# Mass Flow Rate Converter (kg/s / lb/h / t/h)

Convert mass flow rate between kg/s (kilograms per second, SI base), lb/h (pounds per hour, 1 lb = 0.45359237 kg), and t/h (tonnes per hour, 1 t = 1000 kg). Converts via kg/s to the target unit and also lists the equivalent value in all three units for reference. Used for boiler feedwater, chemical dosing, fuel consumption, and compressed-gas metering.

> Canonical page: https://elysiatools.com/en/tools/flow-rate-mass-converter

- **Category:** Math & Numbers

- **Keywords:** mass flow rate, flow rate conversion, kg/s, kilograms per second, lb/h, pounds per hour, t/h, tonnes per hour, boiler feedwater, chemical dosing, fuel consumption, mass flux

## Overview

Convert non-negative mass flow rates between kg/s, lb/h, and t/h. Enter a value, select the input and output units, and receive the converted result plus equivalent values in all three units.

## Inputs

- **Input unit** (select)
- **Value** (number): Mass flow value in the selected Input unit. Must be non-negative.
- **Output unit** (select)
- **Decimal Places** (number)

## When to use

- Convert boiler feedwater flow from kg/s to lb/h.
- Translate steam, fuel, or compressed-gas ratings between lb/h and t/h.
- Compare chemical dosing or process flow measurements reported in different units.

## How it works

- Enter a non-negative mass flow value.
- Select the input unit: kg/s, lb/h, or t/h.
- Select the desired output unit and choose between 0 and 10 decimal places.
- The converter calculates through kg/s and returns the target value with equivalents in kg/s, lb/h, and t/h.

## Use cases

- Boiler feedwater and steam flow calculations.
- Chemical dosing and process-material flow comparisons.
- Fuel consumption and compressed-gas metering in mixed-unit facilities.

## Frequently asked questions

### Which mass flow units are supported?

The converter supports kg/s, lb/h, and t/h.

### What value should I enter?

Enter a non-negative mass flow value in the selected input unit.

### Which conversion basis is used?

Conversions use kg/s as the intermediate unit, with 1 lb equal to 0.45359237 kg and 1 t equal to 1000 kg.

### Does the result include other unit equivalents?

Yes. The JSON result lists equivalent values in kg/s, lb/h, and t/h.

### How many decimal places can I display?

You can choose from 0 to 10 decimal places; the default is 4.

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