Every calculator you need, one clean place.
Mortgages, budgets, conversions, BMI, hashes, ROI — AI Velox Tools gives you a straight answer in seconds, with the formula shown so you can trust the number.
Type to filter every tool on this page instantly.
Flagship apps
Our two most powerful tools — full applications, still free. An account is only needed for Smart Budget (to use it at all) and optional on the Rental Calculator (to save or download reports).
Smart Budget
Upload a bank or credit card statement (PDF) and get every transaction parsed, classified, and summarized — see where your money went without manual entry or linking your bank login to anyone.
Open Smart Budget → APPRental Property Calculator
Cash flow, cap rate, and cash-on-cash return from a handful of inputs, plus a plain-English read on the deal. Includes a full guide to analyzing rentals, in English, Portuguese, and Spanish.
Run the numbers →Finance
View all →Compound Interest Calculator
Calculate how your investment grows with compound interest over time.
Loan Payment Calculator
Calculate monthly payments for any loan — car, personal, or student — with any rate and term.
ROI Calculator
Calculate Return on Investment (ROI) for any investment. Compare options and evaluate profitability instantly.
Savings Goal Calculator
Calculate how long it takes to reach a savings goal at your current monthly savings rate.
Currency Converter
Convert between currencies using any exchange rate. Useful for travel, business, and international transactions.
Simple Interest Calculator
Calculate simple interest earned or owed on any principal amount over a set time period.
Real Estate
View all →Mortgage Calculator
Calculate your monthly mortgage payment including principal and interest for any home loan.
Home Affordability Calculator
Find out how much home you can afford based on your income, debts, and down payment using lender guidelines.
Rent vs Buy Calculator
Compare the true 5-year cost of renting vs buying a home to make a smarter housing decision.
Property Tax Calculator
Estimate your annual property tax bill based on assessed home value and local tax rate.
Rental Yield Calculator
Calculate the gross and net rental yield on any investment property to evaluate cash flow potential.
Down Payment Calculator
Calculate the down payment required for any home and see how different percentages affect your loan amount.
Fitness
View all →BMI Calculator
Calculate your Body Mass Index (BMI) and see which weight category you fall into.
Calorie Calculator
Calculate your daily calorie needs based on age, weight, height, and activity level using the Mifflin-St Jeor equation.
Body Fat Percentage Calculator
Estimate your body fat percentage using the US Navy circumference method.
Ideal Weight Calculator
Calculate your ideal body weight range based on height using the Devine formula.
Running Pace Calculator
Calculate your running pace per mile from your total distance and finish time.
BMR Calculator
Calculate your Basal Metabolic Rate — the calories your body burns at complete rest — using the Mifflin-St Jeor equation.
Math
View all →Percentage Calculator
Calculate percentages instantly — find a percentage of a number, percentage increase, or what percent X is of Y.
Discount Calculator
Calculate the sale price after a discount. See exactly how much you save on any purchase.
Tip Calculator
Calculate how much to tip at a restaurant and split the bill among any number of people.
Age Calculator
Calculate your exact age in years from your birth year.
Fraction to Decimal Converter
Convert any fraction to its decimal equivalent instantly. Works for proper, improper, and mixed fractions.
Ratio Calculator
Calculate ratios, simplify them to lowest terms, or find a missing value when scaling a ratio.
Writing
View all →Word Counter
Count words, characters, sentences, and paragraphs in any text instantly.
Keyword Density Calculator
Calculate keyword density percentage for any keyword in your content to optimize for SEO.
Readability Score Calculator
Estimate the Flesch Reading Ease score for your content based on sentence count and word length.
Random Word Generator
Generate random pronounceable fake words with custom letter count. Great for placeholders and testing.
Word Frequency Counter
Analyze text and count the frequency of each word. Perfect for SEO analysis and content research.
Comma Inserter
Insert commas, semicolons, or any separator between words or at the end of each line.
Converters
View all →Miles to Kilometers Converter
Convert miles to kilometers and back. Useful for travel, running, and international distances.
Celsius to Fahrenheit Converter
Convert Celsius to Fahrenheit and back. Perfect for cooking, travel, and weather.
KG to Pounds Converter
Convert kilograms to pounds and back. Used for body weight, shipping, and recipes.
Feet to Meters Converter
Convert feet to meters and meters to feet. Useful for construction, real estate, and international travel.
Square Footage Calculator
Calculate the square footage of any rectangular or L-shaped room for flooring, painting, and real estate.
