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Calculate your monthly mortgage payment, total interest, and full amortization schedule.

See your exact monthly payment and full month-by-month repayment schedule for any personal, auto or student loan.

Calculate investment growth with compound interest, monthly contributions and inflation adjustment.

Convert between 27 currencies with real-time ECB exchange rates. Cached in your browser for speed.

Calculate sale prices, find the original price before a discount, or determine what % off you received.

Calculate trip fuel cost, litres or gallons needed and CO2 emissions. Supports MPG and L/100km. Compare two vehicles.

Calculate the tip and split the bill fairly among any number of people.

Convert salary between any pay period instantly — annual, monthly, biweekly, weekly, daily, and hourly. Optional tax estimate.

Calculate your Body Mass Index. Metric and imperial supported. Includes gauge and WHO categories.

Find your Total Daily Energy Expenditure using the Mifflin-St Jeor formula. Get calorie targets for weight loss, maintenance or muscle gain.

Estimate your body fat percentage using the Navy Method or BMI-based formula. Metric and imperial supported.

Calculate your personal daily water goal by weight, activity level and climate. Track every drink with the built-in daily logger.

Find the best times to wake up or go to sleep based on 90-minute sleep cycles. Never wake up groggy again.

Calculate your 5 training heart rate zones by age. Supports Karvonen formula with resting HR.

Calculate running pace, finish time or distance. Supports km and miles with marathon presets.

Find the exact number of days, weeks, months and years between any two dates.

Live timer showing days, hours, minutes and seconds until any target date.

Convert Unix timestamps to dates and back. Live ticker, timezone support, seconds and milliseconds.

Live world clock for multiple cities. Convert time between any timezones instantly.

Calculate percentages, increases, decreases and ratios instantly. Three calculation modes.

Add, subtract, multiply and divide fractions instantly. Results simplified automatically with decimal and mixed number.

Calculate your grade point average instantly. Enter courses, letter grades, and credit hours on the standard 4.0 scale.

Find out exactly how old you are in years, months and days. Includes total days lived and next birthday countdown.

Generate strong random passwords with custom length, uppercase, numbers and symbols. Includes strength meter.

Create QR codes for URLs, WiFi, email and text. Customize colors and download as PNG or SVG.

Generate random UUID v4 identifiers. Generate one or many at once and copy to clipboard.

Generate placeholder text for design and layout. Choose paragraphs, sentences or words.

Pick a random number or run a full raffle draw with no duplicates. Set any min/max range.

Convert between Celsius, Fahrenheit and Kelvin in real time. Edit any field to update the others.

Convert JPG, PNG, WebP, BMP, GIF and SVG. Batch convert, resize and control quality. Free, no upload.

Length, weight, speed, volume, area and data storage — metric, imperial and binary — all in one place.

Format, validate and convert JSON, XML, YAML, CSV and HTML. Auto-detects format.

Test and debug regular expressions with live match highlighting, capture groups, and replace preview.

Encode and decode URLs (percent-encoding). Useful for APIs and web development.

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text or files. Runs entirely in your browser.

Calculate network address, subnet mask, wildcard, broadcast and usable host range from any IPv4/CIDR. Instant binary breakdown.

Convert text to UPPERCASE, camelCase, snake_case, kebab-case, Title Case and 6 more formats instantly.

Count words, characters, sentences and paragraphs. Estimates reading time and top keywords.

Compare two texts and highlight differences line by line.

Exact sunrise, sunset, solar noon, golden hour and all twilight times for any location and date. Uses NOAA solar algorithms.

Distance between two GPS coordinates in km, miles and nautical miles. Initial bearing, return bearing and midpoint included.

Convert GPS coordinates between DD, DMS, DDM, UTM and Geohash. Auto-detects input format. WGS84.

Convert colors between HEX, RGB and HSL instantly. Live preview and copy to clipboard.

Generate harmonious palettes with 6 harmony modes and fine-tune sliders. Export to HEX, CSS vars, Tailwind or PNG.

Stay focused with 25-minute work sessions and scheduled breaks. Tracks your sessions automatically.

Track your daily habits, build streaks, and see your consistency at a glance. 7-day history, no signup needed.