All Tools & Calculators
💵 Financial
Salary to Hourly Converter
Convert salary to hourly rate with PTO and benefits
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Stripe Fee Calculator
Calculate payment processing fees instantly
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Split Bill Calculator
Fairly split restaurant and group bills
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Tip Calculator
Calculate tip and split bill among friends
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Simple Interest Calculator
Calculate simple interest on loans and investments
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Compound Interest Calculator
Project investment growth with compound interest
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Car Payment Calculator
Estimate monthly auto loan payments
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Home Affordability Calculator
How much house you can afford based on income
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Amortization Calculator
Loan amortization schedule with extra payments
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VA Loan Calculator
Estimate monthly VA home loan payments
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Invoice Gross-Up Calculator
Calculate gross amount to cover processing fees
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Fuel Cost Calculator
Estimate trip fuel expenses and cost per passenger
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Percentage Calculator
Find percentages, what percent, and reverse percentages
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Real Estate ROI Calculator
Calculate monthly mortgage, cap rate, cash-on-cash return & 30-year equity projection
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SaaS Churn & LTV Calculator
Model churn, LTV, LTV-to-CAC, and 12-month MRR projection with live charts
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Sales Commission & Tiered Bonus Tracker
Track tiered commissions, quota attainment progress, and total variable compensation
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Cold Email Deliverability & ROI Modeler
Model outbound pipeline: delivery, opens, replies, meetings, close rates, and total revenue
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Digital Product Pricing & Tier Optimizer
Van Westendorp pricing model with intersection graph, acceptable price range, and Basic/Pro/Enterprise tiers
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💻 Developer
Discord Timestamp Generator
Create time codes for Discord in 7 formats
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Time Zone Meeting Planner
Plan meetings across global time zones
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Percentage Change Calculator
Calculate percentage increase and decrease
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Cron Expression Builder
Build cron schedules visually with dropdowns
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API Rate Limit Calculator
Check API usage against rate limits and costs
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AI Token Cost Calculator
Estimate AI token costs across models
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JSON CSV XML YAML Converter
Convert between data formats instantly
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Password Strength Checker
Test password strength with entropy and crack time
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Base64 Encoder Decoder
Encode or decode text/files to and from Base64
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Color Converter
Convert between HEX, RGB, HSL, CMYK and more
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URL Encoder Decoder
Encode and decode URL-encoded strings
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GPA Calculator
Calculate semester and cumulative GPA
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⚡ Electrical
Cable Voltage Drop Calculator
Calculate minimum wire size by voltage drop
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Conduit Fill Calculator
NEC conduit fill capacity calculator
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Parallel Resistance Calculator
Total resistance for resistors in parallel or series
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Battery Life Calculator
Estimate battery runtime for any device
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kW to Amps Calculator
Convert between kilowatts and amps for 1/3 phase
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Wire Ampacity Calculator
NEC wire ampacity based on gauge and conditions
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❤️ Health & Fitness
Macro Calculator
Calculate daily protein, carbs, and fat needs
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Calorie Calculator
Calculate daily calorie needs with Mifflin-St Jeor
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BMI Calculator
Calculate Body Mass Index with WHO categories
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Body Fat Calculator
Estimate body fat by Navy circumference method
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Ideal Weight Calculator
Calculate ideal body weight by height and frame size
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Due Date Calculator
Estimate due date by LMP or conception
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Sleep Calculator
Best bedtime and wake-up by sleep cycles
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Meal Prep Macro Divider
Distribute daily macros across meals
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Dog Age Calculator
Convert dog years to human years by breed size
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Age Calculator
Calculate exact age in years, months, days and more
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🏠 Home Improvement
Paint Calculator
Estimate gallons of paint needed for any room
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Concrete Calculator
Estimate cubic yards of concrete for any project
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Flooring Calculator
Estimate flooring material for any room shape
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Square Footage Calculator
Calculate area in square feet for any room shape
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Sod Calculator
Calculate how much sod you need for your lawn
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🌟 Lifestyle
Candidate Policy Tracker
Compare 3 fictional candidates across 7 policy areas. Side-by-side comparison with color-coded agreement highlighting.
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Commute Cost Calculator
Calculate true total cost of your daily commute
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Date Difference Calculator
Calculate exact days between two dates
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Debate Scorecard
Score 3 candidates on Clarity, Policy Depth, Charisma, Rebuttals, and Time Management. SVG chart and ranked results.
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Democracy Index Dashboard
Rate 10 countries across 5 democracy metrics. Visual gauges, ranking table, and country comparison tool.
