Ask. Calculate. Solve. Decide.
Practical calculators, interactive troubleshooters, decision tools, comparisons and planners for everyday and technical questions.
What do you need to calculate or solve?
Open the right tool using the kind of wording people actually search for.
Quick AC Sizing
Enter the room details, press the clear Calculate button and see the result instantly.
This quick result is preliminary sizing. Orientation, insulation, glazing and local climate can change the final selection.
Recent & favorite tools
Featured tools
Electricity Cost Calculator
How much electricity does a device cost to run?
→Watts to Amps Calculator
How many amps is a given wattage?
→Battery Runtime Calculator
How long can a battery power a device?
→Solar Panel Sizing Calculator
How much solar panel capacity do I need?
→Air Conditioner BTU Calculator
What AC capacity does my room need?
→Paint Calculator
How much paint do I need?
→Fuel Cost Calculator
How much will a trip cost in fuel?
→Download Time Calculator
How long will a file take to download?
→Voltage Drop Calculator
How much voltage will I lose along a cable?
→Cable Size Preliminary Calculator
What conductor cross-section is a reasonable starting point?
→Inverter Sizing Calculator
How many watts of inverter capacity do I need?
→Concrete Volume Calculator
How many cubic metres of concrete do I need?
→Tire Size Comparison
How different are two tire sizes in diameter and indicated speed?
→PSU Wattage Calculator
How much power supply capacity does my PC need?
→Air Conditioner Electricity Cost Calculator
How much electricity and money does an AC use per day or month?
→Fuel Consumption Calculator
How do I calculate real fuel consumption from a fill-up?
→LED Resistor Calculator
What resistor value and wattage does an LED need?
→Generator Sizing Calculator
What generator kVA class do my loads need?
→UPS Sizing and Battery Calculator
What UPS VA rating and battery energy does my computer need?
→Dew Point Calculator
What is the dew point from temperature and relative humidity?
→Room Renovation Material Planner
How much paint, flooring and skirting does one room need?
→Screen PPI Calculator
What is the pixel density of a monitor or phone?
→IPv4 Subnet Calculator
What are the network, broadcast and host range for an IPv4/CIDR?
→Wi‑Fi Router / Mesh Selector
Do I need one router, access points or a mesh system?
→EV Range Calculator
What driving range do battery size and consumption imply?
→Discount Calculator
What is the final price and real savings after one or two discounts?
→PC Powers On but No Display – Troubleshooter
Fans spin but there is no video output. What should I check first?
→Wi‑Fi Connected but No Internet – Troubleshooter
Wi‑Fi is connected but the internet is down. Device, router or ISP?
→Air Conditioner Not Cooling – Troubleshooter
The AC runs but does not cool well. What should I check first?
→12V vs 24V vs 48V System Current Comparison
How much current does the same load draw at 12 V, 24 V and 48 V?
→SATA SSD vs NVMe Transfer Time Comparison
How long would the same file take on SATA SSD versus NVMe?
→Voltage Divider Calculator
What output voltage will two resistors produce?
→Battery Series / Parallel Bank Planner
What voltage and Ah will my battery bank produce?
→Solar Battery Storage Calculator
How much battery storage do I need for daily use and autonomy?
→Air Changes per Hour (ACH) Calculator
How many times per hour is the room air replaced?
→Room Heating Load Estimator
How much heating capacity might a room need?
→Bitrate to File Size Calculator
How large will a video file be at a given bitrate and duration?
→IP Camera / NVR Storage Calculator
How many TB will my cameras need?
→RAID Usable Capacity Calculator
How much usable capacity remains with RAID 0/1/5/6/10?
→L/100 km to MPG Converter
How do I convert L/100 km to US or UK MPG?
→EV kWh/100 km Consumption Calculator
What was my real energy consumption between charges?
→Laptop Not Charging – Troubleshooter
Why is my laptop plugged in but not charging?
→SSD Not Detected – Troubleshooter
Why is my SSD missing from BIOS or the operating system?
→Explore topics
Electricity & Energy
Electricity use, batteries, inverters, solar and practical electrical calculations.
Home & Renovation
Paint, flooring, tile, room and material calculators.
HVAC & Climate
BTU sizing, AC energy use, heat-pump, ventilation and room capacity tools.
Computers & Internet
Download/upload time, power, video storage and networking tools.
Automotive & Travel
Fuel economy, trip, tire and EV charging calculators.
Everyday Life
Percentage, time, sizing, consumption and practical decision tools.
Collections
Use related tools together to plan a task from start to finish.
Caravan & Off‑Grid Power Plan
Connect battery, inverter, solar, cable, generator and energy-use calculations in one planning flow.
8 linked toolsRoom Renovation Plan
Break a room project into walls, paint, flooring, tile, grout and skirting quantities.
8 linked toolsPC & Home Network Setup
Plan PSU, UPS, screen density, internet, subnet and Wi‑Fi infrastructure together.
9 linked toolsRoad Trip & EV Plan
Connect fuel, real consumption, total trip cost, EV range, charging time and stop planning.
8 linked toolsHome Energy & Savings
Compare appliance, AC, heat-pump and solar scenarios as one home-energy workflow.
7 linked toolsHome Energy Independence
Measure demand, size solar and storage, then plan the inverter, cable and battery chain together.
8 linked toolsDigital Storage & Transfer
Calculate video, camera, RAID and network capacity in one workflow and isolate storage bottlenecks.
8 linked toolsRoom Comfort: Heating, Cooling & Air
Connect room heat load, radiator, AC size, ventilation and energy use in one comfort workflow.
8 linked toolsEvery tool is built to complete a real task.
Tool first
Whenever possible, the user completes the task directly on the page.
Method visible
Formulas, assumptions and limits are explained.
SolveChain
Each result connects to the next natural question.
Global use
Turkish and English today, with an architecture that can expand to local units and currencies.