Convert an already-known mass flow rate between kilograms, grams, milligrams, metric tonnes, pound-mass, and ounce-mass per second, minute, or hour.
Mass flow rate measures how much mass passes a point or through a process per unit time. Examples include kg/s, kg/h, and lb/min.
Kilogram per second is the canonical SI expression used by this converter. Each source value is normalized to kg/s at full precision and then divided by the target-unit factor.
target = source × source factor to kg/s ÷ target factor to kg/s1 kg/s = 3,600 kg/h1 t/h = 1,000 kg/h = 0.2777777778 kg/s1 lb/s = 0.45359237 kg/s16 oz/s = 1 lb/s1 kg/s × 3,600 = 3,600 kg/h.
1 kg/s equals 3.6 metric tonnes per hour.
1 lb/s uses the exact international avoirdupois definition and equals 0.45359237 kg/s.
60 lb/min equals 1 lb/s, or 0.45359237 kg/s.
1 t/h equals 1,000 kg/h, or approximately 0.2777777778 kg/s.
1 kg/s is approximately 132.2773573109 lb/min.
16 oz/s equals 1 lb/s.
Per-second, per-minute, and per-hour units differ by factors of 60 and 3,600.
Every t unit here uses exactly 1,000 kilograms; US short tons and imperial long tons are not included.
lb/s, lb/min, and lb/h are mass-flow units, not pound-force rates.
Kilograms, grams, and milligrams provide SI-scaled mass numerators. Metric tonnes per hour are also common for larger industrial rates.
The converter derives these factors from the shared mass and duration systems instead of storing rounded reverse factors.
The exact relationship 1 lb = 0.45359237 kg is used. One avoirdupois ounce is one-sixteenth of a pound, so 16 oz per any matching time denominator equals 1 lb per that denominator.
Mass flow uses mass divided by time, such as kg/s or lb/min. Volumetric flow uses volume divided by time, such as m³/s, L/min, GPM, or CFM.
Mass flow equals density multiplied by volumetric flow. Because density depends on the material and conditions, this converter does not convert between mass flow and volume flow or assume water, air, oil, or another substance.
A mass such as kg or lb has no time denominator and is not a mass flow rate. Force units such as N, lbf, and kgf also describe a different physical quantity and are excluded.
This calculator treats mass flow as a nonnegative magnitude. Engineering systems that use a negative sign to encode direction should convert the magnitude and apply their documented direction convention separately.
Multiply by the source unit's kg/s factor and divide by the target unit's kg/s factor.
Kilogram per second, written kg/s, is the coherent SI expression.
There are 3,600 kg/h in 1 kg/s.
One kg/s equals 3.6 metric tonnes per hour.
Multiply t/h by 1,000 and divide by 3,600. One t/h is approximately 0.2777777778 kg/s.
Multiply by exactly 0.45359237.
Divide kg/s by 0.45359237 and multiply by 60. One kg/s is approximately 132.2773573109 lb/min.
It is pound-mass per second. Force-rate units such as lbf/s are not supported.
Mass flow is mass per time; volumetric flow is volume per time.
Not without density. The same mass can occupy different volumes in different materials or conditions.
Not without the fluid density. No density or fluid assumption is made here.
The relationship is mass flow = density × volumetric flow, so density supplies the missing mass-per-volume dimension.
No. Mass flow rate includes a time denominator.
A negative sign can encode direction in some systems, but this converter accepts nonnegative magnitudes only.
No. Tonne here means exactly 1,000 kg. US short tons and imperial long tons are not included.