Free online web browser based tools to assist with your engineering, scientific, education, business or everyday complex calculation tasks.
Unit Converters
A comprehensive set of unit conversion tools for converting measurement values into different engineering units.
- Acceleration Converter
- Amount Of Substance Converter
- Area Converter
- Area Density Converter
- Density Converter
- Depth Converter
- Distance Converter
- Energy Converter
- Force Converter
- Frequency Converter
- Heat Capacity Converter
- Height Converter
- Leak Rate Converter
- Length Converter
- Linear Mass Density Converter
- Mass Converter
- Mass Flow Rate Converter
- Molality Converter
- Molar Heat Capacity Converter
- Molar Mass Converter
- Molar Volume Converter
- Molarity Converter
- Power Converter
- Pressure Converter
- Specific Heat Capacity Converter
- Speed Converter
- Temperature Coefficient Converter
- Temperature Converter
- Temperature Difference Converter
- Time Period Converter
- Torque Converter
- Vehicle Fuel Consumption Converter
- Vehicle Fuel Economy Converter
- Volume Converter
- Volume Flow Rate Converter
- Volumetric Heat Capacity Converter
- Weight Converter
- Width Converter
Pressure
Tools for converting and calculating pressure.
- Absolute – Barometric to Gauge Pressure Calculator
- Dead Weight Tester Mass & Area to Pressure Calculator
- Elevation, Station (QFE) and Sea Level (QNH) Pressure Calculator
- Fluid Depth, Density, Gravity, and Pressure Calculator
- Force & Area to Pressure Calculator
- Gauge + Barometric to Absolute Pressure Calculator
- High and Low Side Pressure to Differential Pressure Calculator
- ICAO Standard Atmosphere Altitude and Pressure Calculator
- Liquid Level to Hydrostatic Pressure Calculator
- Piston Cylinder Force and Diameter to Pressure Calculator
- Pressure Converter
- Pressure Measurement Accuracy and Error Calculator
- Pressure Sensing Errors Calculator
- Pressure Sensor Calculator
- Pressure Sensor Calibration Error Calculator
- Pressure Sensor Output Calculator
- Suction Pressure to Vacuum Calculator
- US Standard Atmosphere Altitude and Pressure Calculator
- Vacuum to Suction Pressure Calculator
Liquid Level
Tools for converting and calculating liquid depth and level.
- Fluid Depth, Density, Gravity, and Pressure Calculator
- Horizontal Cylindrical Shaped Tank Contents Calculator
- Pressure to Liquid Level Calculator
- Rectangular Shaped Tank Contents Calculator
- Tank Height – Tank Level Depth to Tank Level Height Calculator
- Tank Height – Tank Level Height to Tank Level Depth Calculator
- Vertical Cylindrical Shaped Tank Contents Calculator
- Well Depth – Water Level Depth to Water Level Height Calculator
- Well Depth – Water Level Height to Water Level Depth Calculator
Temperature & Heat
Tools for calculating temperature and heat measurement parameters.
- Area Thermal Expansion Calculator
- Avogadro’s Law Calculator
- Boyle’s Law Calculator
- Charles’ Law Calculator
- Combined Gas Law Calculator
- Gay-Lussac’s Law Calculator
- Heat Capacity & Amount Of Substance to Molar Heat Capacity Calculator
- Heat Capacity & Temperature Change to Heat Calculator
- Heat Capacity & Total Mass to Specific Heat Capacity Calculator
- Heat Capacity & Total Volume to Volumetric Heat Capacity Calculator
- Heat Capacity Converter
- Heat Transferred & Heat Capacity to Temperature Change Calculator
- Heat Transferred & Temperature Change to Heat Capacity Calculator
- Ideal Gas Law Calculator
- Length, Area and Volume Isotropic Thermal Expansion Calculator
- Linear Thermal Expansion Calculator
- Molar Heat Capacity & Amount Of Substance to Heat Capacity Calculator
- Molar Heat Capacity Converter
- Specific Heat Capacity & Total Mass to Heat Capacity Calculator
- Specific Heat Capacity Calculator
- Specific Heat Capacity Converter
- Temperature Coefficient Converter
- Temperature Converter
- Temperature Difference Calculator
- Temperature Difference Converter
- Temperature, TCR Coefficient and Electrical Resistance Change Calculator
- Volumetric Heat Capacity & Total Volume to Heat Capacity Calculator
- Volumetric Heat Capacity Converter
- Volumetric Thermal Expansion Calculator
Electrical & Electromagnetic
Tools for calculating electrical or electromagnetic measurement parameters.
