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120 Day Calculator
Calculate the calendar date that falls 120 days after any start date, with an option to include the start date in the count.
100 Day Calculator
Calculate the calendar date that falls a set number of days after any start date, with an option to include the start date in the count.
0-60 Calculator
Estimate 0-60 mph acceleration time from engine power, vehicle weight, drivetrain, tires, and road conditions.
Christmas Tree Footprint Calculator
Compare carbon footprint of natural, artificial, and low-waste Christmas tree options including transport and disposal.
Wind Turbine Profit Calculator
Calculate daily wind turbine profit from energy output, electricity price, and operating costs with optional power generation estimates.
Wind Turbine Calculator
Calculate wind turbine power output, efficiency, torque, RPM, and revenue for horizontal or vertical axis turbines.
Water Demand Calculator
Estimate average, maximum, and peak water demand for a population using liters or gallons per capita per day.
Vegan Footprint Calculator
Calculate animal lives, water, grain, forest land, and CO2 saved based on how long you have been vegan.
Tree Benefits Calculator
Estimate oxygen production, carbon dioxide absorption, water evaporation, and energy savings from trees by species, size, and count.
Tap Water Calculator
Compare bottled water costs with tap water and calculate long-term savings over 5 to 50 years.
Solar Panel Wattage Calculator
Calculate recommended solar panel wattage from annual electricity use, solar hours, and environmental factors.
Solar Panel Calculator
Estimate solar array size, number of panels, and roof area needed based on electricity consumption and location.
Shannon Diversity Index Calculator
Calculate Shannon-Wiener diversity index, species richness, and evenness from population counts.
Reduce Your Plastic Calculator
Set plastic reduction goals and see yearly savings in plastic weight, CO2, energy, and environmental impact.
Plastic Footprint Calculator
Calculate your yearly plastic footprint from bottles, bags, packaging, and disposable items with weight estimates.
Plug-in Hybrid Economy Calculator
Compare plug-in hybrid fuel costs with a regular car and calculate real-world MPG and monthly savings.
Passive House Savings Calculator
Compare regular, energy-efficient, and passive house construction costs and calculate heating savings payback period.
Olympic Games Sustainability Calculator
Evaluate Olympic Games sustainability across ecological, social, and economic dimensions using the Olympic Sustainability Model.
Meat Footprint Calculator
Calculate the environmental impact of meat consumption including CO2 emissions, water use, land use, and pollution by meat type.
Lotka Volterra Calculator
Simulate predator-prey population dynamics using Lotka-Volterra equations with equilibrium points and oscillation period estimates.
Kaya Identity Calculator
Calculate CO2 emissions using the Kaya identity equation from population, GDP per capita, energy intensity, and carbon footprint factors.
Hydroelectric Power Calculator
Estimate hydroelectric power output for dam, run-of-river, and tidal turbines with revenue projections based on flow rate and head.
Hand Drying Footprint Calculator
Compare the carbon footprint of hand drying methods including paper towels, cotton rolls, and electric dryers for offices and public restrooms.
Global Plastic Policy Calculator
Compare plastic waste reduction from different policy strategies including bans, taxes, recycling, and extended producer responsibility by region.
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39 tools
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7 tools
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22 tools
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80 tools
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56 tools
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255 tools
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31 tools
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45 tools
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32 tools
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100 tools
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127 tools
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46 tools
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19 tools
Math Calculators
401 tools
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159 tools
Name Generators
10 tools
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25 tools
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18 tools
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51 tools
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3 tools
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169 tools
QR & Barcode Tools
5 tools
Random Generators
59 tools
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27 tools
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21 tools
Statistics & Data Analysis
48 tools
Text Editors & Viewers
6 tools
Text Processing
93 tools
Time & Date
117 tools
Travel & Automotive
21 tools
Unicode Tools
43 tools
Unit Converters
107 tools
Utilities
33 tools
Weather & Environment
7 tools
Web & SEO Tools
23 tools
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On the roadmap
Coming Soon
New mini-tools we're building next.
Html to Jsx
Convert HTML file to JSX online
Instagram Reel Downloader
Download and save Instagram videos locally with our Instagram Reel Downloader. No signup required.
Instagram Reel Thumbnail Downloader
Save thumbnails from any reel
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