calculatorsonline.co.uk
Volumetric Flow Rate Calculator
Calculate volumetric flow rate from pipe size and fluid velocity.
droplet Free Online Tool
⚡ Instant Results
📊 Clear Comparison
🔒 100% Free Tool
Flow rate
Compare Your Options And Get Clear Answers
Calculate volumetric flow rate from pipe size and fluid velocity.
Volumetric Flow Rate Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: Q = A x v, A = pi d² / 4.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Volumetric Quick Guide
Typical values for reference.
| Diameter | Velocity | Spare | Flow |
|---|---|---|---|
| 15 mm | 1 m/s | – | 0.18 L/s |
| 25 mm | 1.5 m/s | – | 0.74 L/s |
| 50 mm | 1.5 m/s | – | 2.95 L/s |
| 100 mm | 2 m/s | – | 15.71 L/s |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Volumetric Flow Rate Calculator FAQ
Answers to common questions about this calculator.
Multiply pipe area by fluid velocity.
About 1 to 3 m/s for water.
Multiply litres per second by 15.85.
It affects losses, not Q = Av.