- Current & Electrical Resistance to DC Power Calculator
- Current & Electrical Resistance to DC Voltage Calculator
- Distance to Time Delay Calculator for Electromagnetic Waves in a Vacuum
- Frequency to Photon Energy Calculator for Electromagnetic Waves
- Frequency to Wavelength Calculator for Electromagnetic Waves in a Vacuum
- Photon Energy to Frequency Calculator for Electromagnetic Waves
- Photon Energy to Wavelength Calculator for Electromagnetic Waves in a Vacuum
- Power & Current to DC Electrical Resistance Calculator
- Power & Current to DC Voltage Calculator
- Power & Electrical Resistance to DC Current Calculator
- Power & Electrical Resistance to DC Voltage Calculator
- Power & Voltage to DC Current Calculator
- Temperature, TCR Coefficient and Electrical Resistance Change Calculator
- Time Delay to Distance Calculator for Electromagnetic Waves in a Vacuum
- Voltage & Current to DC Electrical Resistance Calculator
- Voltage & Current to DC Power Calculator
- Voltage & Electrical Resistance to DC Current Calculator
- Voltage & Electrical Resistance to DC Power Calculator
- Voltage & Power to DC Electrical Resistance Calculator
- Wavelength to Frequency Calculator for Electromagnetic Waves in a Vacuum
- Wavelength to Photon Energy Calculator for Electromagnetic Waves in a Vacuum
Flow
Tools for converting and calculating flow rates.
- Flow Velocity & Area to Flow Rate Calculator
- Flow Velocity & Pipe Diameter to Volumetric Flow Rate Calculator
- Flow Velocity & Rectangular Duct Width x Height to Volumetric Flow Rate Calculator
- Leak Rate Calculator
- Leak Rate Converter
- Mass Flow & Density to Volume Flow Calculator
- Mass Flow Rate Converter
- Total Mass & Total Time to Flow Rate Calculator
- Total Volume & Total Time to Flow Rate Calculator
- Volume Flow & Area to Flow Velocity Calculator
- Volume Flow & Density to Mass Flow Calculator
- Volume Flow Rate Converter
- Volumetric Flow Rate & Pipe Diameter to Flow Speed Calculator
- Volumetric Flow Rate & Rectangular Duct Width x Height to Flow Velocity Calculator
Force, Load & Torque
Tools for converting and calculating force, load or torque.
- Calculate Torque from Force & Lever Arm Length
- Force & Area to Force per Unit Area Calculator
- Force Converter
- Force per Unit Area Converter
- Mass & Acceleration to Force Calculator
- Mass to Weight Calculator
- Newton’s Universal Gravitation Calculator
- Piston Cylinder Pressure and Diameter to Force Calculator
- Power & Velocity to Force Calculator
- Pressure & Area to Force Calculator
- Push Pull Hydraulic Cylinder Pressure, Diameter and Force Calculator
- Torque Converter
- Two Connected Hydraulic Cylinders Force, Diameter and Displacement Calculator
- Work Done & Distance Moved to Applied Force Calculator
Mass & Weight
Tools for converting and calculating mass or weight.
- Area Total and Area Density to Total Mass Calculator
- Dead Weight Tester Pressure & Area to Mass Calculator
- Delivery Service Volumetric Weight Calculator
- Force & Acceleration to Mass Calculator
- Gross – Net to Tare Weight Calculator
- Gross – Tare to Net Weight Calculator
- Kinetic Energy & Velocity to Mass Calculator
- Length Total and Linear Density to Total Mass Calculator
- Length x Width and Area Density to Total Mass Calculator
- Mass Converter
- Molality Converter
- Molar Mass Converter
- Net + Tare to Gross Weight Calculator
- Pounds and Ounces (lb oz) to Single Unit Weight Converter
- Single Unit Weight to Pounds and Ounces (lb oz) Converter
- Single Unit Weight to Stones and Pounds (st lb) Converter
- Stones and Pounds (st lb) to Single Unit Weight Converter
- Total Time & Flow Rate to Total Mass Calculator
- Volume & Density to Mass Calculator
- Weight Converter
- Weight to Mass Calculator
Length & Distance
Tools for converting and calculating length, width, height, depth or distance.
