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All 89 tools
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89 tools
Construction & Measurement 15
Asphalt Calculator
Estimate asphalt volume, weight, waste, and material cost for a rectangular paving area.
Board Foot Calculator
Calculate lumber volume in board feet from thickness, width, length, and quantity.
Concrete Calculator
Estimate concrete volume in cubic yards and add a configurable waste allowance.
Decking Calculator
Estimate deck boards and linear footage using deck dimensions, board width, gap, and waste.
Drywall Calculator
Estimate drywall sheets, joint compound, screws, waste, and optional sheet cost for a room.
Fence Material Calculator
Estimate fence sections, posts, rails, and pickets from run length and spacing.
Flooring Calculator
Estimate flooring area, waste allowance, and boxes required for a room.
Gravel Calculator
Estimate gravel volume, weight, waste, and optional material cost for a rectangular area.
Mulch and Soil Calculator
Estimate cubic yards of mulch or soil from area, depth, and waste allowance.
Paint Coverage Calculator
Estimate paintable wall area and gallons needed after subtracting doors and windows.
Paver Calculator
Estimate paver count, base aggregate, bedding sand, waste, and optional paver cost.
Roofing Calculator
Estimate roof area, roofing squares, and shingle bundles from footprint and pitch.
Square Feet to Linear Feet Calculator
Convert square feet or square yards to linear material length using the required material width.
Stair Calculator
Estimate stair riser count, actual riser height, treads, total run, and stringer length.
Tile Calculator
Estimate tiles and boxes required from surface and tile dimensions with waste.
Converters 9
Base64 Encoder Decoder
Encode/decode Base64 and preview images.
CSV to JSON Converter
Turn CSV data into JSON with options.
Hex to Decimal Converter
Convert hexadecimal and decimal values with an interactive positional-value explanation.
Image Resizer
Resize images without uploading to a server.
Liters to Ounces Converter
Convert liters to US or imperial fluid ounces with common-value reference tables.
PDF to JPG Converter
Convert PDF pages to images directly in your browser.
Sitemap Validator
Validate XML sitemap and robots basics.
Text Case Converter
Change text case in one click.
Unit Converter
Convert common units instantly.
Energy & Electrical 5
Battery Runtime Calculator
Estimate ideal and adjusted battery runtime from capacity, voltage, load, efficiency, and usable depth.
EV Charging Cost Calculator
Estimate energy drawn, per-charge cost, monthly charging cost, and cost per mile for an EV.
Electricity Cost Calculator
Estimate appliance energy use and daily, monthly, and annual electricity cost.
LED Savings Calculator
Compare old and LED lighting energy cost, annual savings, and simple payback period.
Watts to Amps Calculator
Convert watts to amps for DC, single-phase AC, or three-phase AC with voltage and power factor.
Everyday Calculators 3
Age Calculator
Calculate exact calendar age, total elapsed days, and time until the next birthday.
Currency Converter
Convert between major currencies.
General and Scientific Calculator
Use a fast general calculator or switch on scientific functions for trigonometry, logarithms, powers, roots, memory, and calculation history.
Finance & Investing 27
1099 Self-Employment Tax Calculator
Estimate federal self-employment tax and a quarterly planning amount for 1099 income.
APY Calculator
Convert a nominal annual interest rate and compounding frequency into annual percentage yield.
Auto Loan Calculator
Estimate an auto loan payment, amount financed, total interest, and year-by-year balance.
Balance Transfer Savings Calculator
Compare keeping credit-card debt with transferring it to a promotional APR after fees.
CAGR Calculator
Calculate compound annual growth rate from starting value, ending value, and elapsed years.
Compound Interest Calculator
Calculate compound interest with recurring contributions.
Credit Card Payoff Calculator
Estimate credit-card payoff time and interest from balance, APR, and monthly payment.
Crypto Profit Calculator
Calculate crypto profit and ROI with fees.
DCA Investment Calculator
Estimate recurring-investment growth, contributions, and gains using monthly compounding.
Debt Payoff Calculator
Estimate debt payoff timeline with avalanche or snowball strategy.
