Pump Head & Pump Selection Calculator: Size Your Pump Perfectly
Calculate total dynamic head, required pressure, and select the right pump for any plumbing system. Avoid underpowered pumps — free tool, no sign-up.
⚡ Instant Results 🔓 100% Free ✅ No Signup 🎯 99% Accuracy 🏗️ Used by Pros
🔧 Pump Quick Preview
📏 Total Head: 14.2m | 💧 Pump: 1.5 HP
Stop Pump Failures – Professional Pump Head & Selection Calculator
Undersized pumps mean low flow and pressure problems. Oversized pumps waste energy and money. Our plumbing calculator helps homeowners, plumbers, and contractors calculate Total Dynamic Head (TDH) and select the right pump.
- ✅ Solve: Weak water pressure, pump burnout, high energy bills
- ✅ Precision: Calculates vertical lift, friction loss, and pressure head
- ✅ Result: Recommended pump head (metres) and power (HP/kW)
Key Benefits
- ✔️ Never buy the wrong pump again
- ✔️ Reduce energy consumption by 20-30%
- ✔️ Extend pump lifespan
- ✔️ Trusted by 8,000+ UK professionals
⚙️ Free Pump Head Calculator
Enter your system details — get Total Dynamic Head & pump recommendation
Distance from water level to highest outlet
Includes horizontal and vertical sections
Typical: 20-40 L/min (shower), 50-80 L/min (garden)
Typical: 2-3 bar for showers, 1.5 bar for taps
📊 Your Pump Selection Results
— m
Required pump pressure: — bar
Estimated pump power: — HP / — kW
Friction loss: — m
📏 Pump head: 0-50m range 💧 12,000+ calculations
Smart Features For Perfect Pump Sizing
Total Dynamic Head
Calculates vertical lift + friction loss + pressure head.
Flow Rate Integration
Accounts for your required flow (L/min).
Power Estimation
Recommends pump HP/kW based on head & flow.
Pipe Material & Size
Accurate friction loss calculations.
Pressure Head
Converts desired outlet pressure to head.
100% Free
Unlimited calculations, no signup.
Mobile Ready
Use on-site or in the office.
Pump Selection Guide
Get specific pump type recommendations.
How The Pump Head Calculator Works
1️⃣ Enter vertical lift & pipe length
2️⃣ Set desired flow rate & pressure
3️⃣ Select pipe size & material
4️⃣ Get TDH & pump recommendation
Why Use Our Pump Selection Tool
⚡ 5x Faster
Size pumps in seconds not hours.
Size pumps in seconds not hours.
🎯 Precision
Avoid undersized/oversized pumps.
Avoid undersized/oversized pumps.
💰 Save Money
Reduce energy bills & pump replacement.
Reduce energy bills & pump replacement.
🚫 No Pressure Issues
Get adequate flow everywhere.
Get adequate flow everywhere.
🏆 Professional Grade
Trusted by pump installers.
Trusted by pump installers.
Perfect For Every Pumping Application
🏠 Homeowners
- Boost low water pressure
- Choose right shower pump
- Garden irrigation pumps
- Basement drainage pumps
- Save on energy bills
🔧 Plumbers
- Quick pump quotes for clients
- Booster set calculations
- Reduce callbacks
- Comply with regulations
- Professional documentation
🏗️ Contractors
- Commercial building pumps
- Multi-storey pressure systems
- HVAC circulation pumps
- Reduce installation errors
- Meet project specifications
🛠️ DIY Enthusiasts
- Learn pump sizing principles
- Rainwater harvesting pumps
- Pond & fountain pumps
- Avoid costly mistakes
- Confidently buy equipment
Why Choose Speedy Jet Plumbers?
👨🔧 Real plumbing experts – Gas Safe & pump specialists
🏆 Trusted by 5,000+ UK homeowners & businesses
⚡ Fast response – emergency same-day service
💰 Affordable transparent pricing & free estimates
🔧 Free tools + honest advice, no hidden agenda
Pump Sizing FAQs
What is Total Dynamic Head (TDH)?➕
TDH is the total equivalent height that a pump must lift water, including vertical lift, friction losses in pipes, and any pressure required at the outlet. It's the key number for pump selection.
How do I know what size pump I need?➕
Use our calculator to find TDH and required flow rate. Then match these numbers to a pump curve. We provide recommended pump specifications based on your inputs.
Do I need to sign up to use this tool?➕
No signup, no email required. 100% free tool with unlimited calculations.
What's the difference between head and pressure?➕
Head is measured in metres, pressure in bar. 1 bar = 10.2 metres of head. Our calculator converts between them automatically.
How does pipe friction affect pump sizing?➕
Friction loss increases with longer pipes, smaller diameters, and rougher materials. Our calculator includes this to give you accurate TDH.
What pump type is best for my application?➕
Centrifugal pumps for general water supply, booster pumps for pressure issues, submersible pumps for wells, circulation pumps for heating. We recommend based on your TDH.
Can Speedy Jet Plumbers install pumps?➕
Absolutely. We install all pump types: shower pumps, booster sets, borehole pumps, and circulation pumps across the UK.
What happens if I choose an undersized pump?➕
Low flow, poor pressure, pump runs continuously, burns out quickly, and wastes energy. Our calculator helps you avoid this.