Hydraulic Power Calculator
kW in a hydraulic circuit — the P·Q/600 rule.
600 = 60 s × 10 (bar→Pa, L→m³ collapse). 200 bar × 60 L/min = 20 kW — every relief-valve squeal is exactly this much heat going into the oil instead of the work.
Formula
Hydraulic Power Calculator is a free hydraulic power for mechanical and machine-design engineers — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Hydraulic Power Calculator
kW in a hydraulic circuit — the P·Q/600 rule. The calculation implements P(kW) = p(bar)·Q(L/min)/600 (Fluid power formulas). 600 = 60 s × 10 (bar→Pa, L→m³ collapse). 200 bar × 60 L/min = 20 kW — every relief-valve squeal is exactly this much heat going into the oil instead of the work.
How to use Hydraulic Power Calculator
- 1Enter Pressure in bar.
- 2Enter Flow in L/min.
- 3Enter Pump overall efficiency in %.
- 4Read Hydraulic power, Motor input needed instantly — no submit button needed.
- 5Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Hydraulic Power Calculator?
- ✓Implements the standard formula — P(kW) = p(bar)·Q(L/min)/600
- ✓Reference cited on-page: Fluid power formulas
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Hydraulic Power Calculator use?+
It computes P(kW) = p(bar)·Q(L/min)/600, per Fluid power formulas. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
600 = 60 s × 10 (bar→Pa, L→m³ collapse). 200 bar × 60 L/min = 20 kW — every relief-valve squeal is exactly this much heat going into the oil instead of the work.
Is this suitable for machine design coursework?+
Yes — these are the exact Shigley/Machinery's-Handbook formulas, with the substitution shown step by step, so you can follow the worked example into your own calculation sheet.
Is the Hydraulic Power Calculator free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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