in seconds.
Tip: Try “converter”, “to”, “kWh”, “mm”, “mph”, “EV”, “torque”, or “temperature”.
Numbers & Text Converters
Convert numeral systems and transform text formats quickly.
Roman Numeral Converter
Convert numbers to Roman numerals and back.
Scientific Notation Converter
Convert between standard and scientific notation.
Exponential Form Converter
Convert numbers between decimal and exponential form.
Decimal to Percentage
Convert decimals and fractions to percentages.
Fraction to Decimal
Convert fractions to decimals and decimals to fractions.
Decimal to Octal
Convert decimal numbers into octal.
Hex to Binary
Convert hexadecimal to binary and decimal.
Binary to Decimal
Convert binary to decimal and hexadecimal.
Uppercase to Lowercase
Change any text to lowercase.
Lowercase to Uppercase
Change any text to uppercase.
Unix Timestamp Converter
Convert Unix timestamps to dates and back.
Time & Date Converters
Convert time units and durations for planning, schedules, and tracking.
Food & Cooking Converters
Convert kitchen units, temperatures, and ingredient measurements.
Ounces to Cups
Quick volume conversion for recipes.
Drops to mL
Drops to millilitres for any dropper's drop factor.
Cooking Temperature
Convert oven temps between °C and °F.
Ingredient Substitution
Swap ingredients with practical equivalents.
Baking Pan Size
Convert pan sizes and adjust recipes.
Ingredient Weight ↔ Volume
Grams and ounces to cups and spoons for common ingredients.
Mesh to Micron
Convert mesh size to microns.
Home & DIY Converters
Conversions for building, materials, and measurements.
Inches to Fraction
Decimal inches to the nearest tape-measure fraction.
Paint Coverage
Convert paint coverage units for planning.
Tile Size to Area
Convert tile size into coverage area.
Lumber Size
Convert nominal to actual lumber sizes.
Roofing Slope
Convert roof pitch and slope formats.
Concrete Mix Ratio
Convert common concrete mix ratios.
Concrete Slump Conversion
Convert concrete slump between inches and millimetres.
Auto & Travel Converters
Speed, distance, fuel, tires, and EV-related conversions.
Speed Converter
Convert km/h, mph, m/s, knots and ft/s.
Knots to MPH
Convert knots to miles per hour and back.
Nautical Mile to KM
Convert nautical miles to kilometers.
Fuel Efficiency
Convert fuel efficiency between US, UK and metric units.
Fuel Economy
Convert MPG, km/L and L/100 km.
Tire Pressure
Convert PSI, bar, kPa, and more.
EV Charging kWh → Miles Range
Estimate range from energy added.
Horsepower to PS
Convert HP to metric PS.
In-lb to ft-lb Torque
Convert torque between inch-pounds, foot-pounds and newton-metres.
Science & Engineering Converters
Common physical units across energy, pressure, flow, density, and more.
Energy Converter
Convert joules, calories, kWh, BTU, and more.
Power Converter
Convert watts, kW, hp, and more.
Pressure Unit Converter
Convert PSI, bar, Pa, kPa, atm.
Volume Converter
Convert liters, gallons, cups, and more.
Flow Rate Converter
Convert L/s, m³/h, gallons per minute and CFM.
Density Converter
Convert kg/m³, g/cm³, lb/ft³ and other density units.
Viscosity Converter
Convert dynamic and kinematic viscosity units.
Frequency Converter
Convert hertz, kilohertz, megahertz, gigahertz and rpm.
Torque Unit Converter
Convert torque between common units.
Temperature Gradient
Convert °C/m, °C/km, K/m and °F/ft.
Work to Energy
Convert joules, calories, kWh and foot-pounds.
Light Year Conversion
Convert light years into other distance units.
Decimeter to Meter
Convert decimetres to metres and back.
Ares to Hectares
Convert land area between ares and hectares.
Liters to Centiliters
Convert litres to centilitres and back.
Kg to Gallons
Convert kilograms to gallons (with density assumptions).
Gallons to Pounds
Convert gallons to pounds (with density assumptions).
