Amazon Seller Tools Calculators
Free browser-side utilities for Amazon sellers — listing title cleaner, search term optimizer, bullet point formatter, variation builder, and CSV column mapper.
Amazon Bullet Point Formatter
Clean formatting, normalize spacing, and structure Amazon listing bullet points with per-bullet character counts
Use calculatorAmazon Listing Title Cleaner
Clean hidden characters, duplicate words, and messy formatting from Amazon product titles
Use calculatorAmazon Search Terms Cleaner
Remove duplicates, strip punctuation, and enforce the 250-byte limit on Amazon backend search terms
Use calculatorAmazon Variation Builder
Generate every parent/child variation combination from your attributes and export as CSV
Use calculatorSupplier CSV to Amazon Column Mapper
Map supplier CSV columns to Amazon flat file fields and download the transformed output
Use calculatorBrowse Other Categories
Age & Time
Calculate your exact age, countdown to birthdays, find birth days, and explore time-based calculations.
Body & Health
Track your BMI, BMR, body fat, ideal weight, and other key health metrics with our free calculators.
Finance
Plan your retirement, calculate mortgage payments, convert salaries, and reach your savings goals faster.
Business
Profit margins, break-even analysis, markup, ROI, LTV, CPA, SaaS MRR, startup runway, and ecommerce profitability calculators.
Measurements & Conversions
Convert between temperature, weight, volume, cooking, and length units instantly.
Lifestyle & Daily Tools
Optimize your sleep, hydration, nutrition, and daily energy expenditure with science-backed calculators.
Home & DIY
Estimate paint, flooring, concrete, and wall coverage for your home improvement projects.
EMS & Medical
IV drip rate, medication dosage, weight-based dose, and pediatric reference calculators for EMT and paramedic exam prep.
YouTube Creator Tools
Revenue, monetization, growth, and workflow calculators for YouTube creators — from RPM estimators to YPP eligibility trackers.
Social Media & Influencer
Earnings estimators, rate calculators, UGC pricing, engagement benchmarks, and influencer ROI tools for creators and brands across TikTok, Instagram, and beyond.
SEO Tools
Free browser-side SEO and marketing utilities — meta tag previews, schema markup generator, robots.txt builder, UTM link builder, SERP/OG previews, and SMS segment calculator.
File Converter Tools
Free browser-side file converters — convert between JPG, PNG, WebP, AVIF, PDF, and HEIC without uploading. All processing happens locally in your browser for complete privacy.
Facebook & Meta Ads
Free Facebook and Meta Ads calculators — ROAS, break-even ROAS, profit, CPA, CPM, CPC, CTR, and conversion rate tools for advertisers.
Human Resources
Free HR calculators for payroll, PTO accrual, true employee cost, turnover cost, FTE, absenteeism, pay raises, timesheets, and workforce planning.