Free, Fast & Secure Online Calculators

Translate text directly into Morse code and playback via browser synthesis.

Generate bulk lists of realistic male and female first names and surnames.

Pick a random name or decide a winner fairly with our interactive spinning wheel.

Simulate rolling any polyhedral dice (d4 to d100) instantly for tabletop games.

Generate lore-accurate D&D character names for every race in 5e.

Find out your love compatibility percentage by name. A fun novelty tool that runs entirely in your browser.

Track your exact letter counts against social media limits (X, SMS, Meta).

Convert standard text into bold, italic, and cursive unicode fonts easily.

Create unique D&D realm names for elves, dwarves, and mystical characters.

Prettify, validate, and minify structured JSON data payloads easily.

Calculate JSON payload size in KB/MB and network transmission speed.

Generate bulk cryptographically secure v4 UUIDs for database primary keys.

Generate strong random passwords up to 64 characters. Uses Web Crypto API. No sign-up, runs in browser.

Generate customizable Lorem Ipsum placeholder text in paragraphs, sentences, words, HTML, or Markdown.

Calculate missing image and video dimensions, crop proportions, and aspect ratios with presets for 16:9, 4:3, 9:16, and 4K.

Break down loan schedules with full per-payment table exports.

Calculate exponential wealth growth over time with monthly contributions.

Split dinner bills perfectly and calculate gratuity percentages offline.

Calculate payment processing merchant deductions and reverse-engineer targets.

Calculate profit margin, markup percentage, cost ratio, and selling price easily for business and e-commerce.

Calculate PayPal transaction fees, net payout, and exact billing amount to invoice clients.

See how much interest you save and how many months you cut from your mortgage by making extra monthly or lump sum payments.

See exactly how much an increase in hourly or annual pay adds to your paycheck.

Convert hourly wages to annual salary or break down any salary by pay period.

Calculate regular pay, overtime pay, and total earnings for any work week.

Calculate your first or last month prorated rent by move-in or move-out date using actual days or the 30.42-day average method.

Set a minimum billable hourly rate that covers your target net income, taxes, non-billable time, and overhead expenses.

Calculate flat, tiered, or bonus-based sales commission pay for any deal size or quota structure.

Calculate partial month gross pay for a new hire, departure, or leave period using working days or calendar days.

Calculate your true daily, monthly, and annual commute cost including fuel, depreciation, tolls, and parking.

Calculate SaaS customer lifetime value, lifespan in months, and margin-adjusted LTV.

Calculate customer acquisition cost from sales, marketing, and operational expenses.

Calculate CAC payback period in months and evaluate SaaS capital efficiency.

Calculate Net Revenue Retention and Gross Revenue Retention rates for SaaS businesses.

Calculate Monthly Recurring Revenue, ARPU, and projected annual run rate.

Convert monthly subscriptions and multi-year contract values into Annual Recurring Revenue.

Find your SaaS break-even point in subscriber count and monthly revenue requirements.

Calculate gross margin percentage, gross profit, and cost of goods sold ratio.

Track fuel efficiency in MPG or L/100km and calculate your real cost per mile.

Estimate the total fuel budget for a road trip and split costs among passengers.

Add up timecard hours, convert to decimal, and estimate gross pay for any number of shifts.

Track your exact basal metabolic rate based on medical algorithms.

Split your nutrition goals perfectly into protein, fats, and carbohydrates.

Find your caloric baseline to optimize your weight loss or bulking cuts.

Find your daily calorie needs with maintenance, fat loss, and muscle gain targets.

Calculate your body mass index in seconds. Get your category, healthy weight range, and WHO thresholds.

Add, subtract, or multiply mixed fractions and see step-by-step solutions.

Track your unweighted and weighted college or high school semester GPA.

Find sample/population variance and view instant canvas histograms.

Calculate percentages, percentage change, and reverse percentages instantly.

Calculate chronological age down to precise hours and minutes lived.

Add or subtract days, weeks, and months from any starting date.

Calculate the number of business days between two dates or add/subtract business days.

Calculate the exact duration between two times or add and subtract hours and minutes. Handles overnight shifts.

Calculate how many days, hours, and minutes are left until a custom date, birthday, or upcoming holiday.

Calculate how much paint you need in gallons and liters for walls, ceilings, doors, and windows.

Calculate total floor and wall tiles required, square footage, grout line allowances, and waste percentage.

Calculate EPDM membrane square footage, adhesive gallons, seam tape, and roll count for flat roof projects.

Size a mini split air conditioner by room square footage, ceiling height, sun exposure, and occupancy count.

Calculate concrete cubic yards, cubic feet, and bag count for slabs, footings, and columns.

Calculate rebar grid spacing, total linear feet, number of bars, and weight for concrete slabs.

Calculate required mulch volume in cubic yards, cubic meters, and 2 cu ft bag counts for garden beds.

Calculate topsoil and potting soil volume in cubic yards, cubic feet, and bag counts for raised beds and gardens.