Look it up. Run the math. Play a round. 🚀
IP, DNS, and WHOIS lookups with crowdsourced reports on every result. Phone-number lookups. Mortgage and health math. 186+ tools and six daily-rotating games. All browser-first, no signup, no tracking outside basic analytics.
A rotating game with the same starting board for everyone.
Snake, 2048, Reaction, Typing, Memory, Aim trainer.
Crowdsourced reports on any phone number. Spam, scam, legit.
Top IPs, domains, and phone numbers across the site.
IP and DNS tools
- What's My IP
Your public IP address, geolocation, and ISP — visible in one click.
Open tool - IP Lookup
Enter any IPv4 or IPv6 address to see who owns it and where it lives.
Open tool - DNS Lookup
Query any DNS record type for any domain — DoH-powered, no rate limits.
Open tool - MX Records Lookup
Where does email for a domain actually go? Find out in one query.
Open tool - URL Shortener
Shorten any URL with an optional custom alias. Track clicks. Sign in to manage your links.
Open tool - Base64 Encoder & Decoder
Convert any text or binary data to and from Base64 in your browser.
Open tool
Featured calculators
- Finance🔥 Popular
Mortgage Calculator
Estimate your monthly mortgage payment with principal, interest, property tax, insurance, and HOA. Free, instant, no signup.
Open calculator - Salary & Tax
Salary Tax Calculator (US, 2025)
Estimate your US take-home pay for 2025 with federal income tax, Social Security, Medicare, state tax, and pre-tax deductions.
Open calculator - Finance
Loan Calculator
Calculate your monthly loan payment, total interest, and payoff date. Adds support for extra principal payments to see how much you can save.
Open calculator - Salary & Tax
UK Tax Calculator (2025/26)
Estimate your UK take-home pay for the 2025/26 tax year. Includes the £12,570 personal allowance, basic/higher/additional rate bands, the 100k taper, and Class 1 National Insurance.
Open calculator - Finance
US Mortgage Calculator
Estimate a US mortgage payment with US-realistic property tax, insurance, and HOA defaults. Includes principal, interest, and full amortization.
Open calculator - Salary & Tax
Canada Tax Calculator (2025, federal + CPP + EI)
Estimate Canadian federal take-home pay for the 2025 tax year. Includes the $16,129 Basic Personal Amount, five federal brackets, CPP base, CPP2, and Employment Insurance.
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Pick a category
Curated calculators that build on each other.
- Finance
Mortgage, loan, savings, ROI, inflation, compound interest, retirement, and investment calculators for everyday financial decisions.
26 tools - Salary & Tax
Estimate your take-home pay, plan around pre-tax contributions, and see how brackets affect what lands in your bank account.
103 tools - Tax
VAT, GST, sales tax, and country-specific tax calculators for businesses and consumers.
3 tools - Health
Body composition, energy expenditure, and macro planning calculators backed by published formulas.
11 tools - Crypto
Profit, fee, and tax calculators for crypto traders and long-term holders.
1 tool - Creator Economy
Earnings estimates for YouTube creators based on niche, geography, and view volume.
1 tool - Freelance
Hourly rate, utilization, and pricing calculators for freelancers and consultants.
1 tool
No tricks, no tracking
Most free tools on the web are designed to capture your email, upsell a product, or load you up with ad trackers. This site does none of that. Tools run in your browser, your inputs stay local, and everything stays free.
- 🧪 Validated math.Each calculator is tested against published reference cases.
- 📱 Built for mobile.Every tool renders cleanly on a phone screen.
- 🪟 Open about uncertainty.Assumptions are shown so you can change them.
- 🧠 Plain-English explanations.Every formula has a written breakdown.
One toolkit. Many problems solved 🚀
Pick a tool and get the answer you need. Everything is free, instant, and works without an account.