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Calculate IV flow rates in mL/hr and drops/min
Critical Medical Disclaimer: This calculator is for educational purposes only. ALWAYS verify IV flow rate calculations with healthcare protocols and double-check with another healthcare professional. Incorrect IV rates can cause serious harm. Use infusion pumps when available.
Flow Rate
125.00 mL/hr
Drip Rate
41.67 drops/min
Formula: Droplets/min = (Volume × Droplet Factor) / (Time × 60)
| IV Set Type | Droplet Factor | Common Use |
|---|---|---|
| Macrodrip Set | 10 drops/mL | Blood transfusions |
| Macrodrip Set | 15 drops/mL | Standard IV fluids |
| Macrodrip Set | 20 drops/mL | Standard IV fluids |
| Microdrip Set | 60 drops/mL | Pediatric, precise control |
| Volume | Time | Droplet Factor | mL/hr | Droplets/min |
|---|---|---|---|---|
| 1000 mL | 8 hrs | 20 | 125 | 42 |
| 500 mL | 4 hrs | 15 | 125 | 31 |
| 100 mL | 1 hr | 60 | 100 | 100 |
Use the formula: Droplets/min = (Volume in mL × Droplet Factor) / (Time in hours × 60). First calculate mL/hr, then convert to drops/min using the drop factor.
Macrodrip sets (10-20 drops/mL) deliver larger drops for faster infusion. Microdrip sets (60 drops/mL) provide more precise control, ideal for pediatrics or medications requiring exact rates.
No. Use infusion pumps whenever possible for accuracy and safety. Manual drip rate calculations should only be used when pumps are unavailable and should always be verified by another healthcare professional.