Tools
Blog
Submit

Tools
Blog
Submit

Discover the best free tools on the internet.

Tools
Categories
Tags
Blog
Submit a Tool

Home/Tools

Browse Tools

6829 tools available

⌘K

Categories

🔄

Math & Numbers

249 tools

🩺

Our Medical & Clinical category serves as a vital resource hub featuring 210 professional tools tailored for healthcare practitioners and clinical students. This comprehensive library includes precise medication dosage calculators, validated clinical scoring systems, and essential medical reference utilities. From determining renal function to evaluating cardiovascular risk scores, our resources support diagnostic accuracy and clinical workflows in fast-paced medical environments.

210 tools

🏠

Everyday Tools

203 tools

📈

Statistics

194 tools

🎲

Generators

188 tools

💻

Developer

The Developer category contains 165 specialized utilities engineered to streamline your coding workflow and reduce debugging time. This suite includes high-performance code formatters, interactive API testers, regular expression builders, and rigorous JSON validators. Whether you are troubleshooting a complex regex pattern or verifying the structure of a large dataset, these developer-centric tools provide immediate, accurate feedback to help you maintain high code quality.

165 tools

📐

Materials & Measurement

165 tools

💰

Personal Finance

Our Personal Finance category offers an extensive library of 163 tools designed to give you complete control over your financial future. This collection features detailed budget planners, sophisticated loan calculators, automated savings trackers, and precise tax estimators. Whether you are calculating the long-term cost of a mortgage, comparing credit card repayment strategies, or finding ways to reduce monthly expenses, these free financial utilities offer the data necessary for informed money management.

163 tools

🏗️

Construction

156 tools

📏

Length & Distance

151 tools

⚡

Electricity & Electronics

149 tools

📡

Electromagnetic

149 tools

🧮

Miscellaneous Calculators

148 tools

🌡️

Fluids & Thermal

134 tools

⚾

Sports

126 tools

⚡

Energy & Power

123 tools

🛡️

Security

119 tools

📈

Investing & Markets

116 tools

🧬

Biology

106 tools

⚗️

Chemistry

106 tools

🔄

Data Format Converters

102 tools

🕐

Time & Date

100 tools

🔢

Number Theory & Sequences

95 tools

🏦

Loans & Mortgages

91 tools

✨

Code Formatters & Validators

90 tools

👨‍🍳

Cooking

89 tools

🎨

Color Tools

88 tools

🎨

HTML & CSS Tools

84 tools

🔐

Encoders & Decoders

82 tools

🏥

Health & Fitness

79 tools

⚖️

Weight Conversion

79 tools

🚗

Automotive & Transportation

76 tools

💱

Currency

71 tools

📊

Business & Investment

The Business & Investment category provides 69 specialized tools to support strategic financial decision-making and venture growth. This collection includes professional Discounted Cash Flow (DCF) calculators, Return on Investment (ROI) tools, and business valuation models essential for investors and founders. Whether you are performing due diligence on a new acquisition or planning your next expansion phase, our comprehensive suite of analytical instruments delivers the clarity required for high-stakes business environments.

69 tools

🔊

Optics & Sound

69 tools

🤰

Pregnancy & Pediatrics

65 tools

🌡️

Temperature Conversion

64 tools

🔢

Number Conversion

63 tools

🏖️

Retirement & Savings

63 tools

➗

Fractions, Percentages & Ratios

61 tools

💵

Salary & Income

58 tools

📝

Text & String Tools

57 tools

🔤

Algebra & Equations

57 tools

🖼️

Image Resolution

56 tools

💪

Body Metrics & Fitness

Our Body Metrics & Fitness category features 54 free tools designed to help you quantify and track your physical health goals. From precision BMI and body fat calculators to daily calorie counters and comprehensive fitness trackers, these resources provide data-driven insights into your physical condition. Whether you are an athlete optimizing performance or an individual starting a wellness journey, our tools offer the objective measurements needed to monitor progress accurately.

54 tools

📐

Trigonometry

53 tools

🏠

Housing & Real Estate

52 tools

🧪

Volume Conversion

49 tools

🏡

Home & Household

44 tools

🧾

Tax Calculators

41 tools

🧮

Linear Algebra & Vectors

39 tools

📐

Area Conversion

38 tools

🔭

Astronomy & Space

35 tools

💼

Career

34 tools

🥗

Nutrition & Diet

34 tools

💊

Drug Dosage & Medication

34 tools

📝

Text & Encoding

33 tools

🔧

Structural & Materials Engineering

33 tools

📷

Photography & Video

30 tools

🌐

Network

28 tools

💾

Data Storage Conversion

27 tools

🎵

Music & Audio

24 tools

🔤

Typography

22 tools

📋

IT Planning

21 tools

💳

Debt & Credit

21 tools

👕

Clothing Sizes

20 tools

🎮

Fun & Games

17 tools

📄

Resume & Cover Letter

15 tools

👨‍👩‍👧

Family & Parenting

15 tools

✅

Compliance

14 tools

💬

Communication & Media

13 tools

🎓

Grade Calculators

10 tools

💼

Business

10 tools

🔐

Blockchain & Cryptocurrency Security

5 tools

📄

PDF Tools

4 tools

🎮

Fun & Viral

3 tools

🌍

Economics & Inflation

2 tools

All Tools

CI/CD Security Checklist

Assess CI/CD pipeline security across secrets management, SAST/DAST, artifact signing, SLSA framework, and deployment controls.

