Free tools for real operating decisions
Simple, focused calculators and utilities for sales, HR, payroll, finance, SEO, and productivity. Every tool runs in your browser, needs no sign-up, and doesn't send your data anywhere.
Etsy PDF Creator
Design multi-page printables, crochet patterns, planners, and digital guides in your browser. Real templates, drag-and-drop editor, cloud auto-save, print-ready PDF export.
Sales & marketing tools
Sales Commission Calculator
Calculate commission on deals, tiered structures, and OTE splits - no spreadsheet required.
Sales ROI Calculator
Model the return on a sales hire, campaign, or tool in seconds.
Customer Lifetime Value Calculator
Estimate CLV from average order value, purchase frequency, and retention.
Conversion Rate Calculator
Calculate conversion rate, uplift percentage, and statistical significance thresholds.
UTM Link Builder
Build clean, consistent UTM-tagged campaign URLs for Google Analytics.
MRR & ARR Calculator
Turn paying customers and ARPU into monthly and annual recurring revenue with expansion.
Churn Rate Calculator
Calculate customer churn, retention, and net growth for any period.
CAC (Customer Acquisition Cost) Calculator
Calculate blended CAC from marketing and sales spend divided by new customers.
HR & payroll tools
Salary to Hourly Converter
Convert annual salary to hourly, daily, weekly, and monthly rates.
Hourly to Salary Converter
Turn an hourly rate into annual, monthly, and weekly salary equivalents.
Freelance Rate Calculator
Calculate the hourly rate freelancers need to match a target income.
PTO Accrual Calculator
Calculate paid time off accrual per pay period for hourly and salaried staff.
True Cost of Employee Calculator
Estimate the full loaded cost of an employee: salary, taxes, benefits, overhead.
Overtime Pay Calculator
Calculate regular and overtime pay with any multiplier (1.5x, 2x, custom).
Finance & business tools
Free Invoice Generator
Create a professional invoice in your browser and print or save as PDF.
Profit Margin Calculator
Calculate gross margin, markup, and net profit from cost and revenue.
Break-Even Point Calculator
Find how many units or how much revenue you need to cover costs.
Loan EMI Calculator
Calculate monthly loan payments (EMI) for any loan amount, rate, and term.
Compound Interest Calculator
See how savings grow with compound interest, plus optional monthly contributions.
VAT & GST Calculator
Add or remove VAT, GST, or sales tax at any rate.
Discount Calculator
Calculate discounted price, savings, and final total with tax.
Tip Calculator
Split a bill and add a tip - per person total in seconds.
Percentage Calculator
Three tools in one: X% of Y, X is what % of Y, and % change between two numbers.
SEO & marketing tools
Productivity tools
Time Zone Meeting Planner
Find working windows across up to 6 time zones for global team meetings.
Pomodoro Timer
Focus timer with 25-minute work blocks and 5-minute breaks, right in your browser.
Secure Password Generator
Generate strong random passwords with letters, numbers, and symbols.
Age Calculator
Calculate exact age in years, months, days, and total days from any date of birth.
BMI Calculator
Calculate Body Mass Index in metric or imperial with WHO category ranges.
Date Difference Calculator
Count days, weeks, months, and years between any two dates.
Developer utilities tools
JSON Formatter & Validator
Pretty-print, minify, and validate JSON right in your browser.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text.
HEX ↔ RGB Color Converter
Convert between HEX, RGB, and HSL color codes with a live preview.
URL Encoder / Decoder
Percent-encode or decode URLs and query string values.
Text Diff Checker
Compare two blocks of text line by line and highlight differences.
Regex Tester
Test regular expressions against text and see live match results.
UUID Generator
Generate v4 UUIDs in bulk. Copy one or all with a click.
Writing & content tools
Word & Character Counter
Count words, characters, sentences, and reading time as you type.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, and snake_case.
URL Slug Generator
Turn any title into a clean, SEO-friendly URL slug.
Lorem Ipsum Generator
Generate placeholder text - words, sentences, or paragraphs.
Reading Time Calculator
Estimate how long an article takes to read at typical adult reading speed.
Text Reverser
Reverse text by characters, words, or lines.
Duplicate Line Remover
Remove duplicate lines from any list, with case and whitespace options.
Need something built for your team?
If you use a calculator regularly and want it customized (branded, saved presets, team access), let's talk.