AI Token Cost Calculator
Calculate costs for GPT-4, Claude, and other LLM API usage based on token consumption. Estimate your monthly AI API expenses before committing to production.
MiniCalc Hub — Free Online Calculators & Utility Tools
MiniCalc Hub provides free, privacy-focused calculators and utility tools for business professionals, marketers, developers, and creators.
Our calculators help you make data-driven decisions without complex spreadsheets. All calculations happen locally in your browser — we never store your data.
From AI token cost estimation to freelance rate calculation, from image conversion to QR code generation — find the right tool for your needs.
Business Calculators
Freelancer Day Rate Calculator
Determine your ideal daily and hourly freelance rates based on salary goals, expenses, taxes, and billable hours.
Content ROI Estimator
Estimate return on investment for content marketing based on traffic, conversion rates, and customer value.
Ad CTR Uplift Calculator
Calculate the impact of improving click-through rates on your advertising campaigns and revenue.
Email Revenue Per Send Calculator
Calculate expected revenue per email send based on list size, open rates, and conversion metrics.
YouTube RPM Forecaster
Forecast YouTube ad revenue based on views, RPM rates, and sponsorship opportunities.
SaaS Churn Impact Calculator
Project the impact of customer churn on your SaaS monthly recurring revenue over time.
Break-Even CPC Calculator
Find your maximum profitable cost-per-click for paid advertising campaigns based on conversion rates and margins.
Podcast Ad Revenue Calculator
Estimate podcast advertising revenue based on downloads, CPM rates, and ad placements.
Affiliate Commission Forecaster
Forecast affiliate marketing revenue based on traffic, conversion rates, and commission percentages.
Utility Tools
AI Background Remover
Remove backgrounds from images instantly using AI. Perfect for product photos, portraits, and graphics.
Loan Calculator
Calculate monthly payments, total interest, and amortization schedules for any loan type.
QR Code Generator
Create customizable QR codes for URLs, text, and contact info. Download in multiple formats.
Unit Converter
Convert between units of length, weight, temperature, volume, and more with precision.
World Clock
View current time across multiple time zones. Plan international meetings easily.
Timezone Converter
Convert times between any time zones worldwide for scheduling across regions.
Receipt Tip Split
Split bills evenly with customizable tip percentages. Perfect for group dining.
Invoice to PDF
Generate professional invoices and export them as PDF documents instantly.
Image to WebP Converter
Convert images to WebP format for faster web loading while maintaining quality.
WebP to PNG Converter
Convert WebP images to PNG format for universal compatibility.
JPG to PNG Converter
Convert JPG images to PNG format with transparency support.
PNG to JPG Converter
Convert PNG images to JPG for smaller file sizes.
Image Resizer
Resize images to exact dimensions while maintaining aspect ratio and quality.
Image Compressor
Compress images to reduce file size without noticeable quality loss.
Word to PDF
Convert Word documents to PDF format while preserving formatting and layout.
PDF to Word
Convert PDF files to editable Word documents.
Text Case Converter
Transform text between uppercase, lowercase, title case, sentence case, and more.
UTM Link Builder
Create UTM-tagged URLs for tracking marketing campaigns in Google Analytics.
JSON Formatter
Format, validate, and beautify JSON data. Minify or prettify with syntax highlighting.
UUID Generator
Generate unique UUIDs (v4) in bulk with one-click copy for developers.
SEO Analyzer
Analyze any webpage for SEO issues. Check meta tags, headings, links, and more.
Core Web Vitals Checker
Check Core Web Vitals performance metrics for any URL.
Schema & AEO Checker
Validate structured data and check Answer Engine Optimization readiness.