- Area to Length or Width Calculator
- Depth Converter
- Distance Converter
- Elevation, Station (QFE) and Sea Level (QNH) Pressure Calculator
- Estimate Travel Distance from Time taken & Average Speed
- Feet and Inches (ft in, ′ ″) to Single Unit Height Converter
- Feet and Inches (ft in, ′ ″) to Single Unit Length Converter
- Feet and Inches (ft in, ′ ″) to Single Unit Width Converter
- Height Converter
- ICAO Standard Atmosphere Altitude and Pressure Calculator
- Length Converter
- Length, Area and Volume Isotropic Thermal Expansion Calculator
- Linear Thermal Expansion Calculator
- Mass Total and Linear Density to Total Length Calculator
- Single Unit Height to Feet and Inches (ft in, ′ ″) Converter
- Single Unit Length to Feet and Inches (ft in, ′ ″) Converter
- Single Unit Width to Feet and Inches (ft in, ′ ″) Converter
- US Standard Atmosphere Altitude and Pressure Calculator
- Volume & Diameter to Length of Cylinder Calculator
- Volume to Length, Width or Height Calculator
- Width Converter
Diameter & Radius
Tools for converting and calculating the diameter or radius of circular shaped objects and spaces.
- Area to Diameter of Circle Calculator
- Area to Radius of Circle Calculator
- Circumference to Diameter of Circle Calculator
- Circumference to Radius of Circle Calculator
- Diameter to Radius of Circle Calculator
- Piston Cylinder Force and Pressure to Diameter Calculator
- Radius to Diameter of Circle Calculator
- Surface Area to Diameter of Sphere Calculator
- Surface Area to Radius of Sphere Calculator
- Volume & Length to Diameter of Cylinder Calculator
- Volume to Diameter of Sphere Calculator
- Volume to Radius of Sphere Calculator
- Volumetric Flow Rate & Flow Speed to Pipe Diameter Calculator
Area
Tools for converting and calculating the area of objects, spaces or cross-sections.
- Area Converter
- Area Thermal Expansion Calculator
- Diameter to Area of Circle Calculator
- Diameter to Surface Area of Sphere Calculator
- Force & Pressure to Area Calculator
- Length & Width to Area Calculator
- Length, Area and Volume Isotropic Thermal Expansion Calculator
- Mass Total and Area Density to Total Area Calculator
- Radius to Area of Circle Calculator
- Radius to Surface Area of Sphere Calculator
- Room Floor, Walls and Ceiling Area Calculator
- Volume Flow & Speed to Area Calculator
Volumetric
Tools for converting and calculating the volume of a 3D space, object or substance.
- Delivery Service Volumetric Weight Calculator
- Diameter to Volume of Sphere Calculator
- Horizontal Cylindrical Shaped Tank Contents Calculator
- Length & Diameter to Volume of Cylinder Calculator
- Length, Area and Volume Isotropic Thermal Expansion Calculator
- Length, Width & Height to Volume Calculator
- Mass & Density to Volume Calculator
- Molar Volume Converter
- Molarity Converter
- Radius to Volume of Sphere Calculator
- Rectangular Shaped Tank Contents Calculator
- Total Time & Flow Rate to Total Volume Calculator
- Vertical Cylindrical Shaped Tank Contents Calculator
- Volume Converter
- Volumetric Thermal Expansion Calculator
Density
Tools for converting and calculating density.
Time & Frequency
Tools for converting and calculating time or frequency.
- Distance to Time Delay Calculator for Electromagnetic Waves in a Vacuum
- Estimate Travel Time from Distance & Average Speed
- Frequency Converter
- Frequency to Period Calculator
- Land Area & Machine Width & Speed to Coverage Time Calculator
- Period to Frequency Calculator
- Photon Energy to Frequency Calculator for Electromagnetic Waves
- Time Period Converter
- Time Period in Single and Multiple Units Calculator
- Total Mass & Flow Rate to Total Time Calculator
- Total Volume & Flow Rate to Total Time Calculator
- Wavelength to Frequency Calculator for Electromagnetic Waves in a Vacuum
- Work Done & Power Output to Time Taken Calculator
Speed & Acceleration
Tools for converting and calculating speed or acceleration.
Energy & Power
Tools for converting and calculating energy and power.
- Battery Energy Used & Distance Travelled to Electric Vehicle Consumption Calculator
- Einstein’s Mass-Energy Equivalence Calculator
- Energy Converter
- Force & Velocity to Power Calculator
- Force Applied & Distance Moved to Work Done Calculator
- Frequency to Photon Energy Calculator for Electromagnetic Waves
- Mass & Velocity to Kinetic Energy Calculator
- Power & Elapsed Time to Work Done Calculator
- Power Converter
- Total Distance & Electric Vehicle Consumption to Estimated Total Battery Energy Usage Calculator
- Total Distance & Electric Vehicle Economy to Estimated Total Battery Energy Usage Calculator
- Wavelength to Photon Energy Calculator for Electromagnetic Waves in a Vacuum
- Work Done & Distance Moved to Applied Force Calculator
- Work Done & Elapsed Time to Power Calculator
Sensors & Instrumentation
Tools for converting and calculating input and output signal values of sensor and instrumentation devices.
