GASLO
Smart Fuel Planning

Calculate. Plan.
Save.

Gaslo helps you estimate fuel costs instantly so you can plan smarter, drive farther, and spend less.

National Average · Regular Gas
—/gal
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Accurate
Real fuel data. Real results.
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Why it matters
Know the exact dollars you need before pumping. No more guessing — no more being short or overpaying.
Smart Plans
Plan trips with confidence.
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Why it matters
Know what a road trip will cost before you leave the driveway. Budget smarter, drive farther.
Save Money
Optimize fuel. Reduce costs.
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Why it matters
Small leaks add up. Knowing your MPG and cost-per-mile reveals where the money's actually going.
Reliable
Built for drivers you trust.
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Why it matters
No accounts, no tracking, no ads in your way. Just clean math from gas prices straight off U.S. government data.

Fill-Up Cost

Figure out exactly what it'll cost to fill your tank from where it sits right now.
How much fuel is left?
Most accurate
Accurate if you reset trip at last fill-up
Rough estimate — gauges aren't linear

Trip Fuel Cost

Estimate the fuel cost for a specific trip distance.
Estimated Trip Cost—

MPG Calculator

Figure out your real-world fuel economy.
Your MPG—

Cost Per Mile

How much each mile costs you in fuel.
Cost / Mile—

Monthly Gas Budget

Project your typical monthly gas spend.
Monthly Cost (~30 days)—

EV vs Gas Comparison

See which one costs less over a set distance.
Gas Vehicle—
EV—
Savings—
Why Gaslo

Built because I got tired of being short at the pump.

You know that moment — you pull up to the gas station, the teller asks how much you want on the pump, you give them a number, and then you start filling up… only to watch the gauge stop short of full because you didn't put enough on. So you walk back inside, embarrassed, to add a few more dollars.

That happened to me one too many times. Every fill-up turned into guesswork. Was it $30? $40? Half a tank? Three-quarters? I'd round up to be safe and overpay, or round down and come up short.

There had to be a better way than guessing at the pump every single week.

So I built Gaslo. Type in your tank size, how much fuel is left, and the price per gallon — and you get the exact amount you need, before you ever step inside the gas station. No more being short. No more overpaying. No more awkward walks back to the counter.

It's a small problem. But it adds up — and now you don't have to think about it anymore.