Free Online Tools
936 free online tools and games. Simple, fast, private. Everything runs in your browser.
All Categories 37 categories, 936 tools
Financial 97 tools
Finance Calculators
Savings, investments, debt payoff, and retirement planning calculators.
35 toolsMortgage Calculators
Free mortgage calculators for payments, affordability, refinancing, and amortization.
24 toolsReal Estate Calculators
Real estate investment analysis tools for ROI, cash flow, and cap rate.
22 toolsSalary Calculators
Paycheck, salary conversion, and freelance rate calculators.
8 toolsTax Calculators
Federal and state income tax, take-home pay, and tax comparison calculators.
8 toolsHome & DIY 81 tools
Construction Calculators
Construction materials and DIY estimating calculators.
36 toolsElectronics Calculators
Ohm's law, resistors, circuits, and power calculators.
18 toolsGarden Calculators
Gardening, soil, mulch, and lawn care calculators.
17 toolsPrinting Calculators
3D printing, ink cost, and paper size calculators.
10 toolsLifestyle 190 tools
Astrology & Mystical
Zodiac, numerology, birthstone, and mystical calculators.
10 toolsBaby Calculators
Pregnancy, due dates, feeding, and growth calculators.
21 toolsCooking Calculators
Cooking unit conversions, recipe scaling, and kitchen math.
32 toolsEvent Calculators
Party food, drinks, seating, and budget calculators.
12 toolsFitness Calculators
BMI, TDEE, macros, body fat, and workout calculators.
24 toolsLifestyle Calculators
Sizing converters, BAC, and everyday math calculators.
16 toolsPet Calculators
Pet feeding, age, health, and aquarium calculators.
22 toolsSewing Calculators
Fabric, yarn, patterns, and quilting calculators.
15 toolsSurvival & Outdoors
Fire, water purification, shelter, and first aid calculators.
9 toolsTrucking Calculators
Fuel cost, freight, and hours of service calculators.
10 toolsVehicle Calculators
Gas costs, MPG, car payments, and towing calculators.
19 toolsCreative 53 tools
STEM 392 tools
Chemistry Calculators
Molarity, pH, stoichiometry, and gas law calculators.
50 toolsEngineering Calculators
Structural, fluids, machines, and electrical engineering calculators.
59 toolsMath Calculators
Algebra, geometry, trigonometry, fractions, and matrix calculators.
117 toolsPhysics Calculators
Mechanics, thermodynamics, optics, waves, and E&M calculators.
98 toolsStatistics Calculators
Distributions, hypothesis testing, and regression calculators.
68 toolsUtility 97 tools
Date & Time Calculators
Age, date math, countdowns, and time zone calculators.
18 toolsDeveloper Tools
JSON formatter, regex tester, hash generator, and encoding tools.
16 toolsGrade Calculators
GPA, final grade, and test grade calculators.
6 toolsLogistics Calculators
CBM, pallets, and dimensional weight calculators.
6 toolsMusic Calculators
BPM, delay time, and fret position calculators.
6 toolsPhoto & Video Calculators
Aspect ratio, depth of field, and video file size calculators.
9 toolsRandomizers
Dice, coins, random pickers, and team generators.
11 toolsText Tools
Word counter, case converter, and text generators.
13 toolsUnit Converters
Length, weight, temperature, volume, speed, and more unit converters.
12 toolsNo Signup Required
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100% Free
Every tool, every download, completely free. No watermarks or paywalls.
100% Private
Everything runs in your browser. Your data never leaves your device.