Liters per second to Cubic meters per hour Calculator

Direct answer

Multiply the entered liters per second value by 3.5999999999928 to express it in cubic meters per hour (m³/h). This converts liter per second (L/s) to cubic meter per hour (m³/h) within the documented flow rate family.

Variables and formula

• Liters per second (L/s): the source value measured in liter per second.
• Cubic meters per hour (m³/h): the same quantity expressed in cubic meter per hour.
• Conversion factor: 3.5999999999928 cubic meters per hour per liter per second.

Cubic meters per hour = Liters per second × 3.5999999999928

The generator emits numeric factors with at most 15 significant digits. Calculator results keep up to 10 significant digits for display; this formatting does not increase the precision of the measurement.

Unit definitions and named variants

Source unit: liter per second (L/s). Because one minute is exactly 60 seconds, 1 L/s = 60 L/min exactly. Named variant used: Volumetric flow; no standard-condition normalization. Reference: Bureau International des Poids et Mesures: The International System of Units (SI), 9th edition, version 4.01.

Target unit: cubic meter per hour (m³/h). One cubic metre is exactly 1000 litres and one hour is exactly 60 minutes, so 1 m³/h = 1000/60 L/min. Named variant used: Volumetric flow; no standard-condition normalization. Reference: Bureau International des Poids et Mesures: The International System of Units (SI), 9th edition, version 4.01.

The L/s-to-m³/h direction remains inside the flow rate quantity; it changes the unit label and numerical scale, not the kind of quantity being measured.

Relationship and precision

This route uses at least one deliberately preserved rounded factor. Treat the displayed factor as an approximation at the precision documented below.

• L/s relationship: The time relationship is exact.
• m³/h relationship: The preserved base factor is a rounded decimal representation of the exact ratio 50/3 L/min.

To audit the factor through the family base unit, divide the raw dataset factors 60 by 16.6666666667. The generator emits that quotient once at 15 significant digits as the canonical direct factor 3.5999999999928; runtime calculations do not divide the already-emitted base factors again.

Reproducible example

For 10 liters per second, 10 × 3.5999999999928 = 35.999999999928 cubic meters per hour. Repeating the same multiplication with the stated factor reproduces the displayed conversion before interface rounding.

Directional scale check

Because one liter per second contains 3.5999999999928 cubic meters per hour, the target number is larger than the source number for every positive input. Zero maps to zero, while negative inputs are rejected because this family models non-negative magnitudes.

Interpretation

Read the result as cubic meters per hour, not liters per second. A value entered as L/s leaves the calculator labelled m³/h; this directional distinction matters even when the two units describe the same flow rate quantity.

Assumptions and limitations

• Only non-negative flow magnitudes are accepted; direction is outside this family.
• Cubic foot per minute uses the international foot, not a legacy survey-foot volume.
• Gas flows quoted at standard or actual conditions require temperature and pressure normalization that this unit-only converter does not perform.

Common mistakes

• L/s is 60 times L/min, not 1/60 of it.
• m³/h is volumetric flow, not velocity in m/h.

Continue within the Flow Rate family

See the Flow Rate conversion hub for its five-unit reference table and all 20 directed routes.

• Reverse the direction: Cubic meters per hour to Liters per second
• Compare another flow rate route: Liters per second to Liters per minute
• Compare another flow rate route: Liters per second to US gallons per minute
• Compare another flow rate route: Liters per second to Cubic feet per minute
• Compare another flow rate route: Cubic meters per hour to Liters per minute

Assumptions

• The entered value uses liters per second exactly as labelled.
• Only non-negative flow magnitudes are accepted; direction is outside this family.
• Rounding and measurement uncertainty remain the user's responsibility.

Sources and methodology

CalcMotive publishes the formula and assumptions so you can decide whether the estimate fits your use case. See our methodology standards.

• The International System of Units (SI), 9th edition, version 4.01; Bureau International des Poids et Mesures; accessed Aug 7, 2026