Dividend Reinvestment Calculator
Estimate portfolio growth when dividends are reinvested with editable yield and price growth.
Emergency Fund Calculator
Estimate an emergency-fund target, current gap, and time needed to reach it.
Future Value Calculator
Project the future value of a starting balance and recurring monthly contributions.
Loan Comparison Calculator
Compare monthly payment, total interest, and total cost for two fixed-rate loans.
Mortgage Affordability Calculator
Check what house fits your budget based on income and debts.
Mortgage Payment Calculator
Estimate principal, interest, property tax, insurance, PMI, HOA, and an amortization schedule.
Mortgage Refinance Break-Even Calculator
Compare old and new mortgage payments and estimate refinance break-even time.
Pay Raise Calculator
Convert a pay raise into new annual, monthly, weekly, and hourly compensation.
Paycheck After Tax Calculator
Estimate take-home pay with real state tax rules.
Percentage Calculator
Calculate percentages, increases, and changes instantly.
Rent Affordability Calculator
Estimate a monthly rent range using gross income, debts, savings goals, and a rent cap.
Retirement Planning Calculator
Project retirement savings, inflation-adjusted value, contributions, and a planning withdrawal estimate.
Savings Goal Calculator
Calculate the monthly deposit needed to reach a savings goal with an editable APY and deadline.
Savings Growth Calculator
See how your savings grow with compound interest over time.
Stock Average Cost Calculator
Calculate weighted average share cost, total shares, cost basis, and unrealized gain.
Stock Profit Calculator
Calculate stock profit, ROI, and per-share returns.
Student Loan Payoff Calculator
Estimate payoff timeline and interest savings for student loans.
Generators 1
Health 3
Seller & Business 10
Amazon Seller Fee Calculator
Estimate Amazon referral, fulfillment, storage, and product costs with editable assumptions.
Etsy Fee & Profit Calculator
Estimate Etsy fees, costs, profit, and margin with editable fee assumptions.
Freelance Hourly Rate Calculator
Estimate a sustainable freelance hourly rate from income goals, expenses, taxes, and billable hours.
Invoice Generator
Create a simple invoice and download as PDF.
Invoice Late Fee Calculator
Estimate a simple or monthly-compounded late fee from invoice balance, rate, and overdue time.
PayPal & Stripe Fee Calculator
Estimate PayPal or Stripe fees, net proceeds, or the amount to charge.
Profit Margin and Markup Calculator
Calculate profit, margin, markup, and target selling prices from cost and revenue.
Sales Tax and VAT Calculator
Add or remove sales tax or VAT using an editable rate.
Shopify Profit Calculator
Estimate Shopify order profit after product, shipping, payment, advertising, and platform costs.
eBay Fee and Profit Calculator
Estimate eBay selling fees, costs, profit, and margin with editable assumptions.
Text & Developer Tools 5
Folder to Prompt
Turn a local project folder into a structured AI prompt without uploading its files.
Keyword Density Checker
Check keyword density and top phrases in text.
Meta Tag Generator
Generate meta tags and social preview strings.
Readability Calculator
Score text readability and grade level.
Word Counter
Count words, characters, sentences, and reading time.
Time & Work 11
Business Days Calculator
Count weekdays between two dates with an optional number of excluded holidays.
Countdown Timer
Set a countdown and get notified when time is up.
Date Difference Calculator
Calculate elapsed years, months, weeks, and days between two dates.
Hours and Minutes Calculator
Add or subtract hours and minutes and show decimal-hour equivalents.
Overtime Calculator
Estimate regular and overtime pay with editable thresholds and overtime multipliers.
Pomodoro Timer
Focus with work and break intervals.
Salary to Hourly Converter
Convert annual salary to hourly, weekly, biweekly, and monthly equivalents.
Shift Differential Calculator
Estimate base pay, shift premium, overtime, and total gross shift pay.
Stopwatch
Time events with lap tracking.
Time Card Calculator
Calculate work hours, lunch deductions, overtime, and estimated gross pay.
Time Zone Meeting Planner
Compare a meeting time across common world time zones using browser time-zone data.