Liters per Hour to Milliliters per Minute Converter
Common Conversions
| L/h | mL/min |
|---|---|
| 0.1 | 1.667 |
| 0.5 | 8.333 |
| 1 | 16.667 |
| 2 | 33.333 |
| 5 | 83.333 |
| 10 | 166.667 |
| 25 | 416.667 |
| 50 | 833.333 |
| 100 | 1666.667 |
| 1000 | 16666.667 |
Why this conversion matters in chemistry
Bioreactor feed-rate control is a place this matters. A 2 L/hr glycerol feed into a 1000 L CHO-cell bioreactor for an antibody production campaign is 33.3 mL/min on the analytical-side flow-rate display. Worth doing carefully when a process-control system logs in L/hr but a downstream HPLC titer assay or a real-time metabolic-flux calculation expects mL/min. The ratio of 16.6667 mL/min per L/hr is 1000 mL/L divided by 60 min/hr — a clean geometric ratio.
Formula
mL/min = L/h × 16.6667
Worked Examples
1 L/h = 16.667 mL/min
A slow continuous-feed rate for a fixed-bed catalytic reactor.
6 L/h = 100 mL/min
A typical preparative-chromatography flow rate.
0.12 L/h = 2 mL/min
An analytical HPLC flow rate — the standard mL/min figure.
Frequently Asked Questions
How do I convert L/h to mL/min?
Multiply by 16.6667. The factor decomposes into 1000 mL/L divided by 60 min/hr. The relationship is exact through the SI definitions.
Why do different contexts use different flow units?
Industrial process-control systems default to L/hr for large volumes over long runs; bench-scale pumps, HPLC systems, and analytical instruments default to mL/min for finer control of smaller volumes. The conversion bridges the two operating scales.
What flow rates are typical for peristaltic pumps?
Lab peristaltic pumps cover roughly 0.1 mL/min to 3000 mL/min depending on tubing diameter and rotor speed. Process-scale pumps reach much higher flow rates, where L/hr becomes the more readable unit.