1 option✅ Compliance

Cloud Security Self-Assessment (iCSAT)

Interactive cloud security benchmark for AWS, Azure, and GCP with instant remediation guidance and compliance insights

1 option✅ Compliance

Credit Card Cashback Maximizer

Find the best card for groceries, gas, dining, travel and maximize rewards with optimal cashback strategy

1 option💳 Debt & Credit

Credit Card Rewards Optimizer Tool

Optimize your credit card rewards strategy with our free tool. Find the best approach for your situation.

1 option💳 Debt & Credit

High-Yield Savings Impact Tool

Manage your high-yield savings impact with our free tool. Take control of your finances and reach your goals.

1 option🏖️ Retirement & Savings

Overdraft Fee Avoidance Calculator

Managing bank account balances effectively requires constant vigilance to avoid the high costs associated with overdrawing. Banking customers often face steep penalties when transactions exceed available funds, making it essential to understand the financial impact of these occurrences. The calculator provides a clear breakdown of potential costs and helps users identify patterns in their spending that could lead to unnecessary charges. Users input their transaction history and account limits to see how specific financial choices impact their bottom line. By quantifying the cumulative expense of overdraft events, the interface demonstrates the immediate and long-term savings achieved through proactive balance management. This analytical perspective empowers account holders to adjust their withdrawal schedules and spending priorities, ensuring they keep more of their money rather than losing it to bank penalties.

1 option💰 Personal Finance

Simple Savings Calculator (Test)

Planning for future financial milestones becomes more manageable with a straightforward way to project wealth accumulation. Investors and everyday savers use a simple savings calculator to estimate how much their money grows over a specific timeframe based on varying interest rates and contribution schedules. By inputting basic variables like starting balance and expected annual returns, users gain immediate clarity on their potential portfolio value. Visualizing the long-term impact of consistent habits helps individuals stay motivated toward their retirement or short-term purchase goals. The calculator provides a clear breakdown of interest earned versus principal contributions, highlighting the power of compounding. This clarity allows for better budgeting decisions and more realistic expectations when mapping out a path to financial security.

1 option🏖️ Retirement & Savings

Blockchain Explorer Links Tool

Blockchain Explorer Links simplifies the process of tracking cryptocurrency transactions and wallet activity by providing direct access to major blockchain explorers. Users can quickly navigate to the specific network required to verify on-chain data, whether they are monitoring transfers, checking token balances, or auditing smart contract interactions. This utility serves as a central hub for investors and developers who interact with multiple protocols and need a reliable way to view real-time ledger information. Maintaining security and transparency in decentralized finance requires easy access to immutable transaction records. By streamlining the path to various block explorers, the tool helps users confirm the status of their digital assets without manually searching for individual network gateways. It provides a standardized interface to ensure that critical financial data remains accessible and verifiable across the evolving cryptocurrency landscape.

1 option🔐 Blockchain & Cryptocurrency Security

Gas Fee Calculator

Calculate your gas fee with our free online tool. Get accurate results instantly. No signup required.

1 option🔐 Blockchain & Cryptocurrency Security

Break-Even Ad Spend Calculator

Digital marketers and business owners often struggle to determine exactly how much they can afford to spend on customer acquisition before a campaign becomes unprofitable. The Break-Even Ad Spend Calculator provides essential clarity by determining the precise point where advertising costs align with profit margins. By inputting core metrics like product price and production costs, users can instantly identify their maximum allowable cost per acquisition and the minimum return on ad spend required to avoid a financial loss. Using these insights allows advertisers to set more realistic performance targets and avoid overspending on competitive keywords or expensive social media platforms. It serves as a vital planning resource for evaluating the viability of new marketing channels or adjusting existing strategies to protect bottom-line revenue. This data-driven approach ensures that advertising budgets are managed with precision, helping to sustain healthy growth through informed financial decision-making.

1 option📊 Business & Investment

Operating Expense Calculator

Calculate monthly and annual operating expenses for your business. Track overhead costs and operating expense ratio. Free OpEx calculator.

1 option📊 Business & Investment

Startup Runway Calculator

Founders and finance teams use the Startup Runway Calculator to determine exactly how many months of operation remain before cash reserves are depleted. By inputting current cash on hand alongside monthly revenue and expenses, users gain a clear view of their net burn rate. This visibility helps leadership teams make informed decisions about hiring, marketing spend, and the timing of their next fundraising round. Beyond simple tracking, the calculator assists in financial modeling by allowing users to test different cost-cutting or growth scenarios. Adjusting variables like monthly overhead or projected revenue growth shows the immediate impact on the company’s lifespan. Having these insights allows startups to pivot early, extend their runway during lean periods, and maintain a sustainable path toward profitability.