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Election Countdown Timer
Track days, hours, minutes, and seconds until any election. Animated countdown with progress bar and share feature.
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Election History Browser
Browse fictional elections from 2000-2020 with candidate details, vote counts, and search filters.
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Election Integrity Checklist
20-item checklist across 5 categories. Track progress, get a score rating, and monitor election security readiness.
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Electoral College Simulator
Click states to assign electoral votes to candidates. Live 270-vote tracking with a full interactive US state grid.
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Electoral FAQ Chatbot
Get answers to 20 common voting questions. Rule-based chatbot with typing animation and suggested questions.
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Electoral System Explainer
Learn 6 electoral systems through interactive cards. Compare FPTP, PR, Ranked Choice, and more with pros/cons.
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EV Charging Calculator
Estimate EV charging time and cost
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Exit Poll Simulator
Generate fictional exit poll data by gender, age, income, and education. Stacked bar charts with margin of error.
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Gerrymandering Simulator
See how redistricting changes election outcomes on an 8x8 grid. Compare compact vs gerrymandered boundaries.
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Job Offer Comparator
Compare total compensation side by side
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Overtime Calculator
Calculate overtime pay at 1.5x and 2x rates
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Political Ideology Test
Rate 20 statements to map your position on the 2D political compass. Find where you land on Economic and Social axes.
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Political Party Quiz
Answer 10 questions to discover which fictional party aligns with your views. Match percentage for all 4 parties.
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Seat Projection Calculator
Enter party vote percentages to see how seats would be distributed. Compare FPTP and proportional representation with a parliament diagram.
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Speech Tone Analyzer
Paste a political speech to analyze sentiment, reading ease, passive voice, and emotional language. 5 metrics with bars.
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Swing State Tracker
Track 7 battleground states with polling averages, electoral votes, and lean indicators. Path to 270 visualization.
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Time Duration Calculator
Calculate hours and minutes between two times
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Voter Guide Quiz
Answer 12 questions on key issues to find which candidate matches your views. See your percentage match with 3 candidates.
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Voter Turnout Visualizer
Interactive bar chart comparing turnout by age group across election years. Trend line and year-selector included.
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Voting Method Comparison
Compare 5 voting methods using the same ballot data. See how Plurality, Ranked Choice, and others produce different winners.
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Voting Rights Explorer
Explore 10 states' voting rights scores across 5 metrics. Color-coded breakdowns by Voter ID, Early Voting, and more.
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Ohm's Law Calculator
Solve for voltage, current, resistance, or power using V=IR. Enter any two values and get instant results.
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Wire Size Calculator
Determine the correct AWG gauge for your electrical project based on current, length, and voltage.
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Voltage Drop Calculator
Calculate voltage drop across conductors for AC/DC circuits per NEC standards.
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Power Factor Calculator
Calculate PF, reactive power (kVAR), apparent power (kVA), and capacitor size for PF correction.
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Motor FLC Calculator
Calculate full load current (FLA) for single and three-phase AC motors from HP and voltage.
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Conduit Fill Calculator
Calculate how many wires fit in EMT, PVC, and IMC conduit per NEC Chapter 9.
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Transformer KVA Calculator
Size single and three-phase transformers based on load requirements.
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Electrical Load Calculator
Calculate total electrical load for residential panels per NEC Article 220.
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Battery Bank Calculator
Size battery banks for off-grid and backup solar systems.
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Fault Current Calculator
Calculate available short circuit current at transformer secondary and panel.
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Capacitor Calculator
Calculate capacitor energy storage, RC time constants, and series/parallel combinations.
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Inductor Calculator
Calculate air-core coil, toroid, and solenoid inductance. Find LC resonant frequency.
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3-Phase Power Calculator
Calculate kW, kVA, kVAR, and current for balanced three-phase systems.
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Electricity Cost Calculator
Estimate your monthly and annual energy bills by appliance with CO₂ impact.
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LED Savings Calculator
Compare LED vs incandescent energy costs, payback period, and CO₂ savings.
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Resistor Color Code Calculator
Decode 4, 5, and 6 band resistors to get resistance value and tolerance.
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Solar Sizing Calculator
Size your solar PV system based on monthly usage and location sun hours.
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GFCI Circuit Planner
Interactive NEC GFCI/AFCI requirement checker by room type.
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Frequency EMF Calculator
Convert frequency to wavelength, calculate antenna lengths, and estimate EMF exposure.
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Panel Schedule Builder
Create professional electrical load schedules for permit applications.
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