Wh/km is the energy tax on every kilometre—inflation sets part of that tax. This e-scooter Wh/km and inflation efficiency calculator shows adjusted Wh/km when pressure drifts below recommendation and the efficiency you recover by reinflating.
Benefits
- Outputs adjusted Wh/km from current vs. recommended bar.
- Rolling multiplier rises with under-inflation and smaller wheel diameter.
- Range penalty % quantifies inflation efficiency vs. a firm-tyre baseline.
How it works
- Enter current and recommended tyre pressure in bar.
- Set wheel diameter (in) and rider mass (kg).
- Read Wh/km and penalty %—lower Wh/km means better inflation efficiency.
FAQ
What is a typical Wh/km for an e-scooter?
Commuter planning often starts near 12–15 Wh/km on flat asphalt with firm 10″ tyres and a ~75 kg rider—higher with soft tyres, headwinds, or frequent stops. The calculator scales baseline Wh/km with inflation and mass factors.
How does inflation efficiency affect Wh/km?
Each bar below recommendation increases rolling resistance multiplier in the model—raising Wh/km. Reinflating to recommended bar lowers Wh/km without changing battery chemistry, improving km per Wh (inflation efficiency).
Why does rider mass appear in a Wh/km calculator?
Heavier riders increase contact patch load and acceleration work, nudging Wh/km upward. Hold mass constant when A/B testing tyre pressure so inflation efficiency changes are not masked by weight differences.
Technical specifications
- Adjusted Wh/km scales with rolling multiplier × mass factor.
- Under-inflation (bar) = max(0, recommended − current).
- Smaller wheels (<9 in) add extra rolling loss in the model.
- Related: e-scooter-range-vs-tyre-pressure-calculator, escooter-range.
Wh/km is the commuter efficiency scorecard
Kilometres per charge is what riders feel; Wh/km is what planners measure. An e-scooter Wh/km and inflation efficiency calculator makes the energy cost of each kilometre visible—then shows how many extra watt-hours soft tyres add. Fleet operators comparing routes should log Wh/km at known pressure, not only end-of-day SOC.
Inflation efficiency is free range
Motor upgrades and new packs cost money; restoring recommended bar costs minutes. When Wh/km drops after reinflation, you have improved inflation efficiency—the same pack travels farther per charge. Track before-and-after Wh/km readings weekly to catch slow leaks before they dominate your energy budget.
Combine Wh/km with total range planning
Multiply usable pack Wh by inverse Wh/km for distance estimates—or use the E-Scooter Range calculator with matching pressure inputs. Wh/km from this tool feeds the rolling-assumption line in commute spreadsheets so tyre maintenance stays tied to energy math, not guesswork.