Four calculators, all free, all running entirely in your browser. No account, no email address, no tracking script, and no paywall — now or later. Each one can be embedded in your own page with a single line of HTML, and you do not need to ask us first.
Last updated: 4 September 2026.
Flight emissions calculator
What a flight emits per passenger, using the UK government’s published conversion factors rather than a number of our own invention. It shows which factor it applied, and it lets you switch the non-CO2 radiative-forcing multiplier off so you can see both figures — most airline calculators quietly report only the smaller one.
- Domestic, short-haul and long-haul factors, each dated and attributed
- Non-CO2 effects included by default, switchable
- Also reports the jet fuel burned per passenger, derived from the CO2 mass
Open the flight emissions calculator · standalone version for embedding
EV charging cost calculator
What it costs to charge at home in your state, per year and per 100 miles, against what the same miles cost in petrol.
- Average residential electricity price for all 50 states
- Cost per 100 miles and cost per year
- Reports the honest result — in Hawaii it shows charging costing more than petrol
Open the ev charging cost calculator · standalone version for embedding
EV road trip calculator
Simulates the drive rather than dividing two numbers: how many charging stops, how long plugged in at each, and what the trip costs against petrol.
- Models a 10–80 percent charging curve, not peak kW
- Counts stops, charging minutes and total added time
- Trims the last stop so you are not paying to arrive full
Open the ev road trip calculator · standalone version for embedding
Home EV charger payback calculator
Whether a Level 2 charger earns back what it costs to install — and it will say plainly when the honest answer is that it never does.
- Asks how much you already charge at home, which most tools ignore
- Folds fixed per-session fees into the per-kWh price
- No expired federal tax credit baked into the result
Open the home ev charger payback calculator · standalone version for embedding
EPA efficiency reference: kWh per 100 miles (2026 models)
Every calculator above needs one honest efficiency figure. These are the official EPA combined ratings for one representative trim of each 2026 nameplate, pulled from fueleconomy.gov’s public vehicle service on 5 September 2026. Lower kWh/100 mi is better; MPGe and range are the figures printed on the window sticker. Other trims, wheel sizes and drivetrains of the same model differ, sometimes by 10-15%.
| Vehicle (EPA trim) | kWh / 100 mi | MPGe | EPA range (mi) |
|---|---|---|---|
| Tesla Model 3 Premium RWD | 24.6 | 137 | 363 |
| Toyota bZ (energy capacity 191 Ah) | 25.5 | 131 | 314 |
| Tesla Model Y Long Range AWD | 27.5 | 123 | 327 |
| Lucid Air G Touring XR AWD with 20 inch wheels | 28.2 | 120 | 480 |
| Volkswagen ID.4 | 29.8 | 113 | 291 |
| BMW i4 eDrive35 Gran Coupe (19 inch Wheels) | 30.8 | 109 | 251 |
| Hyundai Ioniq 5 AWD (19inch Wheels) | 31.7 | 106 | 290 |
| Chevrolet Equinox EV AWD (11 kW Charger) | 32.6 | 103 | 307 |
| Ford Mustang Mach-E AWD | 33.6 | 100 | 240 |
| Honda Prologue AWD | 34.1 | 99 | 294 |
| Nissan ARIYA e-4ORCE 63kWh | 35.3 | 95 | 205 |
| Chevrolet Blazer EV AWD | 35.7 | 94 | 283 |
| Kia EV6 AWD GT | 41.0 | 83 | 231 |
| Tesla Cybertruck AWD | 42.9 | 79 | 325 |
| Kia EV9 GT | 43.0 | 78 | 260 |
| Rivian R1T All-Terrain Dual Large (20in) | 44.4 | 76 | 289 |
| Rivian R1S All-Terrain Dual Large (20in) | 44.4 | 76 | 289 |
| Chevrolet Silverado EV Ext Range (11kW Charger) | 49.5 | 68 | 410 |
Source: U.S. EPA / DOE, fueleconomy.gov vehicle web service, model year 2026, combined-cycle consumption (combE). Retrieved 2026-09-05. This table may be reproduced with a link to this page.
Embedding any of them
Each calculator page carries a ready-made line of HTML you can copy. It looks like this:
<iframe src="https://zerocarbondrive.com/embed/ev-charging-cost-calculator/" width="100%" height="900" loading="lazy"></iframe>The embedded copy is a stripped-down page with no navigation, no advertising and no analytics beyond what the whole site already uses. It carries one small credit link back to the calculator it came from, and that is the only condition attached. If you need a different height, or an embed breaks, tell us and it will be fixed.
Why these are free
Because a calculator behind a sign-up form is not a calculator, it is a lead-capture form. These pages carry ordinary advertising and that is the whole business model. There is no version with more features, no data collection, and nothing is emailed to you.
The assumptions behind each tool are written on its own page rather than hidden, because the assumptions are where these calculations usually go wrong. If you find a figure that no longer matches its source, or arithmetic you disagree with, tell us — corrections are made in the open and noted on the page. How we source and correct everything here is set out in our editorial policy, and the site is written and edited by Muhammet Çay.
Guides that go with them
The calculators answer “how much”; the guides explain why the number is what it is.
- Level 2 EV charger guide — speeds, amps and what to actually buy.
- EV charging cost by state — the full 50-state table behind the cost calculator.
- Idle, congestion and session fees — the charges the networks do not publish.
- Utility EV charger rebates — what is left now the federal credit has gone.
- Longest range electric cars — every 2026 EV ranked by official EPA range, with kWh per 100 miles.
- All guides — everything we keep current.
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