Gallons to Liters Converter
Convert US gallons to liters and liters to gallons. Useful for fuel, cooking, and international travel.
Developer
View all →Password Strength Checker
Check how strong your password is and get a score based on length and character variety.
File Size Converter
Convert file sizes between bytes, kilobytes, megabytes, gigabytes, and terabytes instantly.
Bandwidth Calculator
Calculate how long it takes to download or upload any file size at a given internet speed.
MD5 Hash Generator
Generate MD5 hash from any text, password, or string. Useful for checksums and file verification.
SHA256 Hash Generator
Generate secure SHA256 hash from any text. More secure than MD5 for modern applications.
Text to Base64 Encoder
Convert any text to Base64 encoding. Useful for encoding binary data, URLs, and emails.
Productivity
View all →Pomodoro Session Calculator
Calculate how many Pomodoro work sessions fit in your day and total deep work hours.
Meeting Cost Calculator
Calculate the true cost of a meeting based on number of attendees, average salary, and meeting duration.
Project Hourly Rate Calculator
Calculate the minimum hourly rate you need to charge as a freelancer to meet your income and expense goals.
SEO
View all →Click-Through Rate Calculator
Calculate click-through rate (CTR) for any search result, ad, or email campaign.
Open Graph Debugger & Simulator
Preview how your webpage will appear when shared on Facebook, Twitter, LinkedIn, and other platforms.
Noindex Checker
Check if a webpage has a noindex meta tag or X‑Robots‑Tag header by pasting the HTML or headers.
Meta Tag Analyser
Analyse all meta tags from a webpage's HTML head. Check for duplicates, missing descriptions, and character lengths.
Google Search Preview
Preview how your title tag, meta description, and URL will look in Google search results.
Canonical Tag Checker
Check if a webpage has a canonical URL tag and whether it matches the current page URL.
Marketing
View all →CPM Calculator
Calculate Cost Per Mille (CPM) — the cost per 1,000 impressions for any advertising campaign.
Email Open Rate Calculator
Calculate the open rate and click-to-open rate for any email marketing campaign.
Conversion Rate Calculator
Calculate the percentage of visitors who convert into leads, sign-ups, or customers.
Security
View all →Keyword Password Generator
Generate strong passwords based on a keyword you remember. Includes numbers, symbols, and case variations.
SSL Certificate Decoder
Decode and inspect SSL certificate details. Paste a PEM‑encoded certificate to view its fields.
SSL Certificate Format Converter
Convert SSL certificates between PEM, DER, and other common formats.
HTTP Security Headers Analyzer
Analyze HTTP response headers for security best practices. Paste headers from your site and see which protections are missing.
Networking
View all →Domain Extractor
Extract domain names from a block of text, URLs, or email addresses. Removes duplicates and sorts results.
IPv4 to IPv6 Converter
Convert an IPv4 address to its IPv6 representation. Supports both IPv4-mapped and 6to4 notations.
IP Subnet Calculator
Calculate IP subnet ranges, network and broadcast addresses, and usable host count from a CIDR notation.
Date & Time
View all →Countdown Timer
See exactly how much time is left until a specific date and time. Live updating countdown.
Count Up Timer
See how much time has passed since a specific date and time. Great for tracking age, anniversaries, or project durations.
World Time Clock
View current time in major cities around the world. Compare time zones instantly.
Days Between Dates Calculator
Calculate the number of days between two dates. Perfect for tracking anniversaries, project timelines, and age in days.
Add Days to Date Calculator
Add a specified number of days to any date. Useful for project deadlines, payment dates, and scheduling.
Workdays Between Dates Calculator
Calculate working days (Monday-Friday) between two dates. Excludes weekends automatically.
Creative
View all →YouTube Description Generator
Generate an SEO‑friendly YouTube video description with keywords, links, and call‑to‑action.
YouTube Channel Name Generator
Generate catchy and brandable YouTube channel name ideas from a keyword.
YouTube Video Idea Generator
Generate creative YouTube video ideas based on a topic or niche. Get titles, formats, and angle suggestions.
Newsletter Generator
Quickly generate a structured newsletter outline with subject line, greeting, body, and call‑to‑action.
Poem Generator
Generate simple rhyming poems based on a theme. Choose from different poem styles.
Lyrics Generator
Generate original song lyrics with verses, chorus, and bridge. Pick a theme and mood.