- 0-10V Signal to Measurement Reading Converter
- 0-20mA Signal to Measurement Reading Converter
- 0-5V Signal to Measurement Reading Converter
- 0.5-4.5V Signal to Measurement Reading Converter
- 1-5V Signal to Measurement Reading Converter
- 4 to 20 mA Supply, Load, Shunt and Signal Calculator
- 4-20mA Signal to Measurement Reading Converter
- Bit to Measurement Resolution Converter
- Calibration Error Calculator
- Convert Linear Input to Square Root Extraction Output
- Convert Square Root Extraction Input to Linear Output
- Dead Weight Tester Mass & Area to Pressure Calculator
- Dead Weight Tester Pressure & Area to Mass Calculator
- DP Flow Transmitter Output Calculator
- Flow Transmitter 4-20mA Current Output Calculator
- Input to Output Measurement Reading Converter
- Liquid Level Transmitter 4-20mA Current Output Calculator
- Load Cell Millivolt (mV) Output Calculator
- Measurement Reading to 0-10V Signal Converter
- Measurement Reading to 0-20mA Signal Converter
- Measurement Reading to 0-5V Signal Converter
- Measurement Reading to 0.5-4.5V Signal Converter
- Measurement Reading to 1-5V Signal Converter
- Measurement Reading to 4-20mA Signal Converter
- Measurement Reading to SqRt Extraction 4-20mA Signal Converter
- Measurement to Digital Reading Converter
- Measurement to Ratiometric mV/V Signal Converter
- Measurement to Ratiometric V/V Signal Converter
- Pressure Measurement Accuracy and Error Calculator
- Pressure Sensing Errors Calculator
- Pressure Sensor Calculator
- Pressure Sensor Calibration Error Calculator
- Pressure Sensor Output Calculator
- Pressure Transducer 0-10V Voltage Output Calculator
- Pressure Transducer 0-5V Voltage Output Calculator
- Pressure Transducer 0.5-4.5V Voltage Output Calculator
- Pressure Transducer 1-5V Voltage Output Calculator
- Pressure Transducer Millivolt (mV) Output Calculator
- Pressure Transmitter 0-20mA Current Output Calculator
- Pressure Transmitter 4-20mA Current Output Calculator
- Ratiometric mV/V Signal to Measurement Converter
- Ratiometric V/V Signal to Measurement Converter
- SqRt Extraction 4-20mA Signal to Measurement Reading Converter
- Strain Gauge Transducer Millivolt (mV) Output Calculator
- Temperature Transmitter 4-20mA Current Output Calculator
- Torque Transducer Millivolt (mV) Output Calculator
Circular Shapes
Tools for converting and calculating radius, diameter, circumference, area and volume of circular, spherical and cylindrical shaped objects and spaces.
- Area to Diameter of Circle Calculator
- Area to Radius of Circle Calculator
- Box and Cylinder Dimensions with Same Volume Calculator
- Box and Sphere Dimensions with Same Volume Calculator
- Circumference to Diameter of Circle Calculator
- Circumference to Radius of Circle Calculator
- Cylinder and Sphere Dimensions with Same Volume Calculator
- Diameter to Area of Circle Calculator
- Diameter to Circumference of Circle Calculator
- Diameter to Radius of Circle Calculator
- Diameter to Surface Area of Sphere Calculator
- Diameter to Volume of Sphere Calculator
- Horizontal Cylindrical Shaped Tank Contents Calculator
- Length & Diameter to Volume of Cylinder Calculator
- Piston Cylinder Force and Pressure to Diameter Calculator
- Radius to Area of Circle Calculator
- Radius to Circumference of Circle Calculator
- Radius to Diameter of Circle Calculator
- Radius to Surface Area of Sphere Calculator
- Radius to Volume of Sphere Calculator
- Surface Area to Diameter of Sphere Calculator
- Surface Area to Radius of Sphere Calculator
- Two Cylinders Dimensions with Equal Volume Calculator
- Vertical Cylindrical Shaped Tank Contents Calculator
- Volume & Diameter to Length of Cylinder Calculator
- Volume & Length to Diameter of Cylinder Calculator
- Volume to Diameter of Sphere Calculator
- Volume to Radius of Sphere Calculator
Rectangular Shapes
Tools for converting and calculating length, width, height, area and volume of 2 and 3 dimensional rectangular shaped objects and spaces.
