Drops/min to mL/hour Converter

Convert IV drip rate from drops/min (gtt/min) to mL/hour and vice versa.

For educational and clinical reference. Not a substitute for medical judgment. See the medical disclaimer.
→ mL/h
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→ drops/min
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References

  1. Institute for Safe Medication Practices (ISMP). Safe practice guidelines for IV infusion administration.

How to use

  1. Select drop factor (20 = macro / 60 = micro).
  2. Enter either drops/min OR mL/hour.
  3. The other value updates instantly.

Frequently asked questions

Macrodrop vs microdrop?

Standard macrodrop sets deliver 20 drops/mL. Microdrop (pediatric) sets deliver 60 drops/mL.

Formula?

mL/h = (drops/min × 60) / drops_per_mL. Drops/min = (mL/h × drops_per_mL) / 60.

Why use drops/min?

When an IV is regulated manually without a pump (gravity infusion), counting drops/min is the only way to control rate.

Pediatric tip?

Always use microdrop (60 gtt/mL) sets for children to avoid accidental rapid infusion.

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