Free Utility Tools
Free everyday utility tools -- unit converters, timezone converters, QR generators, Pomodoro timers, and more.
QR Code Generator
Generate QR codes for URLs, text, or contacts
Timezone Converter
Convert times across any timezone globally
Number Formatter
Format numbers with locale, currency, and precision
Universal Unit Converter
Convert length, weight, temperature, and more
Pomodoro Timer
Focus timer with work and break intervals
Bulk CSV Anonymizer
Redact PII columns from CSV files in-browser
PDF Permission Unlocker
Remove print and copy restrictions from PDFs
Loan Payoff Visualizer
Chart amortisation and compare payoff strategies
Grade-Curve Simulator
Apply curved grading and see score distributions
Tax Quick-Slip
Estimate take-home pay and effective tax rate
VAT / GST Calculator
Add or remove VAT/GST from any amount instantly
Compound Interest Calculator
Calculate investment growth with compound interest
SaaS MRR / ARR Calculator
Calculate MRR, ARR, churn impact, and ARPU for SaaS
Invoice Generator
Create professional invoices with PDF download in-browser
AI Token Counter
Count tokens for GPT-4, Claude, Gemini, Llama and more
LLM API Cost Estimator
Compare and estimate AI API costs across all major models
AI Prompt Length Checker
Check if your prompt fits within a model's context window
AI Model Context Window Reference
Searchable table of LLM context windows and pricing
Disclaimer: Free tools provided “as is” by FreeKit. No warranty or liability for any data loss, security issues, or infrastructure problems arising from use of these tools. Results are for informational purposes only. · Free Tools by FreeKit
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