This molality (b) units conversion tool will convert values for the number of moles of solute per unit mass of solution into any combination of molar amount or mass units.

# Mass & Weight Calculators

Online web tools for weight or mass measurement conversions and calculations

## Molar Mass Converter

This molar mass (M) units conversion tool will convert values of mass per unit molar amount of substance into any combination of mass and molar amount units.

## Kinetic Energy & Velocity to Mass Calculator

Use this calculator to determine the mass of an object from the kinetic energy or work required to accelerate or decelerate an object, and its velocity m = 2·KE/v²

## Force & Acceleration to Mass Calculator

Use this calculator to determine the mass from the net force applied to or produced by an object and its resulting acceleration m = F/a

## Single Unit Weight to Stones and Pounds (st lb) Converter

This tool will allow you to enter a singular weight measured in any units, and convert it to the equivalent weight in stones and pounds (lb oz).

## Stones and Pounds (st lb) to Single Unit Weight Converter

This tool will allow you to enter a weight measured in stone (st) and pound (lb) divisions and convert it to the an equivalent singular weight in other units.

## Single Unit Weight to Pounds and Ounces (lb oz) Converter

This tool will allow you to enter a weight measured in grams (g), kilograms (kg), stones (st) plus many other units, and convert it to the equivalent weight in pounds and ounces (lb oz).

## Weight Converter

This conversion tool will convert a measurement of weight from one unit to another. Use this tool to convert grams, ounces, pounds, kilograms, stones and tons.

## Pounds and Ounces (lb oz) to Single Unit Weight Converter

This tool will allow you to enter a weight measured in pound (lb) and ounce (oz) divisions and convert it to the equivalent weight in grams (g), kilograms (kg), stones (st) and many other units.

## Length x Width and Area Density to Total Mass Calculator

This calculator is used to determine the total mass of an item from the measured length and width with a specified area density, m = L·W·ρₐ

## Area Total and Area Density to Total Mass Calculator

This calculator is used to determine the total mass of an item from the total area measured with a specified area density, m = A·ρₐ

## Length Total and Linear Density to Total Mass Calculator

This calculator is used to determine the total mass of an item from the total length measured with a specified linear mass density, m = L·λₘ

## Gross – Net to Tare Weight Calculator

This tool will calculate the tare weight (TW) by subtracting the net weight (NW) from the gross weight (GW) reading you entered and convert any combination of weight (mass) units for each weight value.

## Net + Tare to Gross Weight Calculator

This tool will calculate the gross weight (GW) by adding the net weight (NW) to the tare weight (TW) reading you entered and convert any combination of weight (mass) units for each weight value.

## Gross – Tare to Net Weight Calculator

This tool will calculate the net weight (NW) by subtracting the tare weight (TW) from the gross weight (GW) reading you entered and convert any combination of weight (mass) units for each weight value.

## Dead Weight Tester Pressure & Area to Mass Calculator

This online tool will calculate the required mass to be added to a dead weight tester pressure calibrator by entering the target pressure, the effective area of the piston-cylinder and the local gravity, m = P·A/g

## Mass Converter

This conversion tool will convert a measurement of mass from one unit to another. Use this tool to convert grams, ounces, pounds, kilograms, stones and tons.

## Delivery Service Volumetric Weight Calculator

This Volumetric Weight Calculator will convert dimensions of shipment package in any units to dimensional shipping weight using the courier’s formula.

## Total Time & Flow Rate to Total Mass Calculator

Calculate the total mass that will pass during a specified time period and average flow rate, m = t·ṁ

## Volume & Density to Mass Calculator

This calculator is used to determine the mass from the volume and density, and show a conversion scale from volume to mass centred around each calculation, m = V·ρ

## Weight to Mass Calculator

This tool calculates the mass of an object from the measured weight and local gravity for the required geo location on earth or any other source of gravitational pull, m = F/g