Industry-Specific

  • Concrete Slab Calculator
    Calculate concrete needed for a slab in cubic yards and cubic feet, plus how many 40, 50, 60 or 80 lb bags to buy. Free estimator.
  • Slope / Grade Calculator
    Calculate slope as a percent grade, angle of incline, slope length and ratio from rise and run. Free, instant grade calculator for any units.
  • Miles Per Gallon (MPG) Calculator
    Free MPG calculator: enter miles driven and gallons used to find your car's miles per gallon fuel economy, plus the L/100 km equivalent.
  • Paint Volume & Coverage Calculator
    Calculate how many gallons of paint you need based on wall area, number of coats, and coverage per gallon. Free, fast paint estimator.
  • Engine Displacement Volume Calculator
    Calculate total engine displacement from bore, stroke and cylinder count. Get results in cc, liters and cubic inches instantly with this free tool.
  • Raised Garden Bed Soil Calculator
    Calculate how much soil you need for a raised garden bed in cubic feet, cubic yards, and number of bags. Enter length, width, and depth.
  • Fill Dirt Calculator
    Calculate how much fill dirt you need in cubic yards and tons. Enter length, width and depth to estimate volume, weight and cost for your project.
  • Car Sales Tax Calculator (US)
    Estimate US car sales tax. Enter vehicle price, trade-in, rebate, and your state+local rate to see tax owed and total out-the-door cost.
  • Home EV Charging Cost Calculator
    Estimate the cost of charging your electric vehicle at home. Enter miles driven, efficiency (mi/kWh) and your electricity rate to see total cost and cost per mile.
  • EV Charging Time Calculator
    Estimate how long it takes to charge your electric vehicle from your battery size, charger power, start/target charge level and efficiency.
  • EV Cost Per Mile Calculator
    Calculate your electric vehicle's energy cost per mile from your electricity price and the EV's kWh consumption per 100 miles.
  • Wheelchair Ramp Slope Calculator
    Calculate wheelchair ramp slope ratio, grade percent and incline angle from rise and run. Check against the US ADA 1:12 (8.33%) standard.
  • Degrees to Slope Percent Calculator
    Convert an angle in degrees to slope percent (grade). Enter degrees to get the percentage rise/run and the equivalent 1-in-N ratio instantly.
  • Room Area Calculator (Square Feet & Square Meters)
    Calculate room area from length and width in feet or meters. Instantly convert between square feet and square meters for any room.
  • Wall Paint Surface Area Calculator
    Calculate the wall surface area of a room and the paint needed. Deducts doors and windows from the gross area to give net square feet and gallons.
  • Manning's Equation Open Channel Flow Calculator
    Calculate open channel flow velocity and discharge with Manning's equation using roughness, area, wetted perimeter, and slope (SI units, m³/s).
  • Server Power Consumption Cost Calculator
    Calculate the monthly and yearly electricity cost of running servers 24/7. Enter watts, price per kWh and server count to estimate power expenses.
  • Cloud VM / EC2 Instance Cost Calculator
    Estimate the monthly, daily and yearly cost of running cloud VMs or AWS EC2 instances from instance count, hourly rate and hours per month.
  • Serverless / Lambda Cost Calculator
    Estimate your monthly serverless function cost (AWS Lambda style) from requests, duration, memory and pricing per request and per GB-second.
  • Megabits to Megabytes per Second Converter
    Convert Megabits per second (Mbps) to Megabytes per second (MB/s) instantly. Just divide by 8 — find your real download speed in seconds.
  • SLA Uptime Percentage Calculator
    Calculate SLA uptime and availability percentage from downtime over any period. Convert minutes of outage into 99.9% style availability figures.
  • LLM VRAM Requirement Calculator
    Estimate the GPU VRAM (GB) needed to run or serve a large language model from its parameter count, precision, and overhead factor.
  • PC Power Supply (PSU) Wattage Calculator
    Estimate the right PSU wattage for your PC build. Add CPU, GPU, RAM, storage and fans to get a recommended power supply size with 20% headroom.
  • Video File Size Calculator
    Estimate video file size from total bitrate and clip length. Get the result in MB and GB instantly for export, upload, and storage planning.

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