- Area to Length or Width Calculator
- Box and Cylinder Dimensions with Same Volume Calculator
- Box and Sphere Dimensions with Same Volume Calculator
- Delivery Service Volumetric Weight Calculator
- Length & Width to Area Calculator
- Length, Width & Height to Volume Calculator
- Rectangular Shaped Tank Contents Calculator
- Two Boxes Dimensions with Equal Volume Calculator
- Volume to Length, Width or Height Calculator
Movement & Motion
Tools for converting and calculating parameters associated with the movement and motion of physical objects.
- Acceleration Converter
- Force & Acceleration to Mass Calculator
- Force & Mass to Acceleration Calculator
- Force & Velocity to Power Calculator
- Force Applied & Distance Moved to Work Done Calculator
- Kinetic Energy & Mass to Velocity Calculator
- Kinetic Energy & Velocity to Mass Calculator
- Mass & Acceleration to Force Calculator
- Mass & Velocity to Kinetic Energy Calculator
- Power & Elapsed Time to Work Done Calculator
- Power & Force to Velocity Calculator
- Power & Velocity to Force Calculator
- Speed Converter
- Work Done & Applied Force to Distance Moved Calculator
- Work Done & Distance Moved to Applied Force Calculator
- Work Done & Elapsed Time to Power Calculator
- Work Done & Power Output to Time Taken Calculator
Travel & Transportation
Tools for converting and calculating parameters associated with travel and transportation performance, such as fuel economy, journey times or distances.
- Battery Energy & Electric Vehicle Consumption to Distance Range Calculator
- Battery Energy & Electric Vehicle Economy to Distance Range Calculator
- Calculate Average Speed from Distance & Time Taken
- Distance Travelled & Battery Energy Used to Electric Vehicle Economy Calculator
- Distance Travelled & Fuel Volume Used to Fuel Economy Calculator
- Elevation, Station (QFE) and Sea Level (QNH) Pressure Calculator
- Estimate Travel Distance from Time taken & Average Speed
- Estimate Travel Time from Distance & Average Speed
- Fuel Volume & Motor Vehicle Fuel Economy to Distance Range Calculator
- Fuel Volume Used & Distance Travelled to Motor Vehicle Fuel Consumption Calculator
- ICAO Standard Atmosphere Altitude and Pressure Calculator
- Speed Converter
- Total Distance & Motor Vehicle Fuel Consumption to Estimated Total Fuel Required Calculator
- Total Distance & Motor Vehicle Fuel Economy to Estimated Total Fuel Required Calculator
- Total Fuel Volume & Motor Vehicle Fuel Consumption to Distance Range Calculator
- US Standard Atmosphere Altitude and Pressure Calculator
- Vehicle Fuel Consumption Converter
- Vehicle Fuel Consumption to Economy Calculator
- Vehicle Fuel Economy Converter
- Vehicle Fuel Economy to Consumption Calculator
Pricing & Quantities
Tools for converting and calculating prices and quantities for material, product, time or space.
- Area total and Amount per unit area to Amount total Calculator
- Cost and Markup to Selling Price Calculator
- Cost and Profit Margin to Selling Price Calculator
- Gross Price and % Tax Rate to Net Price Calculator
- Item Price and Quantity to Total Price Calculator
- Length total and Amount per unit length to Amount total Calculator
- Length x Width and Amount per unit area to Amount total Calculator
- Net Price and % Tax Rate to Gross Price Calculator
- Original Price and % Discount to Reduced Price Calculator
- Percentage Calculator
- Price A, and A⇒B Exchange Rate to Price B Calculator
- Price B, and A⇒B Exchange Rate to Price A Calculator
- Reduced Price and % Discount to Original Price Calculator
- Selling Price and Markup to Cost Calculator
- Selling Price and Profit Margin to Cost Calculator
- Time total and Amount per unit time to Amount total Calculator
- Total Price and Quantity to Item Price Calculator
- Universal Amount per unit of Area Converter
- Universal Amount per unit of Length Converter
- Universal Amount per unit of Time Converter
- Universal Amount per unit of Volume Converter
- Universal Amount per unit of Weight Converter
- Volume total and Amount per unit volume to Amount total Calculator
- Weight total and Amount per unit weight to Amount total Calculator
Chemical Quantities
Tools for converting and calculating chemical quantities.