Free Online Calculators & Tools
Finance, Fitness & Daily Life
A suite of engineering-grade Free Online Calculators & Tools for tax, finance, construction, and health. No sign-up required.
Last updated: February 2026What is Ultimate Info Guide?
Ultimate Info Guide is a privacy-focused platform offering accurate online calculators for tax, finance, business, health, and daily life. Each tool is built using transparent formulas and regularly updated to match current regulations.
Money, Tax & Salary
Take Home Pay
After-tax income analysis
1099 Tax Calc
Freelance & contract tax
Freelance Tax
Self-employed estimator
No Tax Overtime
Proposed tax cut calc
DoorDash Tax
Driver tax estimator
Hourly to Salary
Wage conversion tool
Child Tax Credit
Eligibility & Amount
Budget Tracker
Daily expense tracking
Split Bill
Group expense divider
Commute Cost
Fuel & time expense
Subscription Cost
Monthly recurring
No Tax on Tips
Service industry savings
Prorated Salary
Partial month pay
Loans, Mortgage & Property
Mortgage Payoff
Amortization schedule
HELOC Calculator
Home equity line
Estate Tax Tool
Federal & State exemptions
Credit Card Payoff
Debt-free timeline
Car Tax Deduction
Business vehicle write-off
Loan Early Payoff
Interest savings calc
Cap Rate Calc
Real estate ROI
Retirement Risk
Portfolio survival rate
Injury Settlement
Claim value estimator
Business & Creator Tools
Amazon FBA
Profit margin analysis
Etsy Fee Calc
Seller costs breakdown
TikTok Money
Creator fund estimator
Business Days
Working days counter
Word to Pages
Book length estimator
UUID Generator
Bulk V4 ID creation
Health & Lifestyle
Calories Burned
Daily energy expenditure
Daily Steps Goal
Age-based benchmarks
Real Age Calc
Detailed chronology
Steps to Calories
Walk energy conversion
Walking Time
Time vs Distance
Rucking Calories
Weighted walk burn
Starbucks Calc
Drink calorie counter
Garden Calculator
Planting planner
Relationship Score
Compatibility check
Image & Social Media
Image Resizer
Compress & Resize
Passport Photo
US Standard Cropper
YT Banner Resizer
Crop to 2560×1440
Insta Resizer
No-crop image fitter
Safe Zone Check
Overlay for Reels/TikTok
AI Image Detector
Forensic analysis
Construction & Engineering
Concrete Calculator
Bags needed for slabs
Retaining Wall
Blocks & materials needed
Deck Cost Est.
Composite vs Wood
Wallpaper Calc
Rolls needed with repeat
Epoxy Resin Calc
Volume for river tables
Freight Class
Shipping density calc
3D Print Cost
Filament & energy cost
AI, Tech & Learning Hub
Fabric Pricing Guide
Capacity & cost planning
Fabric Learning Series
Step-by-step masterclass
Deepfake Detection
Security guide
Creator Toolkit
Curated free resources
Our Commitment to Accuracy & Privacy
Ultimate Info Guide is maintained by independent researchers and engineers using publicly available government and industry standards (IRS, CDC, and financial institutions). We prioritize transparency, data privacy, and regular updates to reflect current regulations.
Our tools are built using data and formulas from official institutions:
Frequently Asked Questions
Are these calculators accurate?
Yes. All calculators use verified formulas based on official government and industry guidelines.
Do you collect user data?
No. All calculations run in your browser (Client-Side). No personal data is stored or transmitted.
Are these tools free?
Yes. All tools are 100% free without registration or credit card requirements.
Can I use them for official decisions?
They are for estimation only. Consult licensed professionals for legal or medical decisions.
The tools and content on Ultimate Info Guide are for informational and educational purposes only. They do not constitute professional financial, tax, legal, or medical advice. While we strive for accuracy using official benchmarks (IRS, CDC), results should be verified with a qualified professional before making significant decisions. We do not store any user data.