Solve Problems. Succeed.
Free, practical tools designed to remove obstacles and help you get things done.
What Are You Working On?
Home Improvement Project
Calculate insulation, size HVAC systems, check wiring, and plan financing.
Prep Meals & Cook
Scale recipes, convert units, and calculate nutrition for any occasion.
Manage My Finances
Pay off debt, grow investments, and plan for retirement.
Design for the Web
Build color palettes, check accessibility, and optimize images.
Focus & Unwind
Boost productivity with timers, then relax with ambient sounds.
Play & Practice Music
Generate tones, keep tempo, tune instruments, learn chords, and train your ear.
Prepare Documents
Merge, compress, and sign PDFs, then polish your text.
Make Better Decisions
Weigh options, clarify values, and think through decisions before you commit.
Plan & Organize
Count down to events, calculate dates, and keep time on your side.
Print & Create
Design custom calendars, coloring pages, craft paper, and printable sheets.
Popular Tools
Online Tone Generator
Free online tone generator, sine wave generator, and pitch generator. Play pure tones from 20 Hz to 20 kHz with 6 waveforms, frequency sweep mode, and WAV export.
Visual Timer
See time run out with color-coded countdown. 4 modes: circle, bar, sand, text. Fullscreen, classroom presets, keyboard shortcuts.
Nutrition Label Generator & Recipe Analyzer
Free nutrition label generator from any recipe — create FDA-compliant nutrition facts in 4 formats with macro breakdowns, daily value charts, and allergen detection.
Duct Size Calculator
Calculate HVAC duct dimensions from airflow (CFM). Supports round and rectangular ducts with velocity validation.
Crowd Food Calculator
Calculate food quantities per guest count for any event. Supports sit-down dinners, buffets, BBQs, and appetizer parties with 6 event presets and adjustments for kids, appetite, and duration.
Decimal Feet Converter
Convert between feet-and-inches (with fractions) and decimal feet. Bidirectional with quick reference table.
Grade Calculator
Calculate grades, weighted averages, final exam scores, and grade curves instantly.
Binaural Beats Generator
Create binaural beats for sleep, relaxation, focus, and meditation with adjustable frequencies and session timer.
Time Zone Converter
Find the time difference between any two cities. Convert times across 400+ time zones with DST handling, UTC offsets, and meeting planner.
Spectra Image Generator
Generate royalty-free images with 237 generative art styles. Perfect for backgrounds, placeholders, and creative projects.
What's New
Box Fill Calculator
Calculate electrical box fill in cubic inches and check it against NEC 314.16 — conductors, clamps, devices, and grounds included.
Conduit Fill Calculator
Calculate conduit fill percentage and find the minimum conduit size for your conductors using NEC Chapter 9 tables.
Dwelling Load Calculator
Calculate a single-family dwelling service load and the minimum service size using the NEC Article 220 standard and optional methods.
Pet Age Calculator
Convert your pet's age to human years using veterinary science — dogs (by size), cats, rabbits, ferrets, guinea pigs and hamsters.
Tools
Cooking
17 tools17 tools: conversions, baking, meat temps, brining, food cost, coffee & nutrition analysis
Decisions
9 toolsExplore, decide, and follow through
Developer
19 toolsJSON formatter, Base64, URL encoder & hash tools
Engineering
17 toolsHVAC and electrical engineering — code-referenced, browser-based
Health & Fitness
5 toolsBMI, calorie, macro & body fat calculators
Image Tools
14 toolsConvert, resize, compress & edit images privately
Math
8 toolsPercentage, ratio & everyday math calculators
Music
12 toolsMetronome, BPM tapper, tuner & tone generator
PDF Tools
11 toolsMerge, split, compress & edit PDFs privately
Printables
5 toolsPaper templates, music staff, coloring pages, calendars & craft grids
Text
4 toolsWord counter, case converter & text diff
Time
6 toolsWorld clock, time zones & date calculators
Timers
6 toolsPomodoro, stopwatch, countdown & interval timers
Money
Currency & Exchange
1 calculatorCurrency conversion tools with live exchange rates
Loans & Debt
5 calculatorsMortgage, loan, and debt payoff calculators
Investments & Retirement
4 calculatorsInvestment growth, ROI, and retirement planning tools
Budget & Planning
2 calculatorsBudgeting tools and financial planning calculators
Business Documents
1 calculatorCreate invoices, estimates, and business documents
I compress client images and sign contracts without uploading anything to sketchy sites. Everything stays on my laptop.Image Compressor →
The Pomodoro timer got me through finals. Simple, clean, just focus.Pomodoro Timer →
Finally, dev tools that just work. I keep these bookmarked for quick debugging.Developer Tools →
Converting grams to cups used to mean hunting through recipe blogs. Now it takes 2 seconds.Grams to Cups →
The text diff tool saved me hours reviewing document changes. It highlights every edit instantly.Text Diff →