Tech & Innovation Calculators
EVs, AI, data centers, and spaceflight: calculators that put real published numbers on the technology everyone is arguing about, with every assumption stated and both sides of every ledger shown.
Electric Vehicles 6
- EV Savings CalculatorGas vs electric: yearly fuel savings, cost per mile, and honest CO2 math.
- EV Charging Time CalculatorHow long a charge really takes: losses and the 80 percent taper counted.
- EV Range CalculatorWhat your EV really delivers vs the sticker: cold, speed, and age, honestly.
- EV Road Trip CalculatorThe first leg is the longest one you will drive all day. Plan the rest honestly.
- EV Semi Emissions CalculatorDiesel vs electric semi: honest CO2, NOx, and soot savings with the grid counted.
- Robotaxi Cost CalculatorAt what price per mile does a robotaxi beat owning your car? The honest break-even.
AI & Data Centers 6
- AI Energy CalculatorWhat your AI chatbot habit costs in energy: an honest, cited low-to-high range.
- LLM API Cost CalculatorPrice your monthly GPT, Claude & Gemini API bill by tokens and request volume.
- Data Center Power CalculatorMegawatts, dollars, and CO2: what it actually takes to run a data center.
- GPU Cluster Power CalculatorFrom one 4090 to 100,000 H100s: megawatts, power bills, and CO2, honestly.
- Rack Cooling CalculatorTurn a rack's kilowatts into BTU, tons of cooling, and honest CFM.
- UPS Runtime CalculatorHow long the battery really lasts: amp-hour honesty, age, and inverter losses counted.
Robotics & Autonomy 2
Networks & Storage 2
Space 3
More tools 6
- EV Charging Cost CalculatorWhat a charge costs, with the losses counted honestly.
- Generator Size CalculatorA specific wattage and size class, with the starting surge counted the right way.
- kVA CalculatorkVA to kW to amps, single or three phase, with the power factor made plain.
- Robotaxi Owner CalculatorBuy a robotaxi and let it earn? The honest owner math: deadhead, take rate, wear.
- Subnet CalculatorNetwork, broadcast and host range from any IP and mask, with the binary shown.
- Voice Typing CalculatorHow much time voice dictation really saves, once your whole day is counted.
How we handle tech topics
Tech arguments run on vibes and press releases. These calculators run on published data: EPA and eGRID figures for emissions, NACFE fleet telemetry for what trucks actually consume, AAA cost tables for what a car actually costs, and vendor price sheets checked against what is actually charged. Every assumption is stated, every default is editable, and when a company's number is a target rather than a measurement, the page says so in plain words.
What lives here
- Electric vehicles. The EV savings calculator prices gas against the meter, the charging time calculator untangles kW from kWh, the range calculator turns the sticker into an honest winter-and-highway number, the EV road trip calculator counts the charging stops, the EV semi emissions calculator puts real numbers on freight pollution, and the robotaxi cost calculator works out when a Cybercab-style ride beats owning a car at all.
- Robotics and autonomy. The robot vs labor cost calculator runs the automation payback math with measured prices labeled measured and company targets labeled targets, and the autonomous truck safety calculator prices the self-driving-semi safety question against verified federal crash data, with the assumption dial in your hands and the skeptic's row always on the table.
- Networks and storage. The file transfer time calculator settles the bits-vs-bytes question and knows when to ship a drive instead, and the RAID calculator prices usable capacity against fault tolerance and never lets you mistake either for a backup.
- AI and data centers. The AI energy calculator estimates what your prompts actually draw, the LLM API cost calculator prices tokens, the data center power calculator turns IT load and PUE into megawatts and dollars, and the GPU cluster power calculator answers the question of the decade: what does it take to run 100,000 H100s. Behind them, the rack cooling calculator turns those watts into BTU, tons, and airflow, and the UPS runtime calculator tells you how long the batteries hold when the grid lets go.
- Space. The delta-v calculator runs the rocket equation, the orbital period calculator runs Kepler (and derives why geostationary sits at exactly 35,786 km), and the space travel time calculator answers how long to Mars at any speed, honestly labeled as the straight-line fantasy it is.
If there is a tech question you want honest numbers on, tell us.