1 option📊 Business & Investment

Degree vs Certification ROI Tool

Compare the full investment, opportunity cost, and long-term earnings impact of traditional degrees versus bootcamps, certifications, and associate programs.

1 option💼 Career

Net Pay Calculator

Determining actual take-home pay is essential for effective budgeting and long-term financial planning. The Net Pay Calculator processes gross salary information alongside various tax obligations and deductions to provide a precise estimate of the amount that appears on a final paycheck. It factors in federal and state income taxes, Social Security, and Medicare contributions, giving users a clear view of their actual disposable income. Professionals considering new job offers or evaluating their current compensation find this resource particularly valuable for understanding the real-world impact of salary changes. By inputting specific pay cycles and filing statuses, employees can better anticipate their monthly cash flow. This clarity helps individuals make informed decisions about savings goals, housing costs, and other recurring expenses based on their true earnings rather than a base salary figure.

1 option💼 Career

Overtime vs Side Hustle Tool

Deciding between picking up extra shifts at work or launching a secondary income stream requires a clear understanding of the financial trade-offs. Professionals often face the dilemma of whether to invest their spare time into guaranteed overtime pay or the speculative but potentially scalable nature of a side gig. This comparison helps users evaluate these two paths by analyzing the immediate hourly returns and long-term potential of each option. Workers input their current wage and overtime multipliers to see exactly how much an extra hour of company time is worth. By contrasting these figures against the projected earnings and startup costs of a side business, individuals can identify which path offers the best return on their effort. This data-driven approach removes the guesswork, allowing users to choose the most efficient way to reach their financial goals based on their specific career circumstances and available hours.

1 option💼 Career

Part-Time Job ROI Tool

Evaluating the true value of a part-time position requires looking beyond the hourly wage to understand the actual financial impact. The Part-Time Job ROI Tool helps individuals analyze the relationship between their earnings and the associated costs of employment. By factoring in variables like transportation expenses, required equipment, and time spent outside of clocked hours, it provides a clearer picture of whether a specific role aligns with personal financial goals. Using this calculator allows workers to compare different job offers or assess the viability of their current side hustle. It accounts for hidden drains on income that often go overlooked, such as commuting time and professional upkeep. This data-driven approach assists in determining if the net gain justifies the effort and time commitment required. Users gain the insight needed to prioritize opportunities that offer the best effective rate of return for their unique circumstances.

1 option💼 Career

Side Hustle ROI Calculator

Entrepreneurs and freelancers can evaluate the potential profitability of new ventures using the Side Hustle ROI Calculator. By inputting estimated startup costs, ongoing expenses, and projected earnings, users gain a clearer picture of when their secondary income stream will become profitable. It serves as a practical resource for anyone looking to balance their time and financial investments against expected returns. Analyzing the efficiency of a side project helps individuals prioritize their efforts and avoid sinking resources into low-yield activities. The calculator simplifies complex financial projections, allowing for quick comparisons between different business ideas. This data-driven approach supports more informed decisions about where to allocate time and capital for maximum growth.

1 option💼 Career

Screenshot of Credit Score Impact Calculator - Credit Simulator

← Prev 1...21 22 23...285 Next →

Browse Tools

Categories

General Conversion

Classical Mechanics

Physics

Geometry & Shapes

Math & Numbers

Medical & Clinical

Everyday Tools

Statistics

Generators

Developer

Materials & Measurement

Personal Finance

Construction

Length & Distance

Electricity & Electronics

Electromagnetic

Miscellaneous Calculators

Fluids & Thermal

Sports

Energy & Power

Security

Investing & Markets

Biology

Chemistry

Data Format Converters

Time & Date

Number Theory & Sequences

Loans & Mortgages

Code Formatters & Validators

Cooking

Color Tools

HTML & CSS Tools

Encoders & Decoders

Health & Fitness

Weight Conversion

Automotive & Transportation

Currency

Business & Investment

Optics & Sound

Pregnancy & Pediatrics

Temperature Conversion

Number Conversion

Retirement & Savings

Fractions, Percentages & Ratios

Salary & Income

Text & String Tools

Algebra & Equations

Image Resolution

Body Metrics & Fitness

Trigonometry

Housing & Real Estate

Volume Conversion

Home & Household

Tax Calculators

Linear Algebra & Vectors

Area Conversion

Astronomy & Space

Career

Nutrition & Diet

Drug Dosage & Medication

Text & Encoding

Structural & Materials Engineering

Photography & Video

Network

Data Storage Conversion

Music & Audio

Typography

IT Planning

Debt & Credit

Clothing Sizes

Fun & Games

Resume & Cover Letter

Family & Parenting

Compliance

Communication & Media

Grade Calculators

Business

Blockchain & Cryptocurrency Security