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Top Tool
1-Rep Max Calculator
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1-Rep Max Calculator
Health & Fitness
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401(k) / Retirement Calculator
Finance
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ATS Resume Checker
Employment & HR
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Age Calculator
Math & Science
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Amortization Schedule Generator
Finance
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App Download QR Code Generator
Image Tools
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BMI Calculator
Health & Fitness
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BMR Calculator
Health & Fitness
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Base64 Encoder / Decoder
Developer & Code
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Base64 Image Encoder / Decoder
Image Tools
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50 matching tools
Estimate one-rep max from submaximal lifts using multiple strength formulas.
Project retirement balance with contributions, employer match, salary growth, and inflation-adjusted value.
Analyze your resume against real ATS systems. See exactly how Taleo, Workday, Greenhouse, Lever, and iCIMS parse your resume, get keyword optimization scores, and receive actionable recommendations.
Calculate age in years, months, days, and total days between two dates.
Generate a month-by-month amortization table with principal, interest, balance, and payoff timing.
Create a QR code that links to your app on the App Store or Google Play.
Calculate BMI using metric or imperial units, with classification and healthy range guidance.
Estimate basal metabolic rate with Mifflin, Harris-Benedict, and Katch formulas plus maintenance calorie preview.
Encode or decode text with standard or URL-safe Base64 modes.
Convert images to Base64 data URIs for embedding in HTML/CSS, or decode Base64 strings back into downloadable images. Supports PNG, JPEG, WebP, GIF, and SVG.
Generate a QR code for cryptocurrency wallet addresses with optional payment amount.
Estimate BAC with Widmark formula using sex, body weight, drinks, and elapsed time.
Estimate body fat percentage with Navy and BMI methods, plus body composition and healthy range context.
Calculate break-even units and revenue from fixed costs, variable costs, and price per unit.
Split after-tax monthly income into needs, wants, and savings targets using the 50/30/20 rule.
Build linear or radial CSS gradients with color stops and copy-ready output.
Set a fat-loss pace and calculate daily deficit, target intake, scenario plans, and a 12-week projection.
Pick any color visually or paste a value to instantly convert between HEX, RGB, HSL, and HSV. Includes WCAG contrast checker and EyeDropper support.
Project portfolio growth with recurring contributions, fees, taxes, inflation, and Buffett-style compounding tables.
Generate cron expressions from schedule inputs or break down existing expressions.
Convert amounts across major currencies using built-in fallback exchange rates.
Compare snowball and avalanche debt payoff strategies with timeline and interest savings.
Generate a QR code that opens a pre-filled email draft when scanned.
Create a QR code that adds an event to the scanner's calendar.
Generate a complete favicon package from any image — ICO, Apple Touch, Android Chrome, MS Tile, plus site.webmanifest and HTML meta tags. One-click ZIP download.
Add, subtract, multiply, divide, simplify, and compare fractions with decimal and percent context.
Create animated GIFs from a sequence of images. Drag to reorder frames, set speed and loop count, adjust quality and size. 100% private — runs in your browser.
Compute weighted GPA from course grades and credits on 4.0 or 5.0 scales.
Minify markup and code by removing comments and unnecessary whitespace.
Beautify HTML with indentation and line breaks for easier inspection and editing.
Generate hash digests with MD5, SHA family, and optional HMAC key support.
Generate five training heart-rate zones using max-HR formulas and Karvonen reserve model.
Estimate ideal body weight using Devine, Robinson, Miller, and Hamwi formulas with frame-size adjustment.
Compress JPG, PNG, and WEBP images on the server with quality and resize controls plus instant before/after analysis.
Crop images with precision using freeform selection, fixed aspect ratios, or social media presets. Rule-of-thirds grid, live dimensions, and instant download.
Convert images between PNG, JPEG, and WebP formats instantly in your browser. Supports batch conversion, quality control, and transparency handling.
Resize images to exact dimensions, percentages, or social media presets. Crop, rotate, and convert formats — all in your browser.
Rotate images by any angle, flip horizontally or vertically, and straighten photos. Batch process multiple files. 100% private — runs in your browser.
Add text or logo watermarks to your images. Supports custom fonts, opacity, rotation, tiling, and batch processing. 100% private — runs in your browser.
Convert JPG, PNG, and WebP images to a single PDF. Reorder pages, choose page size, and download — entirely in your browser.
Estimate future cost and purchasing power impact from annual inflation over time.
Convert JSON arrays to CSV and CSV back to JSON with delimiter and header controls.
Validate, pretty-print, minify, and optionally sort JSON keys for cleaner payloads and debugging.
Decode JWT header and payload claims for inspection (without signature verification).
Estimate lean body mass and fat mass using direct body-fat input or formula-based methods.
Calculate EMI, total interest, amortization schedule, prepayment impact, and flat-rate comparison.
Generate a QR code that opens a map location when scanned.
Calculate base logs, natural logs, common logs, and antilogs with change-of-base support.