Electronics Converters
Quick converters used in electronics and electrical work.
dBm to mW
Convert RF power between dBm and milliwatts.
dB to Ratio
Convert decibels to voltage or power ratios and back.
Impedance Converter
Convert impedance between ohms, rectangular and polar forms.
Inductance Unit Converter
Convert henries, millihenries, microhenries and nanohenries.
Capacitance Unit Converter
Convert farads, microfarads, nanofarads and picofarads.
Solar Watts to Amps
Panel current from rated watts and system voltage.
Electrical Conductivity
Convert siemens per metre and related conductivity units.
Resistivity Converter
Convert resistivity between ohm-metre and other units.
Health & Medical Converters
Converters used for lab values and common health metrics.
Blood Sugar Converter
Convert glucose units (mg/dL ↔ mmol/L).
Cholesterol Converter
Convert cholesterol between mg/dL and mmol/L.
Creatinine Unit Converter
Convert creatinine between mg/dL and µmol/L.
HbA1c to eAG
Convert HbA1c to estimated average glucose.
BMI Percentile Converter
BMI percentile for children and teens from CDC data.
Radiation Dose Converter
Convert sieverts, rem, grays and rads.
Popular Converters
These are common starting points for most visitors.
Converters FAQ
Quick answers to common conversion questions.
What is the best way to use a unit converter?
Choose the converter closest to your input (e.g., speed, pressure, volume), enter your value, and select the units you want to convert from and to. Double-check assumptions for special cases like “kg to gallons”.
Why do some converters need assumptions?
Conversions like mass ↔ volume depend on density (for example, kg to gallons). The tool uses typical assumptions, and you can adjust if needed.
Are converters accurate?
Yes for pure unit math. Accuracy depends on rounding, constants, and assumptions (density, standards, or measurement definitions).
Which converters are most popular?
Time, speed, pressure, volume, energy, and health unit converters (like blood sugar) are usually the most used.
Can I use these converters for school and engineering?
Yes — the science and engineering section includes common unit conversions used in physics, HVAC, electronics, and lab work.
More unit converters calculators
Further tools in this category that were not listed above.
Nm to Joules Calculator
Convert newton-metres of torque to joules of energy.
Grams to Ounces Calculator
Convert grams to ounces and pounds.
CCF to Gallons Conversion
Convert water meter CCF readings to gallons.
Gauge to mm Converter
Convert wire and sheet metal gauge to millimetres.
Grain to Gram Converter
Convert grains to grams for ammunition and pharmacy.
Horsepower to BTU Hr Converter
Convert horsepower to BTU per hour and back.
Shutter Speed Converter
Convert shutter speed fractions to seconds and stops.
Aperture to Exposure Converter
Shutter speed or aperture for a given EV and ISO.
Screen Size Converter
Screen width and height from diagonal and aspect ratio.
Pixel to Inches Converter
Physical size of a pixel dimension at a given DPI.
Kinetic Energy to Velocity Converter
Speed of a body from its kinetic energy and mass.
Height Converter
Convert height between feet-inches and centimetres.
Data Rate Converter
Convert Mbps, MB/s, Gbps and other data rates.
Angle Converter
Convert degrees, radians, gradians and turns.
Coordinate Converter
Convert coordinates between decimal degrees and DMS.
Acceleration Converter
Convert m/s², g, ft/s² and other acceleration units.
Thermal Conductivity Converter
Convert W/m·K and BTU·in/h·ft²·°F.
Heat Flux Converter
Convert W/m², BTU/h·ft² and other heat flux units.
Pace to Speed Converter
Convert running pace per km or mile into speed.
Weight Converter
Convert kilograms, pounds, stones, ounces and grams.
Area Converter
Convert square metres, feet, acres and hectares.
Temperature Converter
Convert Celsius, Fahrenheit and Kelvin.
Unit Converter
Length, weight, volume, temperature and more in one tool.
Weight Loss Percentage Calculator
Percentage of body weight lost between two weigh-ins.
Time Zone Converter
Convert a time between two time zones.